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Quasars

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25.04.2019
16:55 Phys.orgAstronomers find quasars are not nailed to the sky

Until recently, quasars were thought to have essentially fixed positions in the sky. While near-Earth objects move along complex trajectories, quasars are so remote that they were believed to offer stable and reliable reference points for use in navigation and plate tectonics research. Now, an international team of astrophysicists featuring researchers from the Moscow Institute of Physics and Technology has found that quasars are not entirely motionless and explained this behavior. The findings were published in the Monthly Notices of the Royal Astronomical Society.

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03.04.2019
16:11 Phys.orgGiant molecular outflow detected from the quasar PDS 456

Using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, astronomers have detected a galaxy-wide molecular outflow from the quasar PDS 456. The findings are presented in a paper published March 25 on arXiv.org, in which the authors investigate the properties of this outflow.

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20.03.2019
01:07 DiscoverMagazine.comA Quasar-Powered Storm Pours From the Teacup Galaxy

Your nighttime cup of chamomile might help you go to sleep, but this turbulent teacup is far from soothing. Sitting inside a galaxy known as the “Teacup,” nicknamed after its distinct silhouette, lies a storm that’s causing quite the stir. Powered by a supermassive black hole, astronomers thought the commotion inside this distant galaxy was rapidly dying down, but recent data published in the Astrophysical Journal says otherwise. The uproar is happening within the bright mass at the ce

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19.03.2019
16:49 Phys.orgEnergy loss gives unexpected insights in evolution of quasar

An international team of astrophysicists observed for the first time that the jet of a quasar is less powerful on long radio wavelengths than earlier predicted. This discovery gives new insights in the evolution of quasar jets. They made this observation using the international Low Frequency Array (LOFAR) telescope, which produced high-resolution radio images of quasar 4C+19.44, located over 5 billion light-years from Earth.

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14.03.2019
14:56 Phys.orgQuasar jets confuse orbital telescope

Astrophysicists from the Moscow Institute of Physics and Technology, the Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS), and NASA have found an error in the coordinates of active galactic nuclei measured by the Gaia space telescope, and helped correct it. The findings, published in The Astrophysical Journal, also serve as an independent confirmation of the astrophysical model of these objects.

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23.01.2019
00:56 Phys.orgAstronomers use split images of quasars to produce a new estimate of the Hubble constant

The question of how quickly the universe is expanding has been bugging astronomers for almost a century. Different studies keep coming up with different answers—which has some researchers wondering if they've overlooked a key mechanism in the machinery that drives the cosmos.

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14.01.2019
06:30 Gizmag Brightest quasar ever found shines with the intensity of 600 trillion Suns


From our point of view here on Earth, the brightest object in the sky is unquestionably the Sun. But this unremarkable star is a mere 10-watt bulb compared to quasars, extremely luminous galactic cores that shine so intensely thanks to their ravenous hunger for nearby material. Now, astronomers have detected the brightest quasar ever found, shining with the light of almost 600 trillion Suns.
.. Continue Reading Brightest quasar ever found shines with the intensity of 600 trillion Suns Category: Space Tags: Astronomy Galaxy Gravitational lensing Hubble Quasar University of Arizona WISE

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13.01.2019
23:35 DigitalTrends.comBrightest quasar ever seen discovered by Hubble, may be star-producing machine

The brightest quasar even seen has been observed with the Hubble Space Telescope using a technique called strong gravitational lensing. The quasar is enormously energetic and may be producing thousands of stars per year.
The post Brightest quasar ever seen discovered by Hubble, may be star-producing machine appeared first on Digital Trends.

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11.01.2019
16:27 FoxNews.comUltrabright quasar lit up the early universe

Astronomers have just discovered a galaxy with a supermassive black hole at its core, and it's located over 12.8 billion light-years away from Earth, just a billion years shy of the Big Bang.

