... 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....

... GRO J1655 40: Evidence for a Spinning 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. ... What physical mechanisms actually cause the flickering -- and a slower quasi-periodic oscillation (QPO) -- in accretion disks surrounding black holes and neutron stars remains a topic of much research. ... Publications with keywords: black hole - accretion disk . ... Binary Black Hole in 3C 75 . ...

... 2006 May 28 . GRO J1655-40: Evidence for a Spinning 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 . Studies of the bright light emitted by the swirling gas frequently indicate not only that a black hole is present, but also likely attributes. The gas surrounding GRO J1655-40, for example, has been found to display an unusual flickering at a rate of 450 times a second. ... About APOD | ...

... Tonight's Sky . ... Observing . ... Behemoth black hole found in an unlikely place . ... black holes . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Do black holes stretch or rip the fabric of space-time? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Castelvecchi, D. "A New Breed of Black Hole" in Sky Telescope , Apr. 2006, p. 36. ... Charles, P. Wagner, R. "Black Holes in Binary Stars: Weighing the Evidence" in Sky Telescope , May 1996, p. 38. ... Nadis, S. "The Secret Lives of Black Holes" in Astronomy , Nov. 2007, p. 28. ... Nadis, S. "Black Holes: Seeing the Unseeable" in Astronomy , Apr. 2007, p. 26. ...

... 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. ...

Blackholes Forum Message . ... Can Black Holes Create Space Time? ... Quasar jet streams (QJS) have been exhibiting Faster than light motion since they were first discovered by radio astronomy a long time ago. ... But what if Black holes were creating Space time, what if a relationship between matter energy and space time exists, in a conundrum what can matter exist in, it can exist in side of it's self, how about this as a hypothesis, can black holes create space time? ... www.astronomy.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. ...

... 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. ...

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... CSIRO Radio Astronomy Image Archive . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Australia Telescope National Facility Colloquium . ...

... 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. ...

... 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. ...

... 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. ...

... 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. ...

ALBUM: love Author: The Cult Album title: Love @ SONG : Nirvana I float through day and nite life most of the time Till I hung up my blues on a nail on your wall It rained flowers when the music began Love all around when the music is loud Every day Nirvana Always this way I wish every day was like nirvana Always this way I'm not looking for girls or cheap thrills and pills Always this way I wish every day was like nirvana Always this ...

... 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. ...

... STFC/JBO/MERLIN Fatal Beauty This composite image (about 180 000 light years across) shows the jet from the black hole at the centre of one galaxy striking another galaxy, the first time such an interaction has been found. ... The proximity of the two galaxies (around twenty thousand light years, about the same distance Earth is from the centre of the Milky Way) means that any planetary systems in the path of the deadly jet are likely to have been destroyed. ...

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 ? ...

... 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 . ...

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 . ...