Tag Archive for 'Quasar'

An artist’s impression of a quasar and neighboring merging galaxy. The galaxies observed by Decarli et al are so distant that no detailed images are possible at present. This combination of images of nearby counterparts gives an impression of how they might look in more detail. Image credit: Max Planck Institute for Astronomy / NASA / ESA / Hubble.

Astronomers Discover New Kind of Galaxy: Rapidly Star-Forming Galaxies from Early Universe

May 25, 2017 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have discovered a new kind of galaxy which, although very old — formed...

This is an artist impression of a progenitor of Milky Way-like galaxies in the early Universe with a background quasar shining through a ‘super halo’ of hydrogen gas surrounding the galaxy. New ALMA observations of two such galaxies reveal that these vast halos extend well beyond the galaxies’ dusty, star-forming disks. Image credit: A. Angelich / NRAO / AUI / NSF.

ALMA Spots Two Young Milky Way-Like Galaxies in Early Universe

Apr 3, 2017 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed a pair of massive, dusty galaxies seen when the Universe was only...

The elliptical galaxy 3C186, located about 8 billion years from Earth, is most likely the result of a merger of two galaxies. This is supported by arc-shaped tidal tails, usually produced by a gravitational tug between two colliding galaxies, identified by M. Chiaberge et al. The merger of the galaxies also led to a merger of the two supermassive black holes in their centers, and the resultant black hole was then kicked out of its parent galaxy by the gravitational waves created by the merger. The bright, star-like looking quasar can be seen in the center of the image. Its former host galaxy is the faint, extended object behind it. Image credit: NASA / ESA / M. Chiaberge, STScI.

Supermassive Black Hole Found 35,000 Light-Years from Home

Mar 24, 2017 by News Staff

Astronomers have uncovered a monster black hole that has been propelled out of the center of a distant galaxy, called 3C 186, by what could be the power...

HE0435-1223, located in the centre of this wide-field image, is among the five best lensed quasars discovered to date. The foreground galaxy creates four almost evenly distributed images of the distant quasar around it. Image credit: NASA / ESA / Hubble / S.H. Suyu et al.

Astronomers Use Gravitational Lensing to Measure Hubble Constant

Jan 27, 2017 by News Staff

Astronomers from the international H0LiCOW (H0 Lenses in COSMOGRAIL’s Wellspring) collaboration have made a new measurement of the Hubble constant —...

This image shows a bright gaseous halo around the quasar Q0042-2627. Image credit: Elena Borisova et al.

Astronomers Find Giant Gaseous Halos around Distant Quasars

Oct 26, 2016 by News Staff

A group of astronomers led by ETH Zurich scientist Elena Borisova has spotted giant clouds of glowing intergalactic gas around distant quasars. This image...

This artist’s impression shows our Milky Way Galaxy as it may have appeared 6 million years ago during a phase of quasar-like activity. Outside of that bubble, a pervasive ‘fog’ of million-degree gas might account for the galaxy’s missing matter of 130 billion solar masses. Image credit: Mark A. Garlick / CfA.

Milky Way Galaxy Underwent Brief Period of Quasar-Like Activity 6 Million Years Ago

Aug 30, 2016 by News Staff

Milky Way’s center is currently a quiet place. But it wasn’t always this way – a new study published in the Astrophysical Journal Letters (arXiv.org...

In an artist’s conception, heated galactic wind shown in the hazy portion of the picture emanates from the bright quasar at the edge of a black hole, scattering dust and gas. If allowed to cool, that dust and gas would begin to form stars. Image credit: Johns Hopkins University.

Ancient Quasars Slowed Star Formation 11 Billion Years Ago, Scientists Say

Mar 24, 2016 by News Staff

Researchers appear to have an explanation for a longstanding question in astrophysics: why did the pace of star formation in the Universe slow down 11...

This wide-field image shows the patch of sky around the distant quasar PKS 1939-315 (green cross). Image credit: Centre de Données astronomiques de Strasbourg / SIMBAD.

Strangely Shaped Plasma Lenses May Lurk in Milky Way’s Interstellar Medium

Jan 21, 2016 by News Staff

According to a team of astronomers led by Dr. Keith Bannister of CSIRO Astronomy and Space Science Division, invisible noodle- or hazelnut-shaped plasma...

This is an artist’s impression of the hot, dust-obscured galaxy W2246-0526. Image credit: NRAO / AUI / NSF / Dana Berry / SkyWorks / ALMA / ESO / NAOJ.

Universe’s Most Luminous Galaxy is Tearing Itself Apart

Jan 15, 2016 by Natali Anderson

The galaxy W2246-0526 – the most luminous known galaxy in the Universe – is so turbulent that it is in the process of ejecting its entire supply...

Artist’s depiction of a black hole merger. Image credit: NASA / CXC / A. Hobart / Josh Barnes, University of Hawaii / John Hibbard, NRAO.

