... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Searching for Far Out and Wandering Worlds . ... Behemoth black hole found in an unlikely place . ... black holes . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... The weird world of black holes . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• Feeding frenzy of a supermassive black hole | Astronomy.com
• Web Extra: Black holes in the Milky Way | Astronomy.com
• Do black holes ever disappear? | Astronomy.com

You might wonder how a black hole could be found if nothing including light can escape from it. ... HDE 226868 is a massive blue supergiant star; its companion is believed to be a black hole, surrounded by an accretion disc of gases from HDE 226868 which are spiraling into the black hole. ... Three other objects -- LMC X-3 in the Large Magellanic Cloud galaxy, and A0620-00 and V404 Cygni in our galaxy -- are also believed to have black holes as one of their components. ...

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• ASP: Black Holes to Blackboards: The Sun is a Mass of Incandescent Gas
• ASP: Black Holes to Blackboards: Building Universes in the Classroom
• ASP: Black Holes: An Introductory Resource List

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

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• Black holes in galactic nuclei
• Dust disk around a black hole in galaxy NGC 7052
• Active galaxies and black holes

... A Black Hole in M87? ... Credit Copyright: H. Ford ( JHU and StScI ), R. Harms ( ARC ), NASA Explanation: The center of nearby giant galaxy M87 is a dense and violent place. In this 1994 photograph by the Hubble Space Telescope , a disk of hot gas was found to be orbiting at the center of this massive elliptical galaxy . ... The rotation speed of gas in this disk indicates the mass of the object the gas is orbiting, while the size of the disk indicates an approximate volume of the central object. ...

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• A Black Hole in M87's Center?
• Астронет > A Black Hole in M87?
• Астронет > A Black Hole in M87's Center?

... April 5, 1997 . A Black Hole in M87? ... In this 1994 photograph by the Hubble Space Telescope , a disk of hot gas was found to be orbiting at the center of this massive elliptical galaxy . ... The rotation speed of gas in this disk indicates the mass of the object the gas is orbiting, while the size of the disk indicates an approximate volume of the central object. These observations yield a central density so high that the only hypothesized object that could live there is a black hole . ...

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• APOD Index - Stars: Black Holes
• APOD: March 5, 1996 - A Black Hole in M87's Center?
• APOD: 2013 November 20 - Heavy Black Hole Jets in 4U1630-47

... 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. ...

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• Pink Black Holes: Frequently Asked Questions
• Some Black Holes are Pink
• COALA - Computational Astrophysics Laboratory

... 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. ...

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... 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. ...

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• SS433
• Figure 2

... 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. ...

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• Phil Plait's Bad Astronomy: Mad Science

... 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. ...

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• Strong Gravity in the Vicinity of Supermassive Black Holes - by Eamon Scullion,

Blackholes Forum Message . ... Space Inside The Black Hole . ... All space and mass enter the black hole through null space...they do enter the black hole though, but as an instananeous transition through null space...time does not enter it...time is the event horizon. ... Its area of the event horizon describes the latent negative space energy one can tap; the volume of the black hole describes the latent positive space energy one can tap. ... www.astronomy.net . About Astronomy Net | ...

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• Use Light Radited From Stars Orbiting The Black Hole - an Astronomy Net
• The River Model Of Black Holes - an Astronomy Net Blackholes2 Forum Message
• Question On How Black Hole Sees Infalling Matter - an Astronomy Net Blackholes

... ESO Acronyms . ... Quasars and Black Holes . ... Black Hole at the Centre of our Galaxy . ... This view shows a simulation of how a gas cloud that has been observed approaching the supermassive black hole at the centre of the galaxy may break apart over the next few years. This is the first time ever that the approach of such a doomed cloud to a supermassive black hole has been observed and it is expected to break up completely during 2013. ... Milky Way : Galaxy : Component : Central Black Hole . ...