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13:52 Technology.orgAstronomers uncover the brightest quasar in the early universe

Researchers have discovered the brightest quasar yet known, detected from the period when the universe’s star-making hydrogen gas

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10.01.2019
19:42 Yahoo ScienceUltrabright Quasar Lit Up the Early Universe

Astronomers have just discovered a galaxy with a supermassive black hole at its core, and it's located over 12.8 billion light-years away from Earth, just a billion years shy of the Big Bang. Known as a quasar, this object is the brightest of its kind ever seen in the distant universe. The discovery gives scientists a better look at the universe's early years and helps them understand how supermassive black holes form and evolve. The newfound quasar, dubbed UHS J043947.08+163415.7, was discovered by taking advantage of gravitational lensing, a phenomenon in which a distant object's light is magnified by the gravity of a closer object. The intervening, or lensing, galaxy in this case makes the quasar appear 50 times brighter than it would otherwise. [Big Bang to Civilization: 10 Amazing Origin Events] "The reason this

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01:39 LiveScience.comUltrabright Quasar Lit Up the Early Universe

Astronomers just found a galaxy with a glowing heart that is almost as old as the universe itself.

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18.12.2018
17:15 Phys.orgNew bright high-redshift quasar discovered using VISTA

Using the Visible and Infrared Survey Telescope for Astronomy (VISTA), astronomers have detected a new bright quasar at a redshift of about 6.8. The newly identified quasar, designated VHS J0411-0907, is the brightest object in the near-infrared J-band among the known quasars at redshift higher than 6.7. The finding is reported in a paper published December 6 on arXiv.org.

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30.11.2018
00:00 ScienceMag.orgBlazing quasars reveal the universe hit ‘peak star birth’ 3 billion to 4 billion years after the big bang

Gamma rays from “blazars” set a new timeline for star formation

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28.11.2018
21:12 Nature.ComSpatially resolved rotation of the broad-line region of a quasar at sub-parsec scale

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21:12 Nature.ComA glimpse into the heart of a quasar

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21.11.2018
20:03 ScientificAmerican.ComPhotons, Quasars and the Possibility of Free Will

Flickers of light from the edge of the cosmos help physicists advance the idea that the future is not predetermined -- Read more on ScientificAmerican.com

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19.11.2018
16:48 Phys.orgGravitationally lensed quasars

The path of light is bent by mass, an effect predicted by Einstein's theory of gravity, and when a massive galaxy or cluster lies along our line-of-sight to a more distant galaxy its matter will act as a lens to image the light from that object. So-called strong gravitational lensing creates highly distorted, magnified and often multiple images of a single source. (Strong lensing is distinct from weak lensing which results in modestly deformed shapes of background galaxies.)

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06.11.2018
17:20 Phys.orgAstronomers discover new luminous high-redshift quasar

An international team of astronomers has detected a new luminous quasar at a redshift of 7.02. The newly found quasi-stellar object (QSO), designated DELS J003836.10–152723.6, is the most luminous quasar known at a redshift of over 7.0. The discovery is reported in a paper published October 29 on the arXiv pre-print repository.

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30.10.2018
16:17 Phys.orgTwo high-redshift quasars discovered using OGLE

Astronomers report the finding of two new high-redshift quasars using imagery from the Optical Gravitational Lensing Experiment (OGLE). The newly found quasars, designated OGLE J015531−752807 and OGLE J005907−645016, have redshifts of 5.09 and 4.98 respectively. The discovery is detailed in a paper published October 19 on arXiv.org.

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22.08.2018
14:12 LiveScience.comAncient Quasars Provide Incredible Evidence for Quantum Entanglement

Using two ancient galactic cores called quasars, researchers have taken a massive step forward toward confirming quantum entanglement — a concept that says particles can be linked no matter how far apart in the universe they may be.

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09:52 Technology.orgLight from ancient quasars helps confirm quantum entanglement

Last year, physicists at MIT, the University of Vienna, and elsewhere provided strong support for quantum entanglement, the

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21.08.2018
10:56 Nanowerk.comLight from ancient quasars helps confirm quantum entanglement

Results are among the strongest evidence yet for 'spooky action at a distance'.

