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CID 1711 and CID 3083
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CID 1711 and CID 3083: Close Encounters of the Galactic Kind Astronomers have used a large survey to test a prediction that close encounters between galaxies can trigger the rapid growth of supermassive black holes. Key to this work was Chandra's unique ability to pinpoint actively growing black h...
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Universe is Bigger
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That intergalactic road trip to Triangulum is going to take a little longer than you had planned. An Ohio State University astronomer and his colleagues have determined that the Triangulum Galaxy,...
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Dirac-Milne universe
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Title: Introducing the Dirac-Milne universe Authors: Aurélien Benoit-Lévy, Gabriel Chardin The \Lambda CDM standard model, although an excellent parameterisation of the present cosmological data, requires two as yet unobserved components, Dark Matter and Dark Energy, for more than 95% of t...
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Ultra faint dwarf galaxies
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Title: The Stellar Populations and Structural Properties of Ultra Faint Dwarf Galaxies, Canes Venatici I, Bootes I, Canes Venatici II, and Leo IV Authors: Sakurako Okamoto, Nobuo Arimoto, Yoshihiko Yamada, Masato Onodera We take deep images of four ultra faint dwarf (UFD) galaxies, Canes Venat...
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Stellar tidal disruption flares
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Astrophysicists Find Evidence of Black Holes Destruction of Stars Astrophysicists have found evidence of black holes destroying stars, a long-sought phenomenon that provides a new window into general relativity. The research, reported in the latest issue of the Astrophysical Journal, also...
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Light
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Light may be a direct result of small violations of relativity (Lorentz and CPT violation), according to new research.
Professor Alan Kostelecky o...
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1ES 0229+200
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Title: 1ES 0229+200 Authors: S. Kaufmann, S.J. Wagner, O. Tibolla, M. Hauser The blazar 1ES 0229+200 is a high frequency peaked BL Lac object with a hard TeV spectrum extending to 10 TeV. Its unusual spectral characteristics make it a frequently used probe for intergalactic radiation and magnetic...
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Six Ly-alpha Blobs
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Title: Filamentary Large Scale Structure Traced by Six Ly-alpha Blobs at z=2.3 Authors: Dawn K. Erb, Milan Bogosavljevic, Charles C. Steidel Extended nebulae of Ly-alpha emission ("Ly-alpha blobs") are known to be associated with overdense regions at high redshift. Here we present...
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Magnetohydrodynamical simulations
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Title: A robust numerical scheme for highly compressible magnetohydrodynamics: Nonlinear stability, implementation and tests Authors: Knut Waagan, Christoph Federrath, Christian Klingenberg (Version v4) The ideal MHD equations are a central model in astrophysics, and their solution rel...
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Abell 70
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Title: A barium-rich binary central star in Abell 70 Authors: Henri M. J. Boffin, B. Miszalski, D. J. Frew, A. Acker, J. Köppen, A. F. J. Moffat, Q. A. Parker We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. Th...
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WNL Star FSZ35
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Title: Spectral Study of the WNL Star FSZ35 in the M33 Galaxy Authors: Olga Maryeva, Pavel Abolmasov We study and analyse low-resolution spectra of the unordinary late WN star FSZ35 in M33. We classify the object as a hydrogen-rich WN8 star. Using the radiative transfer code CMFGEN, we determine th...
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SCUBA Galaxies
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A major breakthrough in pinpointing some of the most primordial and violently star forming galaxies in the Universe has been made by a joint collaboration of UK and US astronomers using the Spitzer Space Telescope to resolve primordial galaxies initially detected by the James Clerk Maxwell teles...
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Markarian 501
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Title: Observations of Mrk 421 and Mrk 501 in Spring 2006 with VERITAS Authors: S.J. Fegan (for the VERITAS Collaboration) VERITAS, the Very Energetic Radiation Telescope Imaging Array System, is an array of four imaging Atmospheric Cherenkov telescopes in southern Arizona. It is sensitive to g...
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The Millennium Run
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One of the biggest computer simulations ever run is illuminating the deepest mysteries of the universe
The simulation by an international team is the biggest ever attempted and shows how structures in the Universe changed and grew over billions of years.
The Millen...
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Leo II Group
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Title: Leo II Group: decoupled cores of NGC 3607 and NGC 3608
Authors: Victor L. Afanasiev, Olga K. Sil'chenko ((1) Special Astrophysical Observatory of the Russian Academy of Sciences, (2) Sternberg Astronomical Institute of the Moscow State University)
The kinematics...
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