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Pulsar

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18.08.2022
15:33 Phys.org Astronomers discover new accreting millisecond X-ray pulsar

Using the Neutron Star Interior Composition Explorer (NICER), an international team of astronomers have detected a new accreting millisecond X-ray pulsar. The newfound pulsar, designated MAXI J1816–195, has a spin period of about 1.89 milliseconds. The finding is reported in a paper published August 9 on the arXiv pre-print repository.

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17.08.2022
20:23 Phys.org New discovery may offer clues to 'missing' pulsars

Millisecond pulsars (MSPs) are evolved neutron stars with short spin periods that have gone through a long period of mass transfer in a low-mass X-ray binary phase. Globular clusters (GCs)—conglomerations of tens of thousands or millions of stars—are prolific environments for the formation of MSPs. However, in NGC 6397—one of two GCs closest to Earth—only one MSP had been identified until recently.

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12.08.2022
17:23 Phys.org Neutrino rocket model to explain the origin of high-velocity pulsars

The first pulsar was discovered in 1967. With an increase in pulsar observations, astronomers have found that some pulsars have a proper motion velocity greater than 1000 km/s, and the number of such pulsars is growing each year.

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28.07.2022
17:53 Phys.org Exploring the origin of 'black widow' pulsars

Ph.D. candidate GUO Yunlang and Prof. WANG Bo from the Yunnan Observatories of the Chinese Academy of Sciences investigated the formation of black widow pulsars through ultracompact X-ray binaries (UCXBs) with He star companions.

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19.07.2022
16:53 Phys.org Observing twinkling pulsars to understand mysterious interstellar plasma

Pulsars—rapidly-spinning remnants of stars that flash like a lighthouse—occasionally show extreme variations in brightness. Scientists predict that these short bursts of brightness happen because dense regions of interstellar plasma (the hot gas between stars) scatter the radio waves emitted by the pulsar. However, we still don't know where the energy sources required to form and sustain these dense plasma regions come from. To better understand these interstellar formations, we require more detailed observations of their small-scale structure, and a promising avenue for this is in the scintillation, or "twinkling," of pulsars.

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18.07.2022
16:21 NewYork Times Mattel to Reintroduce Dormant Brands Major Matt Mason, Big Jim and Pulsar

The toymaker will reintroduce three toy lines this week at Comic-Con as part of a strategy to dig deeper into its intellectual property portfolio.

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05.07.2022
16:03 Phys.org Gamma-ray pulsations detected from pulsar PSR J1835−3259B

Using NASA's Fermi space telescope, Chinese astronomers have investigated a newly discovered millisecond pulsar known as PSR J1835−3259B. As a result, they identified gamma-ray pulsations from this source. The finding is reported in a paper published June 27 on the arXiv pre-print server.

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29.06.2022
19:23 Phys.org Simultaneous single-pulse polarization observations reveal pulsar radiation behaviors

More than 50 years after the discovery of the first pulsar, the detailed physics of the emission process in a pulsar magnetosphere still remains unclear.

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24.06.2022
16:42 UniverseToday.Com Astronomers Find a Brand new Pulsar That's Probably Less Than 14 Years old

Astronomers have discovered a neutron star so young it's barely a teenager. The post Astronomers Find a Brand new Pulsar That's Probably Less Than 14 Years old appeared first on Universe Today.

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23.06.2022
23:33 Zdnet.com Pulsar Xlite V2 Mini Wireless review: This mouse made me a believer

Pulsar has quickly made a name for itself in the ultra-light gaming mouse market with its first few releases. We take a look at its smallest, lightest offering yet to see if the young company's latest mouse can live up to the hype.

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21.06.2022
17:54 World-Nuclear-News.org PULSAR project to research nuclear technology for Europe's space missions

Belgian company Tractebel will lead the PULSAR consortium conducting research on dynamic radioisotope power systems fueled by plutonium 238 for space applications - to provide spacecraft and astronauts with electricity and heat when the sun does not supply enough power.

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16.06.2022
16:53 Phys.org NASA's Chandra catches pulsar in X-ray speed trap

A young pulsar is blazing through the Milky Way at a speed of over a million miles per hour. This stellar speedster, witnessed by NASA's Chandra X-ray Observatory, is one of the fastest objects of its kind ever seen. This result teaches astronomers more about how some of the bigger stars end their lives.

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15:20 ScienceDaily.com Astronomers find evidence for most powerful pulsar in distant galaxy

Astronomers using data from the VLA Sky Survey have discovered one of the youngest known neutron stars -- possibly as young as only 14 years. The dense remnant of a supernova explosion was revealed when bright radio emission powered by the pulsar's powerful magnetic field emerged from behind a thick shell of debris from the explosion.