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10:35 Gizmag Quasars may prove quantum entanglement – or a 12 billion-year-old conspiracy


Quantum entanglement – the idea that two particles can become inextricably linked across vast distances – is an eerie concept that Einstein himself had trouble accepting, and yet over the past few decades it's been experimentally demonstrated time and time again. But are there other variables interfering that we simply don't understand yet? To find out, MIT researchers have now performed an experiment that provides the strongest evidence so far of either quantum entanglement – or a "conspiracy" that dates back over 12 billion years.
.. Continue Reading Quasars may prove quantum entanglement – or a 12 billion-year-old conspiracy Category: Physics Tags: Albert Einstein Entanglement Light MIT Photon Physics Quantum Physics Quasar

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20.08.2018
19:18 ScienceDaily.comLight from ancient quasars helps confirm quantum entanglement

New research boosts the case for quantum entanglement. Scientists have used distant quasars, one of which emitted its light 7.8 billion years ago and the other 12.2 billion years ago, to determine the measurements to be made on pairs of entangled photons. They found correlations among more than 30,000 pairs of photons -- far exceeding the limit for a classically based mechanism.

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18:12 Aps.org Editors' SuggestionsCosmic Bell Test Using Random Measurement Settings from High-Redshift Quasars

Author(s): Dominik Rauch, Johannes Handsteiner, Armin Hochrainer, Jason Gallicchio, Andrew S. Friedman, Calvin Leung, Bo Liu, Lukas Bulla, Sebastian Ecker, Fabian Steinlechner, Rupert Ursin, Beili Hu, David Leon, Chris Benn, Adriano Ghedina, Massimo Cecconi, Alan H. Guth, David I. Kaiser, Thomas Scheidl, and Anton Zeilinger Two groups have ruled out local realism on cosmic scales, one using stars and also closing the detection loophole, the other using distant quasars.
[Phys. Rev. Lett. 121, 080403] Published Mon Aug 20, 2018

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16:29 Phys.orgLight from ancient quasars helps confirm quantum entanglement

Last year, physicists at MIT, the University of Vienna, and elsewhere provided strong support for quantum entanglement, the seemingly far-out idea that two particles, no matter how distant from each other in space and time, can be inextricably linked, in a way that defies the rules of classical physics.

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26.07.2018
16:14 Phys.orgHighly magnified gravitationally lensed red quasar detected by astronomers

Astronomers have discovered a highly magnified, gravitationally lensed quasi-stellar object (QSO). The newly found quasar, designated W2M J104222.11+164115.3, is dust-reddened, and exhibits a significant flux anomaly. The finding is reported in a paper published July 14 on the arXiv pre-print server.

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16.07.2018
12:26 Technology.orgDistant quasar providing clues to early-universe conditions

Astronomers using the National Science Foundation’s Very Long Baseline Array (VLBA) have made an image revealing tantalizing details

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10.07.2018
00:37 DailyGalaxy.com"The First Quasar?" Newly Discovered Object's Light has been Traveling 13 Billion of the Universe's 13.7 Billion Years

 
 
 
A newly discovered quasar's light has been traveling nearly 13 billion of the universe's 13.7 billion years to reach us here in Earth. P352-15 is the first quasar with clear evidence of radio jets seen within the first billion years of the universe's history.
Quasars are comprised of enormous black holes accreting matter at the centers of massive galaxies. This newly discovered quasar, called PSO J352.4034-15.3373, is one of a rare breed that doesn't just swallow matter into the black hole but also emits a jet of plasma traveling at speeds approaching that of light. This jet makes it extremely bright in the frequencies detected by radio telescopes. Although quasars were identified more than 50 years ago by their strong radio emissions, now we know that only about 10 percent of them are strong radio emitters.  
Carnegie's Eduardo

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09.07.2018
19:24 FoxNews.comSuperbright quasar could shed light on universe's youth

A newfound quasar is blasting out the brightest radio emissions ever observed in the early universe, new research reports.

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17:54 ScienceDaily.comPlasma-spewing quasar shines light on universe's youth, early galaxy formation

Astronomers found a quasar with the brightest radio emission ever observed in the early universe, due to it spewing out a jet of extremely fast-moving material. Scientists have revealed in unprecedented detail the jet shooting out of a quasar that formed within the universe's first billion years of existence.

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16:56 Nanowerk.comPlasma-spewing quasar shines light on universe's youth, early galaxy formation

Found: Quasar with the brightest radio emission ever observed in the early universe.

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16:56 Phys.orgPlasma-spewing quasar shines light on universe's youth, early galaxy formation

Carnegie's Eduardo Bañados led a team that found a quasar with the brightest radio emission ever observed in the early universe, due to it spewing out a jet of extremely fast-moving material.

