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Cosmic Interactions
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An image based on data taken with ESO's Very Large Telescope reveals a triplet of galaxies intertwined in a cosmic dance. Credit ESO Position(2000): RA. = 22:02:03.13, Dec = -31:58:25.5 The three galaxies, catalogued as NGC 7173 (top), 7174 (bottom right) and 7176 (bottom left), are located 106 mi...
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NGC 4622
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Astronomers are puzzling over a spiral galaxy whose spiral arms are wrapped in opposing directions. The unusual structure may be a lingering scar from a tussle with a smaller galaxy that was ultimately swallowed. Before astronomers had studied this unusual spiral galaxy, called NGC 4622, they th...
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GRB 070616
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Title: Strong spectral evolution during the prompt emission of GRB 070616 Authors: R.L.C. Starling (University of Leicester, UK) Swift has revealed features in GRB early light curves, such as steep decays and X-ray flares, whose properties are consistent with an internal origin though they are...
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GRB070201
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An international team of physicists, including University of Oregon scientists, has concluded that last February's intense burst of gamma rays possibly coming from the Andromeda Galaxy lacked a gravitational wave. That absence, they say, rules out an initial interpretation that the burst cam...
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ESO 593-IG 008
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Using ESO's Very Large Telescope, an international team of astronomers has discovered a stunning rare case of a triple merger of galaxies. This system, which astronomers have dubbed 'The Bird' - albeit it also bears resemblance with a cosmic Tinker Bell - is composed of two massive spiral galaxies...
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GRB 070125
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A team of astronomers has discovered a cosmic explosion that seems to have come from the middle of nowhere thousands of light-years from the nearest galaxy-sized collection of stars, gas, and dust. This "shot in the dark" is surprising because the type of explosion, a long-duration gam...
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Abell 3128
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Astronomers working with XMM-Newton have discovered a new cluster of galaxies, hidden behind a previously identified cluster of galaxies. The recently exposed cosmic giant is apparently just as bright as the first group, but is six times further away. HI-RES JPG Size: 154 kb X-ray image of th...
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CGCG 049-033
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An intergalactic particle beam stretching for more than a million light years is the longest ever seen. According to the team that discovered this record breaker, it could help reveal how such jets of matter bind themselves together. Jets are seen all over the cosmos squirting out of many different...
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Supernova 2005bl
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Title: The underluminous Type Ia Supernova 2005bl and the class of objects similar to SN 1991bg Authors: S. Taubenberger, S. Hachinger, G. Pignata, P. A. Mazzali, C. Contreras, S. Valenti, A. Pastorello, N. Elias-Rosa, O. Bärnbantner, H. Barwig, S. Benetti, M. Dolci, J. Fliri, G. Folatelli, W. L....
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Ultra-compact nuclear rings
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Title: Discovery of ultra-compact nuclear rings in three spiral galaxies Authors: S. Comerón (1), J. H. Knapen (1), J. E. Beckman (1, 2), I. Shlosman (3) ((1) Instituto de Astrofisica de Canarias, (2) Consejo Superior de Investigaciones Cientificas, (3) University of Kentucky) Ring-shaped mor...
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Acidic Galactic Clouds
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SRON astronomer Floris van der Tak is the first to have observed acidic particulate clouds outside of our own Milky Way galaxy. He did this by focusing the James Clerk Maxwell Telescope, located on Hawaii, on two nearby Milky Way galaxies. Astronomers think that acidification inhibits the formati...
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Large-scale magnetic fields
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Title: Magnetogenesis from Cosmic String Loops Authors: Diana Battefeld, Thorsten Battefeld, Daniel H. Wesley, Mark Wyman (Version v2) Large-scale coherent magnetic fields are observed in galaxies and clusters, but their ultimate origin remains a mystery. We reconsider the prospects for pr...
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Dark Galaxy
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First results from the Arecibo Galaxy Environment Survey (AGES) suggest the discovery of a new dark galaxy. The AGES survey, which started in January 2006, is the most sensitive, large-scale survey of neutral hydrogen to date. Neutral hydrogen is found in most galaxies and it is a key tool in the sea...
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Total mass
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Galactic-cluster X-rays may not come from hot gases Universe could have a fifth less mass than current estimates. If you have ever felt belittled by the amount of stuff in the universe, you might be relieved to find out that it could have 20% less mass than scientists previously thought. According to...
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Lynds 988e
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Title: Spitzer, Near-Infrared, and Submillimeter Imaging of the Relatively Sparse Young Cluster, Lynds 988e Authors: Thomas S. Allen, Judith L. Pipher, Robert A. Gutermuth, S. Thomas Megeath, Joseph D. Adams, Terry L. Herter, Jonathan P. Williams, Jennifer A. Goetz-Bixby, Lori E. Allen, Phil...
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