... 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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• Dust disk around a black hole in galaxy NGC 7052
• HST Observer Monthly
• M51 Release

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

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• Chandra finds fastest wind from stellar-mass black hole | Astronomy.com
• Ancient super-bright quasar with massive black hole found | Astronomy.com
• If photons have no mass, how can black holes gravitationally affect them? How

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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• Time Waits For No Hole - an Astronomy Net Blackholes Forum Message
• Can Black Holes Create Space Time? - an Astronomy Net Blackholes Forum Message
• The River Model Of Black Holes - an Astronomy Net Blackholes2 Forum Message

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: Book Review
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... 2014 March 23 . The View Near a Black Hole . ... Explanation: In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole . ... The gas surrounding GRO J1655-40, for example, has been found to display an unusual flickering at a rate of 450 times a second. Given a previous mass estimate for the central object of seven times the mass of our Sun , the rate of the fast flickering can be explained by a black hole that is rotating very rapidly. ...

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• APOD: 2006 May 28 - GRO J1655 40: Evidence for a Spinning Black Hole
• APOD: 2010 September 5 - GRO J1655 40: Evidence for a Spinning Black Hole
• APOD: 2004 December 26 - GRO J165540: Evidence for a Spinning Black Hole

... Inspired by the first direct detection of gravitational waves by LIGO, this simulation video plays in slow motion but would take about one third of a second if run in real time. ... Dubbed GW150914 , the gravitational waves detected by LIGO are consistent with the merger of 36 and 29 solar mass black holes at a distance of 1.3 billion light-years. ... Publications with keywords: black hole - gravitational radiation . ... LIGO Detects Gravitational Waves from Merging Black Holes . ...

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• XWare > APOD
• Planet Near a Galaxy Core
• Journal "Peremennye Zvezdy"

does it have to be Eddington anyway, it accretes from plane and ejects along axis ­ answer - so we can calculate black hole mass Michael Brown ­ both models are likely to be incorrect but they are still very popular Matt Jarvis ­ this is now a very famous correlation based on limited data Bill Coles ­ this a well understood problem that doesn't need Baysian techniques Mark Lacy - high z radio galaxies and SMBH ­ ...

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• PPTA Wiki | Internal / Science
• CASS News
• ATNF Colloquium

... 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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• Stars Beyond Maturity
• Strong Gravity in the Vicinity of Supermassive Black Holes - by Eamon Scullion,
• Refereed Journal Publications 1999

Observations over the last decade indicate black-holes likely resided at the heart of most if not all galaxies. The correlation between the masses of these compact nuclear sources and their host galaxy is poorly understood and likely plays an important role in the formation and evolution, of at least the most massive systems, due to AGN feedback. ... I will give a brief summary of the reverberation mapping technique and describe the important role SkyMapper photometry can play in this program. ...

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• IAU Commission #34 (Interstellar Matter)
• Some Black Holes are Pink
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... 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: Article to gravitational wave detection by LIGO... N-body
• MAO NASU :: Topic: The DRAGON globular cluster simulations: a million stars,
• MAO NASU :: Topic: The third-order space-by-time relation (1/1)

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

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• Metagalaxy sector, archive 2015
• Detection of unique bright radio flare of X-ray binary
• Evidences of supercritical accretion onto black hole in SS433

... 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 field
• Dust grains from the heart of supernovae

... 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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... 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
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... Using the amazing power of the ALMA telescope, astronomers have unlocked some of the mysteries surrounding supermassive black holes that lie at the centre of galaxies. ... Well, supermassive black holes are the largest type of black hole . ... Astronomers are almost certain that we have a supermassive black hole at the centre of our own galaxy, the Milky Way. In fact, it is now widely accepted that there is a supermassive black hole at the centre of most galaxies. ...

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• ESO - Thesis Topic: Why most supermassive black holes do not accrete material
• ESO - Thesis Topic: How much can a supermassive black hole consume?
• ESO - Thesis Topic: Black hole accretion versus star burst episodes: what is

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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... 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. ...

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... Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Extragalactic 30 Hours 2 hours The HI Properties of Dwarf Galaxies Hosting Massive Black Holes While black hole (BHs) inhabit the centers of essentially all massive bulge-dominated galaxies, the prevalence of BHs in dwarf galaxies is still unknown. ... We propose to explore the role of AGN feedback on the HI content of low mass galaxies. ...

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• http://www.naic.edu/vscience/schedule/tpfiles/GehatagA2936tp.ps
• http://www.naic.edu/vscience/schedule/2015Spring/GehatagA2936.pdf
• http://www.naic.edu/~astro/frontiers/NewScieComa_Apr07.pdf

Smithsonian Astrophysical Observatory | Center for Astrophysics | Smithsonian Institution | XRB SED Home | . RXTE Light Curves (And tables of SED observation times where available): . LMC X-1 . LMC X-3 . Microquasar LS 5039 . Cyg X-1 . Cyg X-3 . SEDs: . Microquasar LS 5039 . Cygnus X-1/V1357Cyg . Cygnus X-3 .

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• Black Hole X-ray Binaries with Low Mass Companions
• dictionary
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A collapsed black hole in two­dimensional space­time F. Vendrell 1 Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, U.K. An imploding shell of radiation is shown to create a 2­D black hole within the framework of the ``R = T '' theory. ... 2 The collapsing shell In a two­dimensional space­time we define: ffl (x 0 ; x 1 ) = conformal global coordinates; x \Sigma = x 0 \Sigma x 1 . ... 3 Systems of coordinates ffl The coordinates y I and yE are defined for x \Gamma ? ...

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• Abstract
• Accessing measurement set data Bojan Nikolic web pages (r. 329)