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22.06.2018
18:07 DailyGalaxy.com"Cosmic Sleuths" --Missing Baryons of the Universe Found Hidden Between an Ancient Quasar and Our Solar System

 

Ordinary, baryonic, matter exists in the vast spaces between galaxies as highly-ionized oxygen gas at temperatures of about 1 million degrees Celsius. To pin down the missing third, the researchers used the radiation emanating from a distant, ultra-bright black hole called a quasar. That lost matter exists as filaments of oxygen gas at temperatures of around 1 million degrees Celsius that lie in the space between galaxies, said CU Boulder’s Michael Shull, a co-author of the study.
Scientists have found what may be the universe’s lost sock at the back of the dryer—answering a long-running mystery that astrophysicists have dubbed the “missing baryon problem.”  
In a new study, an international team of researchers, including scientists from CU Boulder, located the last reservoir of ordinary matter hiding in the universe. This matter, also called

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18.06.2018
16:41 Phys.orgObservations identify three different activity periods in the quasar 3C 279

An international team of astronomers has conducted multi-wavelength photometric and spectropolarimetric observations of the quasar 3C 279, which revealed three different activity periods in this object. The finding is reported in a paper published June 5 on the arXiv pre-print repository.

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21.05.2018
16:02 Phys.orgTwo bright high-redshift quasars discovered

Astronomers have detected two new bright quasars at a redshift of about 5.0. The newly found quasi-stellar objects (QSOs) are among the brightest high-redshift quasars known to date. The finding was presented May 9 in a paper published on the arXiv pre-print repository.

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13.03.2018
17:02 Phys.orgDouble or nothing—astronomers rethink quasar environment

Using Hyper Suprime-Cam (HSC) mounted on the Subaru Telescope, astronomers have identified nearly 200 "protoclusters," the progenitors of galaxy clusters, in the early universe, about 12 billion years ago, about ten times more than previously known. They also found that quasars don't tend to reside in protoclusters; but if there is one quasar in a protocluster, there is likely a second nearby. This result raises doubts about the relation between protoclusters and quasars.

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16:58 ScienceDaily.comDouble or nothing: Astronomers rethink quasar environment

Astronomers have identified nearly 200 'protoclusters,' the progenitors of galaxy clusters, in the early Universe, about 12 billion years ago, about ten times more than previously known. They also found that quasars don't tend to reside in protoclusters; but if there is one quasar in a protocluster, there is likely a second nearby. This result raises doubts about the relation between protoclusters and quasars.

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12.03.2018
16:09 Phys.orgAstronomers discover two bright high-redshift quasars

Using VST ATLAS and WISE surveys astronomers have identified two new bright high-redshift quasars. The newly found quasi-stellar objects, designated VST-ATLAS J158.6938-14.4211 and VST-ATLAS J332.8017-32.1036, could be helpful in improving our understanding of the evolution of the universe. The finding is reported March 4 in a paper published on arXiv.org.

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20.02.2018
17:13 Phys.orgLyman-alpha emission detected around quasar J1605-0112

Using the Multi Unit Spectroscopic Explorer (MUSE) instrument astronomers have discovered an extended and broad Lyman-alpha emission in the form of a nebula around the quasar J1605-0112. The finding is reported February 9 in a paper published on the arXiv pre-print repository.

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18.01.2018
01:20 UniverseToday.ComWeekly Space Hangout – Jan 17, 2018: Dr. Bram Venemans and Distant Quasars

Hosts: Fraser Cain (universetoday.com / @fcain) Dr. Paul M. Sutter (pmsutter.com / @PaulMattSutter) Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier ) Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg & ChartYourWorld.org) Special Guest: Dr. Venemans is a research staff scientist working at the Max Planck Institute for Astronomy (MPIA) in Heidelberg, Germany. His research topics include the discovery […]
The post Weekly Space Hangout – Jan 17, 2018: Dr. Bram Venemans and Distant Quasars appeared first on Universe Today.