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11:13 Phys.org Astronomers find evidence for most powerful pulsar in distant galaxy

Astronomers analyzing data from the VLA Sky Survey (VLASS) have discovered one of the youngest known neutron stars—the superdense remnant of a massive star that exploded as a supernova. Images from the National Science Foundation's Karl G. Jansky Very Large Array (VLA) indicate that bright radio emission powered by the spinning pulsar's magnetic field has only recently emerged from behind a dense shell of debris from the supernova explosion.

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10:13 Nanowerk.com Astronomers find evidence for most powerful pulsar in distant galaxy

Astronomers have discovered one of the youngest known neutron stars - possibly as young as only 14 years. The dense remnant of a supernova explosion was revealed when bright radio emission powered by the pulsar's powerful magnetic field emerged from behind a thick shell of debris from the explosion.

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13.06.2022
14:33 Nanowerk.com Millisecond pulsars can explain the gamma-ray excess in the Milky Way center

Scientists have found that old and fast spinning neutron stars called millisecond pulsars could be responsible for an unexplained signal from the center of our Milky Way.

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07.06.2022
16:03 Phys.org New millisecond pulsar discovered by astronomers

An international team of astronomers reports the discovery of a new millisecond pulsar in the globular cluster NGC 6652. The newly found pulsar received designation PSR J1835−3259B. The study detailing the finding and disclosing fundamental parameters of this object was published May 30 on the arXiv pre-print server.

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03.06.2022
01:32 UniverseToday.Com A Pulsar has Been Found Turning so Slowly Astronomers Didn't Even Think it was Possible: Once Every 76 Seconds

Using the MeerKAT array, an international team of astronomers has detected a new class of radio-emitting neutron star! The post A Pulsar has Been Found Turning so Slowly Astronomers Didn't Even Think it was Possible: Once Every 76 Seconds appeared first on Universe Today.

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31.05.2022
04:20 NewScientist.Com ‘Zombie’ pulsar is spinning slower than should be physically possible

Most pulsars rotate once every couple of seconds, but one pulsar completes a revolution just once every 76 seconds

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24.05.2022
20:32 LiveScience.com What are pulsars?

Pulsars are the ultradense cores of gigantic stars that emit beams of radio waves in regular pulses, like cosmic lighthouses.

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12.05.2022
10:23 LiveScience.com Distant 'galaxy' isn't a galaxy at all — but one of the brightest pulsars ever detected

The pulsar PSR J0523−7125 is so bright that astronomers thought it was a distant galaxy.

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11.05.2022
21:31 Physics.Aps.org Galactic Gamma-Ray Glow May Be Pulsars After All

Author(s): Katie McCormickA new simulation of the evolution of binary stars shows that previously neglected millisecond pulsars could explain the excess gamma-ray radiation seen in our Galaxy’s center. [Physics 15, 71] Published Wed May 11, 2022

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11:20 Nature.Com Eating less beef and an extra-bright pulsar

Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more, covering all branches of science and how science impacts upon all aspects of society and life.

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10.05.2022
16:13 Phys.org Highly circularly polarized and variable pulsar detected in the Large Magellanic Cloud

An international team of astronomers reports the finding of a new pulsar in the Large Magellanic Cloud (LMC) as part of the Australian Square Kilometre Array Pathfinder (ASKAP) Variables and Slow Transients (VAST) survey. The newly detected pulsar, designated PSR J0523−7125, turns out to be a highly circularly polarized and variable radio source. The discovery was detailed in a paper published May 3 on arXiv.org.

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16:03 Phys.org Pulse-to-pulse energy distribution and longitude-resolved modulation properties of a FAST-CRAFTS pulsar

The Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the largest telescope ever built by far, has discovered more than 200 pulsars. PSR J1631+1252 is an isolated normal pulsar with a rotational period of 0.310 s discovered by the FAST in the Commensal Radio Astronomy FAST Survey (CRAFTS).

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07.05.2022
17:31 UniverseToday.Com Traveling the Solar System with Pulsar Navigation

A team of researchers at the University of Illinois Urbana-Champaign have found a way for travelers through the Solar System to work out exactly where they are, without needing help from ground-based observers on Earth. They have refined the pulsar navigation technique, which uses X-ray signals from distant pulsars, in a way similar to how … Continue reading "Traveling the Solar System with Pulsar Navigation" The post Traveling the Solar System with Pulsar Navigation appeared first on Universe Today.

