... 2008 June 27 . M81: Feeding a Black Hole . Credit: X-ray: NASA/CXC/Wisconsin/D.Pooley CfA/A.Zezas; . Optical: NASA/ESA/CfA/A.Zezas; UV: NASA/JPL-Caltech/CfA/J.Huchra et al.; IR: NASA/JPL-Caltech/CfA . ... The inset highlights X-rays from some of M81's black holes, including black holes in binary star systems with about 10 times the mass of the sun, as well as the central, supermassive black hole of over 70 million solar masses . ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... M81: Feeding a Black Hole . ... Credit: X-ray: NASA/CXC/Wisconsin/D.Pooley CfA/A.Zezas; . ... The inset highlights X-rays from some of M81's black holes, including black holes in binary star systems with about 10 times the mass of the sun, as well as the central, supermassive black hole of over 70 million solar masses . ... NASA Official: Jay Norris. ... Публикации с ключевыми словами: M81 - black hole - черные дыры . Публикации со словами: M81 - black hole - черные дыры . ...

... Astronomers have used NASA's Hubble Space Telescope to probe the core of the nearest active galaxy to Earth, Centaurus A. Hubble's Near Infrared Camera and Multi-Object Spectrometer was used to peer past the dust to discover a tilted disk of hot gas at the galaxy's center (white bar running diagonally across image center). This 130 light-year diameter disk encircles a suspected black hole which may be one billion times the mass of our Sun. ... Centaurus A (NGC 5128) Fast Facts . ...

... IAU Symposium 267: Evolution of Galaxies and Central Black Holes . ... Feedback . Submit Feedback . ... 2016 Spring Symposium . ... IAU Symposium 267 . ... Such feedback, feeding, and their mutual interaction might possibly account for the tight relationship between galactic bulge mass and central black hole mass. ... Session 1. The first galaxies and black holes . ... Quasar and supermassive black hole demographics . ... Black hole masses, scaling relationships, and their evolution . ...

... ESO . ... Survey Telescopes . ... Near-infrared images of the active galaxy NGC 1097, obtained with the NACO adaptive optics instrument on ESO's Very Large Telescope, disclose with unprecedented detail a complex central network of filamentary structure spiralling down to the centre of the galaxy. ... Our analysis of the VLT/NACO images of NGC 1097 shows that these filaments end up at the very centre of the galaxy ", says co-author Juha Reunanen from ESO. ... The Centre of the Active Galaxy NGC 1097 ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Behemoth black hole found in an unlikely place . ... Astronomy for Kids . ... Feeding frenzy of a supermassive black hole . ... Without much material, the black hole remains fairly quiet, at least when compared with the supermassive black holes in some other galaxies. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

... Feeding the Monster: Gas Caught in its Death Spiral into a Massive Black Hole . ... Stromlo Professor Mike Dopita have used the Hubble Space Telescope to discover how a massive Black Hole in a nearby galaxy feeds itself. ... Earlier Hubble Telescope data obtained by another team member, Professor Holland Ford of Johns Hopkins University in Baltimore, Maryland, had found a disk of gas rushing around the Black Hole at a speed of 500 kilometers a second. ...

... If the mass of the collapsing star is more than three solar masses, however, no force can prevent it from collapsing completely to become a black hole. What is a black hole? Mini black holes . ... For Further Reading About Black Holes A black hole is a region of space in which the pull of gravity is so strong that nothing can escape. ... A black hole with a mass less than three solar masses would not form on its own; its gravity is too weak to cause it to completely collapse in on itself. ...

The black hole (BH) masses in the centers of active galactic nuclei (AGNs) have been estimated for a sample of radio-selected, flat-spectrum quasars to investigate the relationship between BH mass and radio properties of quasars. ... In contrast to previous studies, we find no correlation between BH mass and radio power in these AGNs. We find a range in BH mass similar to that seen in radio-quiet quasars from previous studies. ... You can now find me in room 99 at Epping. ...

Blackholes Forum Message . Forums: . ... I HAVE A NEW THEORY . ... White holes are the opposite of black holes in the universe. ... Everything swallowed by our galaxy's central black hole. ... The elements and building block of life pass thru our galaxy's central black hole and reappear inside our galaxy's stars and planets. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

Martin Elvis: Short Curriculum Vitae Astrophysicist, Ph.D.: Leicester University, X-ray Astronomy (1978) Current Positions: 1997-present Senior Astrophysicist, Smithsonian Astrophysical Observatory 1980-1997 Astrophysicist, Smithsonian Astrophysical Observatory 1991-1998 Chandra X-ray Center, Science Data System Group Leader Recent Professional Activities: 2009 Member, SOC "Evolution of Galaxies and Central Black Holes: Feeding and Feedback" (IAU Symp. ... ApJS, 2009, in press. ...

... The event horizon is the boundary of a black hole) . ... When the supermassive star implodes (collapses under it?s own gravity) a black hole is formed. Many black holes have been found in the centres of galaxies. ... It was thought that black holes don?t give out any energy at all (except when engulfing stars). ... It is thought that as the stars pass near to the centre, they are pulled in by the black hole and forced to remain orbiting around the black hole. ...

... Astronomy news . ... NASA's Spitzer Images Out-of-This-World Galaxy . ... It is spiral-shaped like our Milky Way, with long, spindly arms of stars. The "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. In this color-coded infrared view from Spitzer, the area around the invisible black hole is blue and the ring of stars, white. ... The ring around the black hole is bursting with new star formation. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... Search . ... ITHACA, N.Y. -- Once considered just your average single asteroid, 2001 SN263 has now been revealed as the first near-Earth triple asteroid ever found. read more .. Neutron stars and black holes aren't all they've been thought to be. In fact, neutron stars can be considerably more massive than previously believed, and it is more difficult to form black holes, according to new research developed by using the Arecibo Observatory in Arecibo, Puerto Rico. read more .. ...

... SS433 is a close binary system, one star is a supergiant, a second one is a black hole. ... Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears, all the excess gas glows up to several tens of thousands degrees and is ejected off the disk with enormous velocities. ... SAO researchers have found an evidence of the supercritical accretion onto a black hole in SS433, which follows from a brightness variability of the SS433 disk. ...

... Acceleration of particles in the vicinity of a massive black hole We propose a two-step mechanism for charged particle acceleration in the magnetosphere of a massive black hole surrounded by an accretion disk. Particles first gain energy by stochastic process during the accretion phase. It is shown that effective proton acceleration up to energies eV is possible in the turbulent magnetized accretion disk. ...

... Black Holes formation . ... The colloquium will be concentrated on the new lewel of theoretical and experimental understanding of the BH nature and related phenomenae. 10-15-minutes original presentations and short 5-minute presentations for the discussion are welcomed. ... In the case of numerouse proposals talks will be selected by the Organizers. ... Date of the colloquium 03 March 2000 г. We plan, that the final agenda will be announced on the ASA seminar in February. ... List of proposed talks ...