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• Simulation of gas cloud approaching the black hole at the centre of the Milky
• Feeding the Monster | ESO
• Zooming in on the disturbed galactic duo NGC 3169 and NGC 3166 | ESO

... Resembling a gigantic hubcap in space, a 3,700 light-year-diameter dust disk encircles a 300 million solar-mass black hole in the center of the elliptical galaxy NGC 7052. ... Because the front end of the disk eclipses more stars than the back, it appears darker. ... Despite its size, the disk is 100 times less massive than the black hole. ... The bright spot in the center of the disk is the combined light of stars that have crowded around the black hole due to its strong gravitational pull. ...

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• Hubble Finds A Bare Black Hole Pouring Out Light
• Hubble Provides Multiple Views of How to Feed a Black Hole (PRC98-14)
• Dust evolution across the CO snowline in a protoplanetary disk

Next: Cyg X-1 as a Up: Black Holes in Binaries Previous: Black Hole Creation in . The discovery of binary radiopulsars with massive unseen companions ( >3- ) would be of great importance to fundamental physics and modern theory of stellar evolution, providing a compelling evidence for the existence of BH in nature. The formation of binaries consisting of a BH in a pair with a radiopulsar (PSR) has been discussed previously by Narayan et al. ... Здесь должна быть Table 11 (Note к Table 11) . ...

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• Black Hole Creation in Massive Binary Systems
• Colloquium "BLACK HOLES - 2000"
• Black Holes in Binaries

Next: Elliptical Galaxies. ... NGC 4258 is a nearby ( D = 6.4 Mpc) active spiral galaxy with high luminosity H 2 O maser emission. ... This provides the most compelling evidence so far for a black hole in the centre of a galaxy. ... As NGC 4258, the galaxies NGC 3079, NGC 1068, NGC 4945, and Circinus each host an H 2 0 megamaser (apparent isotropic luminosity > 10 L ). ... Weaker H 2 0 masers are also known in NGC 253, M82 and a few other galaxies (see Greenhill et al. 1990, and references therein). ...

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• Growth of Black Hole
• Merging Black Holes in Galaxies: Galaxy Evolution, AGN and Gravitational Waves
• Southern Cross Astrophysics Conference Series

... 2002) Coordinated fueling: nearby AGN hosts Narrowline AGN hosts in SDSS: high M* and * but "black" rum younger stellar ages (not just in nucleus!) coordinated fueling of star formation and light rum accretion is key. ... Vermeulen et al. (2003): 33% of radioloud AGN (z < 0.8) show HI absorption features, more frequently (and more highly) blueshifted than redshifted. ... HI absorption against radioloud AGN traces a mixture of infall, outflow, and rotation; key fuel may be hot gas. ...

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• http://www.naic.edu/~astro/frontiers/NewScieComa_Apr07.pdf
• http://www.naic.edu/~astro/chicago2/talks/Harrison-HighEnergy-Radio_Connection.pdf
• AO RSS: Contact Form

Laboratory of Stellar Physics . ... A study of close binaries with black holes, neutron stars and white dwarfs. ... A study of SS433 - the massive close binary with a black hole in the regime of supercritical accretion . ... A search for intermediate-mass black holes (IMBH). The black holes which are not supermassive black holes observed in quasars, and which were formed not in massive stars. ... A search for new magnetic stars, new CP stars, measurements of magnetic fields in stars . ...

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... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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• Истомин Яков Николаевич (ФИАН)
• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN
• Поутанен Юрий Иормович (Oulu Univ.)

... 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. ...

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• MAO NASU :: Topic: The DRAGON globular cluster simulations: a million stars,

Astronomy suffers from the `Static Illusion' - because astronomical changes usually occur over intervals much longer than a human lifetime they appear static. This illusion affects our understanding of how astronomical objects work. ... Observations at the 1/10th arcsecond level with HST and near-infrared adaptive optics on ground based telescopes are beginning to create movies of `astronomy in motion'. ... Proto-star HH-30 expanding jet HST.. Young binary, XZ Tau, expanding `bubbles' HST.. ...

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• dictionary
• Chandra Haiku
• Black Hole X-ray Binaries with Massive Companions