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17.01.2018
14:11 Phys.orgRedshift space distortions measured via quasars in scientific first

The Extended Baryon Oscillation Spectroscopic Survey (eBOSS), the world's largest galaxy survey, is part of Phase IV of the Sloan Digital Sky Survey (SDSS), a major multi-spectral imaging and spectroscopic redshift survey.

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16.01.2018
18:19 WhatReallyHappened.com'Quasars' help scientists detect the structuring of the universe for the first time

The enigmatic universe harbours countless secrets within it, compelling scientists to put in every effort to delve deeper in order to extract information about its existence and consequent evolution.
The universe is also home to numerous super-massive black holes, which emanate incredibly bright and luminous distant points of light called Quasars.

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26.12.2017
18:22 Forbes'Direct Collapse' Black Holes May Explain Our Universe's Mysterious Quasars

Finding something unusual in the Universe doesn't necessarily mean anything's wrong. We may just need to look at it in a new way.

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07.12.2017
17:35 Phys.orgHerschel data links mysterious quasar winds to furious starbursts

Astronomers have used ESA's Herschel Space Observatory to solve a decades-old mystery about the origin of powerful cool gas winds in the hot environs of quasars. The evidence linking these powerful winds to star formation in the quasar host galaxies may also help resolve the mystery of why the size of galaxies in the Universe appears to be capped.

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06.12.2017
22:36 NewScientist.ComMost distant quasar ever seen is way too big for our universe

A quasar from the early universe could help us understand how the biggest black holes form and when the universe had its last major transformation

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21:24 NewScientist.ComMost distant quasar ever seen is way too big for our universe

A quasar from the early universe could help us understand how the biggest black holes form and when the universe had its last major transformation

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02.11.2017
05:35 UniverseToday.ComNew Method for Researching Activity Around Quasars and Black Holes

A new method devised by a team of Chinese and US researchers could lead to accurate estimates on the masses of supermassive black holes.
The post New Method for Researching Activity Around Quasars and Black Holes appeared first on Universe Today.

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31.10.2017
16:45 Phys.orgNew model to research activity around quasars, black holes

A University of Wyoming researcher played a key role in a study that suggests a newly developed computer model can more accurately explain the diversity of quasar broad emission line regions, which are the clouds of hot, ionized gas that surround the supermassive black holes feeding in the centers of galaxies.

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16.10.2017
13:32 Phys.orgThe remarkable jet of the quasar 4C+19.44

Quasars are galaxies with massive black holes at their cores. So much energy is being radiated from near the nucleus of a quasar that it is much brighter than the rest of the entire galaxy. Much of that radiation is at radio wavelengths, produced by electrons ejected from the core at speeds very close to that of light, often in narrow, bipolar jets that are hundreds of thousands of light-years long. The fast-moving charged particles can also scatter photons of light, kicking them up in energy into the X-ray range. Even after more than two decades of study, however, there is still no clear conclusion as to the physical mechanism actually responsible for the X-ray emission. In more powerful quasars, it does appear that this scattering process dominates. In lower power jets, however, the emission characteristics suggest that the X-ray emission is dominated by magnetic field effects, not

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19.09.2017
16:13 Phys.orgNew quasar discovered by astronomers

(Phys.org)—A team of astronomers led by Jacob M. Robertson of the Austin Peay State University in Clarksville, Tennessee has detected a new quasi-stellar object (QSO). They found the new quasar, designated SDSS J022155.26-064916.6, as a result of an analysis of available spectroscopic data. The finding is reported in a paper published Sept. 10 on the arXiv pre-print server.

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12.09.2017
13:35 Phys.orgScientists use mismatch in telescopic data to get a handle on quasars and their 'tails'

Scientists have determined the properties of ionized jets of matter ejected by supermassive black holes in active galactic nuclei. They analyzed unexpected discrepancies between the data of high-precision observations conducted by an international network of radio telescopes and that of Gaia—a space observatory of the European Space Agency equipped with optical telescopes.

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01.08.2017
13:20 Technology.orgQuasars may answer how starburst galaxies were extinguished

Some of the biggest galaxies in the universe are full of extinguished stars. But nearly 12 billion years

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31.07.2017
18:43 ScienceDaily.comQuasars may answer how starburst galaxies were extinguished

Astronomers have located quasars inside four dusty starburst galaxies. The observations suggest quasars may starve this type of galaxy of energy needed to form stars.