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06.05.2022
06:12 UniverseToday.Com A Pulsar and Star are Orbiting Each Other Every 62 Minutes. The Fastest “Black Widow” Binary Ever Seen

The Milky Way Galaxy has its share of oddities, from black holes and magnetars to luminous blue variable stars and strange new worlds. But, have you ever heard of a “black widow binary?” Not exactly an easy name to wrap your head around, especially if you’re afraid of spiders. But, these things actually exist in … Continue reading "A Pulsar and Star are Orbiting Each Other Every 62 Minutes. The Fastest “Black Widow” Binary Ever Seen" The post A Pulsar and Star are Orbiting Each Other Every 62 Minutes. The Fastest “Black Widow” Binary Ever Seen appeared first on Universe Today.

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05.05.2022
17:20 SingularityHub.Com Astronomers Discovered the Brightest Radio Pulsar Outside Our Galaxy

When a star explodes and dies in a supernova, it takes on a new life of sorts. Pulsars are the extremely rapidly rotating objects left over after massive stars have exhausted their fuel supply. They are extremely dense, with a mass similar to the sun crammed into a region the size of a large city. […]

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15:53 Phys.org Researchers investigate 'the Goose' pulsar wind nebula

Using NASA's Chandra X-ray observatory and Australia Telescope Compact Array (ATCA), astronomers have investigated a pulsar wind nebula, dubbed "the Goose," powered by a young pulsar known as PSR J1016–5857. Results of the study, published April 27 on the arXiv pre-print server, deliver important insights into the nature of this nebula.

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04.05.2022
22:00 ScientificAmerican.Com A Galaxy Is Unmasked as a Pulsar — the Brightest outside the Milky Way

Using a technique to block certain wavelengths of light, researchers hope to discover many more hidden pulsars -- Read more on ScientificAmerican.com

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12:03 Technology.org Pulsars Could Explain the Excess of Gamma Radiation Coming from the Center of the Milky Way

Ever hear of the Galactic Center GeV Excess? No, it’s not a cosmic rock band, although that’s a

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03.05.2022
22:51 UniverseToday.Com Pulsars Could Explain the Excess of Gamma Radiation Coming from the Center of the Milky Way

Ever hear of the Galactic Center GeV Excess? No, it’s not a cosmic rock band, although that’s a great name for one. Actually, it’s what astronomers call a super-high rate of gamma-ray radiation coming from the heart of our Milky Way Galaxy. Since this Galactic Center Excess was first detected in 2009, people thought it … Continue reading "Pulsars Could Explain the Excess of Gamma Radiation Coming from the Center of the Milky Way" The post Pulsars Could Explain the Excess of Gamma Radiation Coming from the Center of the Milky Way appeared first on Universe Today.

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16:30 Nature.Com A ‘galaxy’ is unmasked as a pulsar — the brightest outside the Milky Way

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02.05.2022
23:53 Phys.org Telescope dons 'sunglasses' to find brightest-ever pulsar

An international research team, including scientists at Australia's national science agency, CSIRO, has used a new observation technique to discover the brightest extragalactic pulsar known, and it could even be the most luminous one ever found.

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28.04.2022
19:30 NewScientist.Com Mysterious gamma rays at centre of Milky Way could be from pulsars

A glow of gamma rays from within our galaxy has long puzzled astronomers, but now it seems they could be produced by a specific type of millisecond pulsar

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25.04.2022
16:03 Phys.org New double neutron star millisecond pulsar discovered

An international team of astronomers reports the discovery of a rare double neutron star millisecond pulsar. The newfound binary pulsar, designated PSR J1325−6253, consists of two neutron stars orbiting one another every 1.8 days. The finding is detailed in a paper published April 14 on arXiv.org.

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12.04.2022
16:32 Phys.org Two millisecond pulsars detected in globular cluster NGC 6440

Using the MeerKAT radio telescope, an international team of astronomers has investigated a globular cluster known as NGC 6440. In result, two new millisecond pulsars have been detected in this cluster, which received designations NGC 6440G and NGC 6440H. The discovery was presented in a paper published April 1 on the arXiv pre-print server.

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30.03.2022
20:42 Phys.org Researchers explain formation of millisecond pulsars with long orbital periods

A research team led by Prof. Wang Bo from Yunnan Observatories of the Chinese Academy of Sciences has explained the formation of millisecond pulsars (MSPs) with long orbital periods by accretion-induced collapse of white dwarfs.

