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Blazar 3C 279
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Title: Multifrequency Observations of the Blazar 3C 279 in January 2006 Authors: WEBT Collaboration: W. Collmar, M. Böttcher, T. Krichbaum, E. Bottacini, V. Burwitz, A. Cucchiara, D. Grupe, M. Gurwell, P. Kretschmar, K. Pottschmidt, M. Bremer, S. Leon, H. Ungerechts, P.Giommi, M. Capalbi We re...
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Phoenix Cluster
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Phoenix Cluster Sets Record Pace at Forming Stars Stars are forming in the Phoenix cluster at the highest rate ever observed for the middle of a galaxy cluster. The object also is the most powerful producer of X-rays of any known cluster and among the most massive. The data also suggest the rate of hot g...
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NGC2782
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Astronomers have discovered a population of what appear to be young star clusters where they aren't supposed to be. The newborn stars appear to have formed in the debris of the NGC 2782 galaxy collision -- debris that lacks what astronomers believe are some important ingredients needed to f...
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3XMM J150052.0+015452
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XJ1500+0154: Black Hole Meal Sets Record for Length and Size A trio of X-ray observatories has captured a remarkable event in their data: a decade-long binge by a black hole almost two billion light years away. This discovery was made using data from NASA's Chandra X-ray Observatory, Swift Observa...
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NGC 2903
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Title: LCDM Satellites and HI Companions - The Arecibo ALFA Survey of NGC 2903 Authors: J. A. Irwin, G. L. Hoffman, K. Spekkens, M. P. Haynes, R. Giovanelli, S. M. Linder, B. Catinella, E. Momjian, B. S. Koribalski, J. Davies, E. Brinks, W. J. G. de Blok, M. E. Putman, W. van Driel We have conducted a deep...
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Arp 273
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A galactic rose highlights Hubble's 21st anniversary In celebration of the 21st anniversary of the Hubble Space Telescope's deployment into space, astronomers pointed Hubble at an especially photogenic group of interacting galaxies called Arp 273. This image, taken by the NASA/ESA Hubble Spa...
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Monopole
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Title: A monopole near a black hole Authors: Claudio Bunster and Marc Henneaux A striking property of an electric charge near a magnetic pole is that the system possesses angular momentum even when both the electric and the magnetic charges are at rest. The angular momentum is proportional to the pr...
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Abell 3411 and 3412
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Astronomers Discover Powerful Cosmic Double Whammy Using data from NASA's Chandra X-ray Observatory and several other telescopes, astronomers have discovered a cosmic one-two punch unlike any ever seen in a pair of colliding galaxy clusters called Abell 3411 and Abell 3412. This result, descr...
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Chandra Deep Field South
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Chandra Deep Field South : Deepest X-ray Image Ever Reveals Black Hole Treasure Trove This is the deepest X-ray image ever obtained, made with over 7 million seconds of observing time with NASA's Chandra X-ray Observatory. These data give astronomers the best look yet at the growth of black holes ov...
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NGC 7331
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Title: Optical Spectroscopy of the environment of a ULX in NGC 7331 Authors: Pavel K. Abolmasov, Douglas A. Swartz, S. Fabrika, Kajal K. Ghosh, O. Sholukhova, Allyn F. Tennant Optical photometric and spectroscopic data are presented that show an association of an ultraluminous X-ray source in NG...
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Messier 82
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Scientists using the Rossi X-ray Timing Explorer have found a star orbiting a medium-sized black hole - a theorised "in-between" category of black hole that has eluded confirmation for more than a decade.
With the discovery of the star and its orbital period, scientists are now one step away fr...
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Arp 147
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Arp 147: Giant Ring of Black Holes Credit X-ray: NASA/CXC/MIT/S.Rappaport et al Just in time for Valentine's Day comes a new image of a ring -- not of jewels -- but of black holes. This composite image of Arp 147, a pair of interacting galaxies located about 430 million light years from Earth, show...
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M31N 2008-12a
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Title: A remarkable recurrent nova in M31 - The optical observations Author: M. J. Darnley (1), S. C. Williams (1), M. F. Bode (1), M. Henze (2), J.-U. Ness (2), A. W. Shafter (3), K. Hornoch (4), V. Votruba (4) ((1) Astrophysics Research Institute, Liverpool John Moores University, UK, (2) European...
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Magnetar
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First optical signals spied from dead star Astronomers believe they have spotted an aurora around of one of the densest objects in the Universe. In the first observation of its kind, researchers say that they have seen optical light from a magnetar, an extremely dense, dying neutron star with a very...
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15
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OJ 287
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Title: OJ 287 binary black hole system Authors: Mauri Valtonen, Stefano Ciprini The light curve of the quasar OJ 287 extends from 1891 up today without major gaps. Here we summarise the results of the 2005 - 2010 observing campaign. The main results are the following: (1) The 2005 October optical out...
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