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18:22 Yahoo ScienceDid Quasars Halt Star Formation In Early Massive Galaxies?

Some of the oldest and largest galaxies in the universe are full of stars that are dead or dying, but scientists don’t know for certain how these astral dead zones came to be.

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18:17 ScientificAmerican.ComClues Emerge in Mystery of Flickering Quasars

Some of the universe's most luminous objects have disappeared much faster than expected -- Read more on ScientificAmerican.com

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10:05 Phys.orgQuasars may answer how starburst galaxies were extinguished

Some of the biggest galaxies in the universe are full of extinguished stars. But nearly 12 billion years ago, soon after the universe first was created, these massive galaxies were hotspots that brewed up stars by the billions.

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28.06.2017
14:00 Phys.org'Pompom' stars may solve quasar puzzle

Gas filaments surrounding stars like the strands of a pompom may be the answer to a 30-year old mystery: why quasars twinkle.

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24.05.2017
20:55 Nature.ComRapidly star-forming galaxies adjacent to quasars at redshifts exceeding 6

The existence of massive (1011 solar masses) elliptical galaxies by redshift z ≈ 4 (refs 1, 2, 3; when the Universe was 1.5 billion years old) necessitates the presence of galaxies with star-formation rates exceeding 100 solar masses per year at z > 6 (corresponding to an age of the Universe of less than 1 billion years). Surveys have discovered hundreds of galaxies at these early cosmic epochs, but their star-formation rates are more than an order of magnitude lower. The only known galaxies with very high star-formation rates at z > 6 are, with one exception, the host galaxies of quasars, but these galaxies also host accreting supermassive (more than 109 solar masses) black holes, which probably affect the properties of the galaxies. Here we report observations of an emission line of singly ionized carbon ([C ii] at a wavelength of 158 micrometres) in four galaxies at z > 6 that are

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20:55 Nature.ComAstronomy: Quasars signpost massive galaxies

The neighbourhoods of extremely bright astronomical objects called quasars in the early Universe have been incompletely probed. Observations suggest that these regions harbour some of the most massive known galaxies. See Letter p.457

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13.05.2017
02:39 Yahoo ScienceHow Did Massive Quasars Form In The Early Universe?

Astronomers have discovered three quasars — each a billion times the mass of the sun — whose very existence challenges our conventional understanding of how supermassive black holes form and evolve.

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27.04.2017
21:08 Phys.orgAstronomers made first measurements of small-scale ripples in primeval hydrogen gas using rare double quasars

The most barren regions known are the far-flung corners of intergalactic space. In these vast expanses between the galaxies there is just one solitary atom per cubic meter—a diffuse haze of hydrogen gas left over from the Big Bang. On the largest scales, this material is arranged in a vast network of filamentary structures known as the "cosmic web," its tangled strands spanning billions of light years and accounting for the majority of atoms in the universe.

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25.04.2017
16:09 Phys.orgAstronomers detect dozens of new quasars and galaxies

(Phys.org)—A team of astronomers led by Yoshiki Matsuoka of the National Astronomical Observatory of Japan (NAOJ) has detected a treasure trove of new high-redshift quasars (or quasi-stellar objects) and luminous galaxies. The newly found objects could be very important for our understanding of the early universe. The findings were presented Apr. 19 in a paper published on arXiv.org.

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24.03.2017
22:49 Gizmodo.comWhy Is This Quasar Running Away From Such a Handsome Galaxy?

We don’t understand quasars all that well, but are pretty certain that these incredibly bright lights belong in the centers of galaxies. So it looked a little weird when astronomers spotted quasar 3C 186 thirty six thousand light years away from the center of its galaxy, seemingly trying to escape.
Read more...

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14.03.2017
16:19 Phys.orgAstronomers discover 16 new high-redshift quasars

(Phys.org)—Using a new color selection technique, astronomers have detected 16 new luminous, high-redshift quasars. The discovery could be very important for understanding of the early universe, as such high-redshift, quasi-stellar objects provide essential clues on the evolution of the intergalactic medium, quasar evolution and early super-massive black hole growth. The findings were presented in a paper published Mar. 10 on the arXiv pre-print repository.

