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Quasar 2023+335
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Milky Way Gas Cloud Causes Multiple Images of Distant Quasar For the first time, astronomers have seen the image of a distant quasar split into multiple images by the effects of a cloud of ionised gas in our own Milky Way Galaxy. Such events were predicted as early as 1970, but the first evidence for one...
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Short radio bursts
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Radio Bursts Discovered From Beyond our Galaxy Astronomers, including a team member from NASA's Jet Propulsion Laboratory in Pasadena, Calif., have detected the first population of radio bursts known to originate from galaxies beyond our own Milky Way. The sources of the light bursts are unknow...
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G1.9+0.3
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Title: The Youngest Galactic Supernova Remnant: G1.9+0.3 Authors: S.P. Reynolds, K.J. Borkowski, D.A. Green, U. Hwang, I. Harrus, R. Petre (Version v2) Our 50 ks Chandra observation of the small radio supernova remnant (SNR) G1.9+0.3 shows a complete shell structure with strong bilateral symm...
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Abell 2443
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Title: Chandra View of the Ultra-Steep Spectrum Radio Source in Abell 2443: Merger Shock-Induced Compression of Fossil Radio Plasma? Authors: T. E. Clarke, S. W. Randall, C. L. Sarazin, E. L. Blanton, S. Giacintucci We present a new Chandra X-ray observation of the intracluster medium in the gala...
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Abell 2029
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Title: X-ray observations of the galaxy cluster Abell 2029 to the virial radius Authors: S. A. Walker, A. C. Fabian, J. S. Sanders, M. R. George, Y. Tawara We present Suzaku observations of the galaxy cluster Abell 2029, which exploit Suzaku's low particle background to probe the ICM to radii beyond...
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Interacting Galaxies
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Title: The Spitzer Spirals, Bridges, and Tails Interacting Galaxy Survey: Interaction-Induced Star Formation in the Mid-Infrared
Authors: Beverly J. Smith (ETSU), C. Struck (ISU), M. Han**** (ETSU), P. N. Appleton (SSC), V. Charmandaris (UCrete), W. T. Reach (SSC)
We p...
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GRB 060614
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Title: A new class of gamma-ray bursts from stellar disruptions by intermediate mass black holes Authors: H.Gao, Y.Lu, S.N.Zhang It has been argued that the long gamma-ray burst (GRB) of GRB 060614 without an associated supernova (SN) has challenged the current classification and fuel model for...
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SN2003gd
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When the universe was only 700 million years old, some of its galaxies were already filled with lots of dust. But where did all of this dust come from? Astronomers using NASA's Spitzer Space Telescope think they may have found the source in type II supernovae, the violent explosions of the universe's...
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Black Hole Universe
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Title: Black Hole Universe: Time Evolution Authors: Chul-Moon Yoo, Hirotada Okawa, Ken-ichi Nakao Time evolution of a black hole lattice universe is simulated. The vacuum Einstein equations in a cubic box with a black hole at the origin are numerically solved with periodic boundary conditions o...
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Suzaku J1759-3450
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Title: A New Cluster of Galaxies towards the Galactic Bulge, Suzaku J1759-3450 Authors: Hideyuki Mori, Yoshítomo Maeda, Akihiro Furuzawa, Yoshíto Haba, Yoshíhiro Ueda We observed an extended X-ray source designated as Suzaku J1759-3450 with the Suzaku and Chandra observations towards 1RXS J...
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Galaxy cluster A76
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Title: Suzaku observations of the low surface brightness cluster A76 Authors: N. Ota, Y. Fujino, Y. Ibaraki, H. Boehringer, G. Chon Context: We present results of Suzaku observations of a nearby galaxy cluster A76 at z=0.0395. This cluster is characterised by extremely low X-ray surface brightn...
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M94 Group
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The M94 Group (Canes Venatici I Group) is a loose, extended group of galaxies located about 13 million light-years away in the constellations Canes Venatici and Coma Berenices. The group is one of many groups that lies within the Virgo Supercluster (i.e. the Local Supercluster) and one of the close...
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Cosmological natural selection
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Did the universe evolve to make black holes? The maths underpinning Darwin's theory of natural selection could explain how the universe may be 'designed' to make black holes. New Oxford University research builds on the 'cosmological natural selection hypothesis' - an idea first put forward in t...
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Quasar 3C273
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When a pair of researchers aimed the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope toward a famous quasar, they sought evidence to support a popular theory for why the superfast jets of particles streaming from quasars are confined to narrow streams. Instead, the...
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Galaxy Colour Gradients
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Title: Colour Gradients in Galaxies Out to z~3: Dependence on Galaxy Properties Authors: Niraj Welikala (IAS, Orsay), Jean-Paul Kneib (LAM) Using HST/ACS observations, we measure the colour gradients of 3248 galaxies in the GOODS-South field out to z~3 and i_{AB}<25.5 and characterize the...
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