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Messier 53
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Title: The Blue Straggler population in the globular cluster M53 (NGC5024): a combined HST, LBT, CFHT study Authors: G. Beccari, B.Lanzoni, F.R. Ferraro, L.Pulone, M.Bellazzini, F.Fusi Pecci, R.T.Rood, E.Giallongo, R.Ragazzoni, A.Grazian, A.Baruffolo, N.Bouche, P.Buschkamp, C.De Santi...
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Andromeda II
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Stream of stars in Andromeda satellite galaxy shows cosmic collision The Andromeda Galaxy is surrounded by a swarm of small satellite galaxies. Researchers from the Niels Bohr Institute, among others, have detected a stream of stars in one of the Andromeda Galaxys outer satellite galaxies, a dwa...
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SDSS J114657.79+403708.6
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Title: SDSS J114657.79+403708.6: the third most distant blazar at z=5.0 Author: G. Ghisellini (1), T. Sbarrato (1,2,3), G. Tagliaferri (1), L. Foschini (1), F. Tavecchio (1), G. Ghirlanda (1), V. Braito (1), N. Gehrels (4) ((1) INAF-Osservatorio di Brera, (2) Univ. dell'Insubria, (3) ESO Garch...
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Quasar MR2251-178
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Title: Chandra LETGS spectroscopy of the Quasar MR2251-178 and its warm absorber Authors: J.M. Ramírez (1), S. Komossa (1), V. Burwitz (1), S. Mathur (2) ((1) Max-Planck-Institut für extraterrestriche Physik, Garching, Germany, (2) Department of Astronomy, Ohio State University, Columbus)...
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Galaxy Formation
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Title: Unveiling obscured accretion in the Chandra Deep Field South Authors: F. Fiore, A. Grazian, P. Santini, S. Puccetti, M. Brusa, C. Feruglio, A. Fontana, E. Giallongo, A. Comastri, C. Gruppioni, F. Pozzi, G. Zamorani, C. Vignali A large population of heavily obscured, Compton Thick AGNs is p...
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Norma cluster
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Title: The Norma cluster (ACO3627) -- III. The Distance and Peculiar Velocity via the Near-Infrared Ks-band Fundamental Plane Author: T. Mutabazi, S. L. Blyth, P. A. Woudt, J. R. Lucey, T. H. Jarrett, M. Bilicki, A. C. Schroder, S. A. W. Moore (Version, v2) While Norma (ACO3627) is the richest clust...
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Quasar Q0957+561
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Resuelven el misterio del brillo del cuásar gemelo Las variaciones en el brillo del cuásar Q0957+561, conocido como el "cuásar gemelo" debido a que su imagen llega duplicada a la Tierra, son intrínsecas al propio astro y no son causadas por efectos de la gravedad de posibles planetas o es...
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RX J1532.9+3021
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RX J1532.9+3021: Extreme Power of Black Hole Revealed Astronomers have used NASA's Chandra X-ray Observatory and a suite of other telescopes to reveal one of the most powerful black holes known. The black hole has created enormous structures in the hot gas surrounding it and prevented trillions o...
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Universe Dark Ages
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Title: 100 million years after the Big Bang Authors: Jeremy Mould Dark Energy Camera on the Blanco 4 meter telescope not only has the focal plane size the 4 meters were built for, but also has excellent near infrared response. A DECam Deep Fields program is outlined, which can reach M* galaxies at reds...
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4U 1630-47
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Title: Doppler-shifted lines revealing baryons in the jets of the X-ray binary 4U 1630-47. Author: S. Migliari, M. Diaz, J. Miller-Jones, W. Broderic, T. Tzioumis We report the detection of Doppler-shifted X-ray emission lines from the black hole X-ray binary 4U1630-47, coincident with the rea...
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NGC 1672
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This NASA Hubble Space Telescope view of the nearby barred spiral galaxy NGC 1672 unveils details in the galaxys star-forming clouds and dark bands of interstellar dust. NGC 1672 is more than 60 million light-years away in the direction of the southern constellation Dorado. These observations of...
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NGC 3621
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Title: A Chandra view of NGC 3621: a bulgeless galaxy hosting an AGN in its early phase? Authors: M. Gliozzi (1), S. Satyapal (1), M. Eracleous (2), L. Titarchuk (1), C.C. Cheung (3) ((1) GMU, (2) PSU, (3) NASA GSFC) We report the detection of a weak X-ray point source coincident with the nucleus of the b...
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NGC 765
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Title: NGC 765 - A disturbed H I giant Authors: A. M. Portas, E. Brinks, M. E. Filho, A. Usero, E. M. Dyke, P.-E. Belles We present Hi spectral line and radio-continuum VLA data of the galaxy NGC 765, complemented by optical and Chandra X-ray maps. NGC 765 has the largest Hi-to-optical ratio known to dat...
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GRB 080913
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At 06:46:54 UT, 13th Sept, 2008 the Swift Burst Alert Telescope (BAT) detected a distant gamma ray burst, GRB 080913. The reported redshift estimate is z = 6.44 ± 0.3, which makes it the most distant gamma ray burst ever detected. Position(2000): RA = 04h 22m 54.72s, Dec = -25d 07' 46.0" [u...
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Weyl curvature hypothesis
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The Weyl curvature hypothesis, which arises in the application of Albert Einstein's general theory of relativity to physical cosmology, was introduced by the British mathematician and theoretical physicist Sir Roger Penrose in an article in 1979[1] in an attempt to provide explanations for tw...
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