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- University of ChicagoUS169 papers
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5 papers · 2 filters
The Sudden Death of the Nearest Quasar
Kevin Schawinski, Daniel A. Evans, Shanil Virani +13
Galaxy formation is significantly modulated by energy output from supermassive black holes at the centers of galaxies which grow in highly efficient luminous quasar phases. The tim…
VERITAS Search for VHE Gamma-ray Emission from Dwarf Spheroidal Galaxies
The VERITAS Collaboration, V. A. Acciari, T. Arlen +73
Indirect dark matter searches with ground-based gamma-ray observatories provide an alternative for identifying the particle nature of dark matter that is complementary to that of d…
VERITAS 2008 - 2009 monitoring of the variable gamma-ray source M87
The VERITAS Collaboration, V. A. Acciari, E. Aliu +84
M87 is a nearby radio galaxy that is detected at energies ranging from radio to VHE gamma-rays. Its proximity and its jet, misaligned from our line-of-sight, enable detailed morpho…
The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release
Donald P. Schneider, Gordon T. Richards, Patrick B. Hall +45
We present the fifth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog, which is based upon the SDSS Seventh Data Release. The catalog, which contains 105,783 spectrosc…
Galaxy Zoo: Bars in Disk Galaxies
Karen L. Masters, Robert C. Nichol, Ben Hoyle +8
We present first results from Galaxy Zoo 2, the second phase of the highly successful Galaxy Zoo project (www.galaxyzoo.org). Using a volume-limited sample of 13665 disk galaxies (…