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15:43 Phys.org Thirteen new pulsars discovered with MeerKAT

Using the MeerKAT radio telescope, an international team of astronomers has detected 13 new pulsars in the globular cluster NGC 1851. Twelve of them turned out to be millisecond pulsars (MSPs). The discovery was reported March 23 on the arXiv pre-print server.

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28.03.2022
17:12 Phys.org Quasi-periodic oscillations detected in pulsar LMC X-4

Using ESA's XMM-Newton telescope, Indian astronomers have performed X-ray observations of a binary X-ray pulsar known as LMC X-4. The observational campaign resulted in the detection of quasi-periodic oscillations (QPOs) in this source. The finding is reported in a paper published March 15 on arXiv.org.

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24.03.2022
16:40 Phys.org Recently discovered periodic radio transient may be a rare white dwarf pulsar, study finds

A new study by Jonathan Katz of Washington University in St. Louis suggests that a recently discovered periodic radio transient source, designated GLEAM-X J162759.5−523504.3, may be a rare white dwarf pulsar. The finding was detailed in a paper published March 16 on the arXiv pre-print server.

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21.03.2022
16:04 Phys.org Study investigates behavior of the 'black widow' millisecond pulsar PSR J0610−2100

Astronomers have performed a comprehensive study of a peculiar "black widow" millisecond pulsar known as PSR J0610−2100. Results of this research, published March 11 on the arXiv pre-print repository, deliver essential information regarding the behavior and properties of this source.

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09.03.2022
19:08 Phys.org Study sheds more light on the nature of millisecond pulsar PSR J0955−6150

An international team of astronomers has performed timing observations of an eccentric millisecond pulsar known as PSR J0955−6150. Results of the observational campaign, published March 1 on the arXiv pre-print server, deliver important insights into the nature of this object.

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07.03.2022
16:05 Phys.org Astronomers scan 800 pulsars to see if any of them have planets

Astronomers discovered the first exoplanets in 1992. They found a pair of them orbiting the pulsar PSR B1257+12 about 2,300 light-years from the Sun. Two years later they discovered the third planet in the system.

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22.02.2022
20:58 Aps.org Editors' Suggestions High-precision search for dark photon dark matter with the Parkes Pulsar Timing Array

Author(s): Xiao Xue, Zi-Qing Xia, Xingjiang Zhu, Yue Zhao, Jing Shu, Qiang Yuan, N. D. Ramesh Bhat, Andrew D. Cameron, Shi Dai, Yi Feng, Boris Goncharov, George Hobbs, Eric Howard, Richard N. Manchester, Aditya Parthasarathy, Daniel J. Reardon, Christopher J. Russell, Ryan M. Shannon, Renée Spiewak, Nithyanandan Thyagarajan, Jingbo Wang, Lei Zhang, and Songbo Zhang (PPTA Collaboration)The authors analyze the data from the Parkes pulsar timing array to study the onset of ultralight spin-one dark photon dark matter. [Phys. Rev. Research 4, L012022] Published Tue Feb 22, 2022

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17:42 Phys.org Research investigates evolution of a peculiar slowly-spinning pulsar

Turkish astronomers have inspected GLEAM-XJ162759.5–523504.3—a recently discovered pulsar with a relatively long spin period. Results of the study, published February 14 on the arXiv pre-print repository, deliver important information regarding the evolution of this peculiar object.

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17.02.2022
18:20 Phys.org New 'black widow' millisecond pulsar discovered

An international team of astronomers reports the detection of a new millisecond pulsar (MSP) using the Green Bank Telescope (GBT). The newfound pulsar, designated PSR J1555−2908, turns out to be one of the so-called "black widow" MSPs. The finding is detailed in a paper published February 10 on arXiv.org.

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25.01.2022
18:33 Phys.org Unusual emission from pulsar PSR B1859+07 examined with FAST

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), Chinese astronomers have investigated a peculiar emission phenomena exhibited by a pulsar known as PSR B1859+07. Results of the study, published January 18 on the arXiv pre-print repository, could shed light on abnormal emission modes observed in some pulsars.

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03.01.2022
17:57 Phys.org Video: How to kick a pulsar out of the galaxy

Pulsars are neutron stars. They are formed when an old star explodes as a supernova, so you would expect to find them in the center of its supernova remnant. But not always. Astronomers have learned that some pulsars are ejected from its remnant. The Very Large Array has discovered one pulsar that is quite a kick.

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30.12.2021
16:28 Phys.org Plasma lensing discovered in black widow pulsar

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Dr. Wang Shuangqiang from the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences discovered plasma lensing phenomenon in a black widow pulsar PSR J1720-0533.

