News tagged with supermassive black holes

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A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays ...

Oct 29, 2012
3.9 / 5 (14) 1 | with audio podcast

Revealing a mini-supermassive black hole

One of the lowest mass supermassive black holes ever observed in the middle of a galaxy has been identified, thanks to NASA's Chandra X-ray Observatory and several other observatories. The host galaxy is ...

Oct 24, 2012
4.5 / 5 (4) 4 | with audio podcast

Giant black holes lurking in survey data

(Phys.org)—Scientists at the University of Cambridge have used cutting-edge infrared surveys of the sky to discover a new population of enormous, rapidly growing supermassive black holes in the early Universe. ...

Oct 08, 2012
5 / 5 (5) 1 | with audio podcast

Hubble spotted a supernova in NGC 5806

(Phys.org)—A new image from the NASA/ESA Hubble Space Telescope shows NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). It lies around 80 million light years from Earth. Also visible in ...

Sep 02, 2012
4.6 / 5 (10) 0 | with audio podcast

WISE survey uncovers millions of black holes

(Phys.org)—NASA's Wide-field Infrared Survey Explorer (WISE) mission has led to a bonanza of newfound supermassive black holes and extreme galaxies called hot DOGs, or dust-obscured galaxies.

Aug 29, 2012
4.7 / 5 (15) 30 | with audio podcast

A super cluster of galaxies

(Phys.org)—Most galaxies lie in clusters, groupings of several to many thousands of galaxies. Our Milky Way galaxy itself is a member of the "Local Group," a band of about fifty galaxies whose other large ...

Aug 28, 2012
5 / 5 (7) 22 | with audio podcast

Image: Black hole caught in a stellar homicide

(Phys.org) -- This computer-simulated image shows gas from a star that is ripped apart by tidal forces as it falls into a black hole. Some of the gas also is being ejected at high speeds into space.

Jul 12, 2012
4 / 5 (4) 0 | with audio podcast

Radio galaxies in the distant universe

(Phys.org) -- For over a decade astronomers have been probing a region of the northern sky, not far from the handle of the Big Dipper, that is relatively free of bright stars and the diffuse glow of the Milky ...

Jun 26, 2012
4.8 / 5 (6) 0 | with audio podcast

Black hole growth found to be out of sync

(Phys.org) -- New evidence from NASA's Chandra X-ray Observatory challenges prevailing ideas about how black holes grow in the centers of galaxies. Astronomers long have thought that a supermassive black hole ...

Jun 11, 2012
4.6 / 5 (9) 1 | with audio podcast

ALMA turns its eyes to Centaurus A

(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...

May 31, 2012
4.9 / 5 (10) 0 | with audio podcast