... 2008 November 9 . Two Black Holes Dancing in 3C 75 . Credit: X-Ray: NASA / CXC / D.Hudson, T.Reiprich et al. ... Explanation: What's happening at the center of active galaxy 3C 75? The two bright sources at the center of this composite x-ray (blue)/ radio (pink) image are co-orbiting supermassive black holes powering the giant radio source 3C 75 . ... At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away. ... About APOD | ...

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• APOD: 2014 February 24 - The Cloudy Cores of Active Galaxies
• APOD: 2012 November 2 - The Black Hole in the Milky Way
• APOD: 2004 September 8 - Molecular Torus Surrounds Black Hole

... The Cloudy Cores of Active Galaxies . ... Credit Copyright: NASA's GSFC , W. Steffen ( UNAM ) Explanation: What would it look like to travel to the center of an active galaxy? Most galactic centers are thought to house black hole s millions of times more massive than our Sun. ... Publications with keywords: Galactic Center . Publications with words: Galactic Center . ... A Laser Strike at the Galactic Center . ... The Diner at the Center of the Galaxy . Kona Galaxy Garden . ...

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• Molecular Torus Surrounds Black Hole
• Two Black Holes Dancing in 3C 75
• M82 s Middle Mass Black Hole

... Figure 2 : NGC 7052 HST images . ... MPG Movie : Animation of stellar motions around black hole in M32 . Massive BHs are thought to be responsible for the energy production in active galaxies, and are believed to be common in quiescent galaxies as well. Dynamical evidence for this can be sought by studying the kinematics of stars and gas in galactic nuclei. In the 1970's M87 was the first galaxy for which stellar kinematical data hinted at a BH, but not conclusively. ...

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• Active galaxies and black holes
• The Demography of Super-massive Black Holes
• STScI Active Galaxies Lunch Talk Series

... Black holes are found at the centres of galaxies which are similar in size to our own Milky Way Galaxy or larger. When black holes collide and merge they form supermassive black holes which are events among the most powerful in the universe. ... 55, No. 1, pages 1-5, 'Observational Effects of Strong Gravity in Vicinity of Supermassive Black Holes' . ... International Year of Astronomy, Ireland National Node . ...

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• Black Holes

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. ...

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• The peculiar galaxy NGC 4258: A black hole candidate.
• ATNF Colloquium
• Numerical simulations on the relative importance of starbursts and AGN in

home education > resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... On how our time differs from the early universe in terms of what galaxies are doing, and what role supermassive black holes play. ... Discusses how supermassive black holes powering the centers of galaxies may be more common than thought. ... On Hubble observations showing how common supermassive black holes are in galaxies. ...

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• ASP: Black Holes
• ASP: Astronomy in the News
• ASP: Beacons in the Gloom

... PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Black hole accretion versus star burst episodes: what is the engine of powerful active galaxies? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... The aim of this research project is to understand the emission mechanism(s) in these active galaxies: . how much power is ultimately due to accretion onto supermassive black holes and how much is due to star formation processes ? ...

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• ESO - Central Massive Objects: The Stellar Nuclei - Black Hole Connection
• Feeding the Monster | ESO
• CafУ? & Kosmos 12 November 2013 | 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 Provides Multiple Views of How to Feed a Black Hole (PRC98-14)
• Research Interests
• APOD: October 18, 1999 - NGC 3603: An Active Star Cluster

... Towards a Truly Unified Model of AGN . ... The Unified Model holds that the aspect-dependent effects primarily determine the nature of the active galactic nucleus that we observe. ... The full postscript file can be obtained here: . The PASA Latex file can be obtained here: . The postscript file of Fig 1 can be obtained here: . ...