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15.12.2021
20:04 Physics.Aps.org Synopsis: Pulsars Probe Early Universe

Author(s): Michael SchirberAstronomical observations of pulsars have provided new information about a possible phase transition in the early Universe. [Physics 14, s160] Published Wed Dec 15, 2021

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19:03 Aps.org Editors' Suggestions Constraining Cosmological Phase Transitions with the Parkes Pulsar Timing Array

Author(s): Xiao Xue, Ligong Bian, Jing Shu, Qiang Yuan, Xingjiang Zhu, N. D. Ramesh Bhat, Shi Dai, Yi Feng, Boris Goncharov, George Hobbs, Eric Howard, Richard N. Manchester, Christopher J. Russell, Daniel J. Reardon, Ryan M. Shannon, Renée Spiewak, Nithyanandan Thyagarajan, and Jingbo WangAstronomical observations of pulsars have provided new information about a possible phase transition in the early Universe. [Phys. Rev. Lett. 127, 251303] Published Wed Dec 15, 2021

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13.12.2021
21:45 NewScientist.Com A pair of pulsars in a tight embrace have proved Einstein right again

After monitoring a pair of pulsars in tight orbit around one another for 16 years, astronomers conclude that their behaviour is consistent with Einstein’s predictions

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20:02 Physics.Aps.org Viewpoint: General Relativity Withstands Double Pulsar’s Scrutiny  

Author(s): Lijing ShaoSixteen years of timing data from the double pulsar confirm the validity of Einstein’s theory of general relativity to a new level. [Physics 14, 173] Published Mon Dec 13, 2021

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20:00 Aps.org Editors' Suggestions Strong-Field Gravity Tests with the Double Pulsar

Author(s): M. Kramer et al.Sixteen years of timing data from the double pulsar confirm the validity of Einstein’s theory of general relativity to a new level. [Phys. Rev. X 11, 041050] Published Mon Dec 13, 2021

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09.12.2021
18:40 Phys.org Mode changing phenomenon detected in the millisecond pulsar J1909−3744

Using the MeerKAT telescope, astronomers have conducted radio observations of a millisecond pulsar known as J1909−3744. The study found that J1909−3744 experiences the so-called mode changing, which makes it only the third known millisecond pulsar that exhibits such behavior. The finding was detailed in a paper published December 2 on the arXiv pre-print server.

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10.11.2021
21:29 Phys.org Unraveling the eclipses of millisecond pulsars in a compact binary

A group of scientists working at the National Centre for Radio Astrophysics (NCRA), Pune have for the first time unraveled the eclipse mechanisms for the millisecond pulsars in compact binary systems using the upgraded Giant Metrewave Radio Telescope (uGMRT). Eclipses in millisecond pulsars have been known since the 1980's, but the exact cause of these eclipses have not been understood till now. Devojyoti Kansabanik a Ph.D. student at NCRA is the lead author of the paper describing this work, which was done under the guidance of Dr. Bhaswati Bhattacharyya, also at NCRA. Dr. Jayanta Roy of NCRA and Prof. Benjamin Stappers from the Jodrell Bank Centre for Astrophysics, The University of Manchester are the other authors.

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19:46 Phys.org Research sheds more light on the properties of the ultra-luminous X-ray pulsar NGC 7793 P13

Using data from various spacecraft, astronomers have investigated an ultra-luminous X-ray pulsar known as NGC 7793 P13. The new study, published November 1 on the arXiv pre-print server, yields essential information regarding timing and spectral properties of this source.

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19.10.2021
16:16 Phys.org X-ray Pulsar XTE J1946+274 investigated with NuSTAR

Using NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) spacecraft, Russian astronomers have investigated a transient X-ray pulsar known as XTE J1946+274. Results of the study, presented in a paper published October 11 on arXiv.org, provide more insights into the nature of this object.

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29.09.2021
11:39 Nanowerk.com Are pulsars the source of galactic cosmic rays?

A new project is investigating the role pulsars play in creating galactic, high-energy cosmic rays.

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21.09.2021
16:12 Phys.org 'Black widow' pulsar detected in globular cluster NGC 6712

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), astronomers have discovered a new pulsar in the globular cluster NGC 6712. The newly found object is a so-called "black widow," and the first radio pulsar identified so far in this cluster. The finding is detailed in a paper published September 14 on arXiv.org.