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10.03.2017
23:42 ScienceDaily.comWhy the discovery of a bevy of quasars will boost efforts to understand galaxies' origins

Late last year, an international team including researchers announced the discovery of more than 60 extremely distant quasars, nearly doubling the number known to science - and thus providing dozens of new opportunities to look deep into our universe's history.

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18:15 Phys.orgWhy the discovery of a bevy of quasars will boost efforts to understand galaxies' origins

Late last year, an international team including researchers from the Kavli Institute for Astronomy and Astrophysics (KIAA) at Peking University announced the discovery of more than 60 extremely distant quasars, nearly doubling the number known to science - and thus providing dozens of new opportunities to look deep into our universe's history.

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26.01.2017
23:24 LiveScience.comFlickering Quasars Used To Measure Universe Expansion | Video

Using gravitational lensing, astronomers have imaged distant quasars with the Hubble Space Telescope. They used the imagery to determine that the Universe is expanding quicker that previously thought.

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25.01.2017
17:00 Phys.orgMysterious faint object detected in the vicinity of a quadruply lensed quasar

(Phys.org)—Astronomers have spotted a mysterious faint object in the vicinity of a quadruply lensed quasar designated MG 0414+0534. The object, which was discovered using the Atacama Large Millimeter/submillimeter Array (ALMA), appears to be a dusty, dark dwarf galaxy or an ultra-diffuse galaxy (UDG). The findings were presented January 19 in a paper published on arXiv.org.

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05.01.2017
18:06 ForbesDistant Quasars Show That Fundamental Constants Never Change

Even over billions and billions of years, the laws of physics were exactly the same.

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21.12.2016
17:12 Phys.orgHigh-redshift quasar discovered by Pan-STARRS

(Phys.org)—A new luminous high-redshift quasar has been detected by one of the telescopes of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The newly discovered quasi-stellar object received designation PSO J006.1240+39.2219 and is the seventh highest redshift quasar known to date. The findings are presented in a paper published Dec. 19 on arXiv.org.

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06.12.2016
03:43 UniverseToday.ComQuasar Light Confirms Consistency Of Electromagnetism Over 8 Billion Years

Back in November, a team of researchers from the Swinburne University of Technology and the University of Cambridge published some very interesting findings about a galaxy located about 8 billion light years away. Using the La Silla Observatory’s Very Large Telescope (VLT), they examined the light coming from the supermassive black hole (SMBH) at its […]
The post Quasar Light Confirms Consistency Of Electromagnetism Over 8 Billion Years appeared first on Universe Today.

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16.11.2016
12:47 Technology.orgDo Extremely Reddened Quasars Extinguish Star Formation?

Galaxies formed and grew billions of years ago by accumulating gas from their surroundings, or colliding and merging
The post Do Extremely Reddened Quasars Extinguish Star Formation? has been published on Technology Org.

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01:47 ScienceDaily.comDo extremely reddened quasars extinguish star formation?

Galaxies formed and grew billions of years ago by accumulating gas from their surroundings, or colliding and merging with other young galaxies. These early stages of galaxy assembly are believed to be accompanied by episodes of rapid star formation, known as starbursts, and rapid growth of a single super-massive black hole in the galactic centers.

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01:31 Nanowerk.comDo extremely reddened quasars extinguish star formation?

Astronomers have linked extremely reddened quasars to strong galactic outflowing winds that inhibit star formation in the early universe.

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01:30 Phys.orgDo extremely reddened quasars extinguish star formation?

Galaxies formed and grew billions of years ago by accumulating gas from their surroundings, or colliding and merging with other young galaxies. These early stages of galaxy assembly are believed to be accompanied by episodes of rapid star formation, known as starbursts, and rapid growth of a single super-massive black hole in the galactic centers.

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27.10.2016
14:46 Technology.orgESO’s VLT Detects Unexpected Giant Glowing Halos around Distant Quasars

An international collaboration of astronomers, led by a group at the Swiss Federal Institute of Technology (ETH) in
The post ESO’s VLT Detects Unexpected Giant Glowing Halos around Distant Quasars has been published on Technology Org.