Astronomers Find Closest Pair of Supermassive Black Holes

Sep 17, 2015 by News Staff

A team of U.S. astronomers has found the closest pair of supermassive black holes ever discovered in the Universe. Artist’s depiction of a black hole...

This Hubble image shows the extraordinary galaxy Markarian 231. Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA / Hubble Collaboration / A. Evans, University of Virginia, Charlottesville / NRAO / Stony Brook University.

Supermassive Binary Black Hole Found in Nearest Quasar Markarian 231

Aug 27, 2015 by News Staff

An international team of astrophysicists and astronomers, led by Dr Youjun Lu of the National Astronomical Observatories of China, has found a supermassive...

Using the Cosmic Web Imager (CWI) to study a system with two quasars 10 billion light-years away, the astronomers have unveiled a protogalaxy being fed cool gas by a filament of the cosmic web. The quasar UM 287 is the larger object at right; the newly-discovered protogalaxy is above and to the left of UM 287. This picture combines a visible light image of the system with CWI data; a filament of the cosmic web can be seen funneling cold gas onto the protogalaxy. Image credit: Chris Martin / PCWI / Caltech.

Astronomers Discover Enormous Protogalaxy 10 Billion Light-Years Away

Aug 7, 2015 by News Staff

Astronomers using the Palomar Cosmic Web Imager have discovered a giant protogalaxy 10 billion light-years away, and found that it is connected to a filament...

This image shows the quadruple quasar SDSS J0841+3921 (quasars are indicated by arrows). Image credit: Joseph Hennawi / Fabrizio Arrigoni-Battaia.

Astronomers Discover First Quadruple Quasar

May 15, 2015 by News Staff

Astronomers using two 10-m optical/infrared telescopes at the W. M. Keck Observatory have discovered the first quadruple quasar, catalogued as SDSS J0841+3921. This...

Astronomers Discover Extremely Close Pair of Supermassive Black Holes

Apr 21, 2015 by News Staff

A group of astronomers led by Tingting Liu of the University of Maryland has discovered a pulsing light signal that hints at a close pair of supermassive...

This Hubble image shows ghostly green filaments, lying within galaxy 2MASX J22014163+1151237. This filament was illuminated by a blast of radiation from a quasar - a very luminous and compact region that surrounds the supermassive black hole at the center of its host galaxy. Its bright green hue is a result of ionized oxygen, which glows brightly at green wavelengths. Image credit: NASA / ESA / W. Keel, University of Alabama.

Hubble Captures Mysterious ‘Quasar Ghosts’

Apr 2, 2015 by News Staff

Astronomers using the Hubble Space Telescope have photographed eight unusual looped structures – ephemeral ‘ghosts’ of quasars that flickered...

This image shows SDSS J0100+2802 (center), the brightest quasar in the early Universe. Image credit: Sloan Digital Sky Survey.

Astronomers Discover Record-Breaking Quasar

Feb 25, 2015 by News Staff

A group of astronomers from the United States, China, Chile, and Australia, has discovered the brightest quasar in the early Universe, powered by the most...

Supermassive black holes at the cores of galaxies blast radiation and ultra-fast winds outward, as illustrated in this artist's conception, based on an image of the Pinwheel galaxy from Hubble. Image credit: NASA / JPL-Caltech.

NuSTAR and XMM-Newton Space Telescopes Capture Ultra-Fast Black Hole Winds

Feb 23, 2015 by News Staff

Using ESA’s XMM-Newton and NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray telescopes, astronomers have discovered that the super-fast...

This artist’s concept shows a changing look quasar. Image credit: Michael Helfenbein / Yale University.

Astronomers Discover First ‘Changing Look’ Quasar

Jan 23, 2015 by News Staff

A team of scientists led by Dr Stephanie LaMassa of Yale Center for Astronomy & Astrophysics has identified the first changing look quasar, a gleaming...

This artist's impression shows the mysterious alignments between the spin axes of quasars and the large-scale structures they inhabit; these alignments are over billions of light-years and are the largest known in the Universe. Image credit: ESO / M. Kornmesser.

Mysterious Alignment of Quasar Axes with Universe’s Large-Scale Structures Revealed

Nov 20, 2014 by News Staff

European astronomers using ESO’s Very Large Telescope have found that the rotation axes of quasars are parallel to each other over very long distances...

This image, with taken with the Palomar Cosmic Web Imager, shows the quasar QSO 1549+19; blue shows hydrogen gas surrounding and inflowing to the quasar. Image credit: Christopher Martin / Robert Hurt.

Astronomers Directly Observe Intergalactic Medium

Apr 30, 2014 by News Staff

An international team of astronomers using the Palomar Cosmic Web Imager has captured stunning images of the intergalactic medium – the diffuse gas...

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