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00:09 Washingtonpost Speaking-of-science Antony Hewish, astronomer who won Nobel Prize for the discovery of pulsars, dies at 97

The discovery was a scientific breakthrough, although his Nobel was controversial. Some said at least a share of the prize should have gone to one of his graduate students.

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17.09.2021
22:35 NYT Science Antony Hewish, Astronomer Honored for the Discovery of Pulsars, Dies at 97

He received a Nobel Prize for his finding. Some criticized the prize because it was a graduate student in his lab who had first detected the signals.

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13.09.2021
15:41 Phys.org Pulsar timing arrays take us closer to figuring out supermassive black holes

Galaxies host supermassive black holes, which weigh millions to billions times more than the sun. When galaxies collide, pairs of supermassive black holes at their centers also lie on the collision course. It may take millions of years before two black holes slam into each other. When the distance between them is small enough, the black hole binary starts to produce ripples in space-time, which are called gravitational waves.

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09.09.2021
17:43 Phys.org Pulsar PSR J0250+5854 investigated by researchers

Using ground-based facilities, an international team of astronomers has conducted a broadband radio study of a slowly rotating radio pulsar known as PSR J0250+5854. Results of this investigation, published September 1 on the arXiv pre-print server, provide more insights into the nature of this source.

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01.09.2021
17:11 Phys.org Research inspects the emission from millisecond pulsar PSR J0218+4232

By analyzing the data from NASA's Fermi spacecraft and Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope, an international team of astronomers has investigated a millisecond pulsar known as PSR J0218+4232. Results of the study, published August 25 on arXiv.org, shed more light on the emission from this source.

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22.08.2021
17:40 ScienceDaily.com PULSAR-integrated radiotherapy with immunotherapy for improved tumor control

Cancer physicians are pioneering a new PULSAR radiation-therapy strategy that improves tumor control compared with traditional daily therapy.

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20.07.2021
16:11 Phys.org New X-ray pulsar discovered

Using ART-XC and eROSITA telescopes onboard the Spectrum Roentgen Gamma (SRG) mission, an international team of astronomers has detected a new pulsar. The newly found object, designated SRGA J204318.2+443815, turns out to be a long-period, faint X-ray pulsar in a distant binary system. The finding is reported in a paper published July 12 on arXiv.org.

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14.07.2021
16:00 Phys.org Outburst of Cepheus X-4 pulsar inspected with AstroSat

Using the AstroSat spacecraft, Indian astronomers have observed the Cepheus X-4 X-ray pulsar during its outburst in 2018. Results of these observations provide important insights into the properties of this outburst and shed more light on the nature of the pulsar. The study was presented in a paper published July 8 on arXiv.org.

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21.06.2021
16:24 Phys.org Astronomers inspect the formation of millisecond pulsar PSR J1946+3417

A team of Chinese astronomers has conducted a study aimed at inspecting formation scenarios for the millisecond pulsar PSR J1946+3417. They found that the pulsar was most likely formed as a result of a phase transition. The research was published June 10 on the arXiv pre-print server.

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16.06.2021
18:54 Physics.Aps.org Synopsis: Pulsar Halo Hints at Slow Diffusion of Cosmic Rays  

Author(s): Marric StephensObservations made by the LHAASO gamma-ray observatory show huge differences in the rate at which charged particles propagate through the Milky Way. [Physics 14, s77] Published Wed Jun 16, 2021

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25.05.2021
16:08 Phys.org New energetic pulsar discovered in the Small Magellanic Cloud

Using ESA's XMM-Newton spacecraft, an international team of astronomers has detected a new energetic rotation-powered pulsar in the Small Magellanic Cloud (SMC). The newly found pulsar, designated PSR J0058–7218, appears to be the most energetic pulsar so far discovered in the SMC. The finding is detailed in a paper published May 17 on arXiv.org.

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24.05.2021
15:58 Phys.org Observations shed more light on the properties of pulsar PSR J0740+6620

An international team of astronomers has carried out X-ray observations of a massive millisecond pulsar known as PSR J0740+6620. Results of the observational campaign, presented in a paper published May 14 on the arXiv pre-print repository, deliver important information regarding the properties of this pulsar.

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20.05.2021
16:12 Phys.org New FAST discoveries shed light on pulsars

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Prof. Han Jinlin from National Astronomical Observatories of Chinese Academy of Sciences (NAOC) has discovered 201 pulsars, including many very faint pulsars, 40 millisecond pulsars (MSPs), and 16 pulsars in binaries.