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• Julie Banfield | Astronomer
• IAU Commission #34 (Interstellar Matter)
• COALA - Computational Astrophysics Laboratory

... Jets from Black Holes in Active Galactic Nuclei . Dr. Alan Marscher, Boston University . ... He is the leader of the Blazar Research Group (http:/www.bu.edu/blazars) in the Institute for Astrophysical Research (http:/www.bu.edu/iar) at Boston U. Dr. Marscher composes folk/pop songs in both English and Russian. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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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)

Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries . Two different types of stellar BH formation exist: (1) direct core collapse   of a massive star and (2) AIC of a NS. A BH of the first type presumably will have a mass comparable to that of the collapsing star and can be born both from a single star and in a binary system. ... Next: Binary Radiopulsars with Black Up: Black Holes in Binaries Previous: Black Holes in Binaries Mike E. Prokhorov . ...

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• Seminars
• Binary Radiopulsars with Black Holes
• Black Holes in Binaries

... 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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• Space Research Institute (IKI) Seminar
• CYlindrical GAmma-ray Monitor CYGAM -
• (S-6) Seeing the Sun in a New Light

... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

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• Evidences of supercritical accretion onto black hole in SS433
• X-rays binary Cyg X-3
• Detection of unique bright radio flare of X-ray binary

... 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/vscience/schedule/tpfiles/GehatagA2936tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/GehatagA2936tp.ps
• http://www.naic.edu/vscience/schedule/tpfiles/HotagA2196tp.pdf

Astronomers examining the properties of black hole jets compared 54 gamma-ray bursts with 234 active galaxies classified as blazars and quasars. Surprisingly, the power and brightness of the jets share striking similarities despite a wide range of black hole mass, age, and environment. Regardless of these differences, the jets produce light by tapping into similar percentages of the kinetic energy of particles moving along the jet, suggesting a common underlying physical cause. ...

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• Active supermassive black holes revealed in merging galaxies | Astronomy.com
• NASA satellite reveals active galaxies are different near and far |
• Astronomers discover close-knit pairs of massive black holes | Astronomy.com

... 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
• Phil Plait's Bad Astronomy: Misconceptions

Blackholes Discussion Forum . Forums: . ... black hole pump? - sleepvark - September 3, 2014 - 21:13 UTC . ... WHAT IS Fe1 neagative?This is dark matter..... - theoracle - January 27, 2009 - 19:11 UTC . ... hbar=e^2/e0c - garrydenke - June 7, 2005 - 14:05 UTC . ... black hole theory - astronomy124 - February 24, 2005 - 04:47 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Black Holes And RedShift - an Astronomy Net Blackholes Forum Message
• The River Model Of Black Holes - an Astronomy Net Blackholes2 Forum Message
• Black Holes And Static Photon Packets - an Astronomy Net Blackholes Forum

Main Publications Seminars Current measurements Personnel . ... RATAN-600 data for the BL Lacertae objects (multi-frequency catalogue, Version 1.0) . ... During many years the RATAN-600 radio telescope is used for the intensive studies of the active galactic nuclei (AGNs) at frequencies from 1 to 30 GHz. ... RATAN-600 multi-frequency measurements of flaring activity of BL Lacertae, ATel #5002 . RATAN-600 multi-frequency measurements of the gamma-ray blazar BL Lacertae , ATel #4600 . ...

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• X-rays binary Cyg X-3
• Group of Relativistic Astrophysics, Special Astrophysical Observatory ? GRA SAO
• X-ray binaries with relativistic jets -- microquasars

... The highest redshift X-ray jet discovered . by Chandra in GB 1428+4217 at z = 4.72 . X-ray jet discovered by Chandra . ... Science Papers on ADS . ... Chandra Press Release . The paper describing the details nas been published in ApJ and it is available also on astro-ph Feb. ... The jet paper published in ApJ Letters is available on astro-ph Oct. ... ApJ Letters paper available on astro-ph: Paper 2003 Feb. ... ApJ papers available on astro-ph: Paper 1, 2002 and Paper 2, 2007 . ...

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• Black Hole X-ray Binaries with Low Mass Companions
• dictionary