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26.10.2016
17:33 ScienceDaily.comUnexpected giant glowing halos discovered around distant quasars

Astronomers have discovered glowing gas clouds surrounding distant quasars. This new survey indicates that halos around quasars are far more common than expected. The properties of the halos in this surprising find are also in striking disagreement with currently accepted theories of galaxy formation in the early Universe.

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13:14 Phys.orgVLT detects unexpected giant glowing halos around distant quasars

An international collaboration of astronomers, led by a group at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland, has used the unrivalled observing power of MUSE on the Very Large Telescope (VLT) at ESO's Paranal Observatory to study gas around distant active galaxies, less than two billion years after the Big Bang. These active galaxies, called quasars, contain supermassive black holes in their centres, which consume stars, gas, and other material at an extremely high rate. This, in turn, causes the galaxy centre to emit huge amounts of radiation, making quasars the most luminous and active objects in the Universe.

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16.09.2016
13:38 Phys.orgChanges in a distant quasar

Yale astronomers Grant Tremblay and Meredith Powell are part of the first research team to document a "changing look" quasar through a full cycle from dim to bright to dim again.

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11:39 Technology.orgCh-ch-ch-changes in a distant quasar

Yale astronomers Grant Tremblay and Meredith Powell are part of the first research team to document a “changing
The post Ch-ch-ch-changes in a distant quasar has been published on Technology Org.

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12.09.2016
17:34 ScienceDaily.comDiscovery nearly doubles known quasars from the ancient universe

Quasars are supermassive black holes that sit at the center of enormous galaxies, accreting matter. They shine so brightly that they are often referred to as beacons and are among the most-distant objects we can currently study. A team has discovered 63 new quasars from when the universe was only a billion years old, almost doubling the number of ancient quasars previously known.

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11:10 Phys.orgDiscovery nearly doubles known quasars from the ancient universe

Quasars are supermassive black holes that sit at the center of enormous galaxies, accreting matter. They shine so brightly that they are often referred to as beacons and are among the most-distant objects in the universe that we can currently study. New work from a team led by Carnegie's Eduardo Bañados has discovered 63 new quasars from when the universe was only a billion years old. (It's about 14 billion years old today.)

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01.07.2016
21:24 ScienceDaily.comGravitational lens zooms in on why some quasars have the radio turned down

Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in ‘radio-quiet’ quasars. A study of gravitationally-lensed images of four radio-quiet quasars has revealed the structure of these distant galaxies in unprecedented detail. This has enabled astronomers to trace the radio emissions to a very small region at the heart of the quasars, and helped to solve a 50-year-old puzzle about their source.

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14:28 Phys.orgGravitational lens zooms in on why some quasars have the radio turned down

Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in 'radio-quiet' quasars. A study of gravitationally lensed images of four radio-quiet quasars has revealed the structure of these distant galaxies in unprecedented detail. This has enabled astronomers to trace the radio emissions to a very small region at the heart of the quasars, and helped to solve a 50-year-old puzzle about their source. The results will be presented by Dr Neal Jackson at the National Astronomy Meeting in Nottingham on Friday, 1st July.

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30.03.2016
22:25 Technology.orgNew Research Shows Quasars Slowed Star Formation

Research led by Johns Hopkins University scientists has found new persuasive evidence that could help solve a long-standing
The post New Research Shows Quasars Slowed Star Formation has been published on Technology Org.

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28.03.2016
16:08 ScientificAmerican.ComQuasar Winds Clock In At A Fifth of Light Speed

Quasars can shape the evolution of their galaxies, by blasting 135-million-mile-per-hour winds. Christopher Intagliata reports. -- Read more on ScientificAmerican.com

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24.03.2016
03:04 Nanowerk.comNew research shows quasars slowed star formation

Study finds first observed evidence of galactic-wind phenomenon.

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23.03.2016
20:38 ScienceDaily.comQuasars slowed star formation, new research shows

Research has found new persuasive evidence that could help solve a longstanding mystery in astrophysics: why did the pace of star formation in the universe slow down some 11 billion years ago?

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18:52 Phys.orgQuasars slowed star formation: First observed evidence of galactic-wind phenomenon

Research led by Johns Hopkins University scientists has found new persuasive evidence that could help solve a longstanding mystery in astrophysics: Why did the pace of star formation in the universe slow down some 11 billion years ago?

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