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19.05.2021
15:42 SeekingAlpha.com Acceleron's sotatercept shows potential to treat pulmonary arterial hypertension in mid-stage Pulsar trial

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06.05.2021
19:39 Phys.org FAST detects 3D spin-velocity alignment in a pulsar

Pulsars—another name for fast-spinning neutron stars—originate from the imploded cores of massive dying stars through supernova explosion.

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04.05.2021
16:23 LiveScience.com 8 extremely rare 'millisecond pulsars' discovered inside globular clusters

Scientists using South Africa's MeerKAT radio telescope have detected 8 new millisecond pulsars in the hearts of globular clusters.

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29.04.2021
11:06 Technology.org Radio astronomers discover 8 new millisecond pulsars

A group of astronomers has discovered 8-millisecond pulsars located within the dense clusters of stars, known as “globular

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28.04.2021
15:31 Phys.org Radio astronomers discover 8 new millisecond pulsars

A group of astronomers has discovered eight millisecond pulsars located within the dense clusters of stars, known as "globular clusters," using South Africa's MeerKAT radio telescope.

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22.04.2021
15:33 Phys.org Ultra-high-energy gamma rays originate from pulsar nebulae

The discovery that the nebulae surrounding the most powerful pulsars are pumping out ultra-high-energy gamma rays could rewrite the book about the rays' galactic origins. Pulsars are rapidly rotating, highly magnetized collapsed stars surrounded by nebulae powered by winds generated inside the pulsars.

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17.04.2021
04:10 ScienceDaily.com On the pulse of pulsars and polar light

Faced with the tragic loss of the Arecibo observatory in Puerto Rico and the often prohibitive cost of satellite missions, astronomers are searching for savvy alternatives to continue answering fundamental questions in physics.

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00:09 Phys.org On the pulse of pulsars and polar light

Faced with the tragic loss of the Arecibo observatory in Puerto Rico and the often prohibitive cost of satellite missions, astronomers are searching for savvy alternatives to continue answering fundamental questions in physics.

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09.04.2021
14:57 Technology.org NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts

A global science collaboration using data from NASA’s Neutron star Interior Composition Explorer (NICER) telescope on the International Space Station has discovered X-ray

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01:08 ScienceDaily.com NASA's NICER finds X-ray boosts in the Crab Pulsar's radio bursts

A global science collaboration using data from NASA's Neutron star Interior Composition Explorer (NICER) telescope on the International Space Station has discovered X-ray surges accompanying radio bursts from the pulsar in the Crab Nebula. The finding shows that these bursts, called giant radio pulses, release far more energy than previously suspected.

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08.04.2021
23:27 ScienceDaily.com Giant radio pulses from pulsars are hundreds of times more energetic than previously believed

Scientists using coordinated observations of the Crab pulsar in a number of frequencies, have discovered that the 'giant radio pulses' which it emits include an increase in x-ray emissions in addition to the radio and visible light emissions that had been previously observed. This finding, published in Science, implies that these pulses are hundreds of times more energetic than previously believed.

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22:57 Nanowerk.com Giant radio pulses from pulsars are hundreds of times more energetic than previously believed

Scientists, using coordinated observations of the Crab pulsar in a number of frequencies, have discovered that the 'giant radio pulses' which it emits include an increase in x-ray emissions in addition to the radio and visible light emissions that had been previously observed.

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21:04 Phys.org Giant radio pulses from pulsars are hundreds of times more energetic than previously believed

A group led by scientists from the RIKEN Cluster for Pioneering Research, using coordinated observations of the Crab pulsar in a number of frequencies, have discovered that the "giant radio pulses" which it emits include an increase in X-ray emissions in addition to the radio and visible light emissions that had been previously observed. This finding, published in Science, implies that these pulses are hundreds of times more energetic than previously believed and could provide insights into the mysterious phenomenon of "fast radio bursts (FRBs)." Giant radio pulses—a phenomenon where extremely short, millisecond-duration pulses of radio waves are emitted—have been observed in association with a dozen pulsars in our galaxy, but little is known about the mechanism that causes them. It has been proposed that they may also be the origin of "fast radio bursts"—rapid bursts of radio waves that are believed to originate from energetic events in the extragalactic universe. To gain insights

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31.03.2021
15:56 Phys.org Indian astronomers probe X-ray pulsar 2S 1417–624

Using the Neutron Star Interior Composition Explorer (NICER) instrument aboard the International Space Station (ISS) and NASA's Swift spacecraft, astronomers from India have investigated an X-ray pulsar known as 2S 1417–624. Results of the study, published March 24 on arXiv.org, provide important information about the evolution of different timing and spectral properties of this source during its recent outburst.

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17.03.2021
16:09 Phys.org Eight new millisecond pulsars discovered by MeerKAT

Using the MeerKAT radio telescope array, an international team of astronomers has detected eight new millisecond pulsars. The newfound objects are located in six globular clusters. The finding is reported in a paper published March 8 on the arXiv pre-print repository.

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02.03.2021
17:38 Phys.org Theoretical interpretations of the pulsar timing data recently released by NANOGrav

The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is a gravitational-wave detector that monitors areas in the vicinity of Earth using a network of pulsars (i.e., clock-like stars). At the end of 2020, the NANOGrav collaboration gathered evidence of fluctuations in the timing data of 45 pulsars, which could be compatible with a stochastic gravitational wave background (SGWB) signal at nanohertz frequencies.

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23.02.2021
17:12 Phys.org Ultraluminous X-ray pulsar M51 ULX-7 inspected by researchers

Using NASA's Swift and Chandra space observatories, astronomers have investigated an ultraluminous X-ray pulsar known as M51 ULX-7. The study, detailed in a paper published February 16 on the arXiv pre-print server, sheds more light on the X-ray variability of this source.

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28.01.2021
20:04 Physics.Aps.org Research News: Cosmic Ringtones in Pulsar Data?

Author(s): Michael SchirberA pulsar survey has detected a potential signal from low-frequency gravitational waves, which theorists are eager to explain. [Physics 14, 15] Published Thu Jan 28, 2021

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18:55 Aps.org Editors' Suggestions Cosmic String Interpretation of NANOGrav Pulsar Timing Data

Author(s): John Ellis and Marek LewickiPulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The poss... [Phys. Rev. Lett. 126, 041304] Published Thu Jan 28, 2021

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27.01.2021
17:06 Phys.org Astronomers discover new candidate redback millisecond pulsar

Astronomers report the finding of a new candidate redback millisecond pulsar (MSP) binary associated with a gamma-ray source known as 4FGL J0940.3–7610. The newly found object is a short-period compact binary exhibiting X-ray emission that consists of a low-mass neutron star and a companion star with a mass most likely over 0.4 solar masses. The discovery is detailed in a paper published January 21 on the arXiv pre-print server.

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26.01.2021
17:01 Phys.org Study sheds more light on the properties of the X-ray pulsar XTE J1858+034

Using NASA's Nuclear Spectroscopic Telescope Array (NuSTAR), an international team of astronomers has conducted X-ray observations of an accreting X-ray pulsar known as XTE J1858+034. Results of the study, presented in a paper published January 18 on the arXiv pre-print server, provide more insights into the properties of this source.

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14.01.2021
16:40 Nature.Com Daily briefing: Pulsars hint at sea of gravitational waves

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13:27 Technology.org Astronomers can use Pulsars to Measure Tiny Changes of Acceleration Within the Milky Way, Scanning Internally for Dark Matter and Dark Energy

As our Sun moves along its orbit in the Milky Way, it is gravitationally tugged by nearby stars,

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11.01.2021
22:44 ScienceDaily.com Measurements of pulsar acceleration reveal Milky Way's dark side

It is well known that the expansion of the universe is accelerating due to a mysterious dark energy. Within galaxies, stars also experience an acceleration, though this is due to some combination of dark matter and the stellar density. In a new study, researchers have now obtained the first direct measurement of the average acceleration taking place within our home galaxy, the Milky Way.

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20:53 Phys.org Measurements of pulsar acceleration reveal Milky Way's dark side

It is well known that the expansion of the universe is accelerating due to a mysterious dark energy. Within galaxies, stars also experience an acceleration, though this is due to some combination of dark matter and the stellar density. In a new study to be published in Astrophysical Journal Letters researchers have now obtained the first direct measurement of the average acceleration taking place within our home galaxy, the Milky Way. Led by Sukanya Chakrabarti at the Institute for Advanced Study with collaborators from Rochester Institute of Technology, University of Rochester, and University of Wisconsin-Milwaukee, the team used pulsar data to clock the radial and vertical accelerations of stars within and outside of the galactic plane. Based on these new high-precision measurements and the known amount of visible matter in the galaxy, researchers were then able to calculate the Milky Way's dark matter density without making the usual assumption that the galaxy is in a steady-state.

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16:51 Phys.org Eight binary millisecond pulsars examined by researchers

Using the Arecibo 305-m radio telescope, an international team of astronomers has investigated eight binary millisecond pulsars (MSPs). Results of this study, presented in a paper published December 30 on the arXiv pre-print server, provide important information about the properties of these sources.

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