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154 papers · 1 filter

astro-ph.IM2011★ 274 cited

New air fluorescence detectors employed in the Telescope Array experiment

H. Tokuno, Y. Tameda, M. Takeda +134

Since 2007, the Telescope Array (TA) experiment, based in Utah, USA, has been observing ultra high energy cosmic rays to understand their origins. The experiment involves a surface…

cond-mat.other2011★ 58 cited

Quantum Stress: Density Functional Theory Formulation and Physical Manifestation

Hao Hu, Zhengfei Wang, Junyi Zhu +5

The concept of "quantum stress (QS)" is introduced and formulated within density functional theory (DFT), to elucidate extrinsic electronic effects on the stress state of solids an…

astro-ph.CO2011★ 68 cited

VERITAS Observations of day-scale flaring of M87 in 2010 April

E. Aliu, T. Arlen, T. Aune +88

VERITAS has been monitoring the very-high-energy (VHE; >100GeV) gamma-ray activity of the radio galaxy M87 since 2007. During 2008, flaring activity on a timescale of a few days wa…

math.RT2011★ 8 cited

Simultaneous unitary equivalences

Tatiana G. Gerasimova, Roger A. Horn, Vladimir V. Sergeichuk

Let A, B, C, D be given finite sets of pairs of n-by-n complex matrices. We describe an algorithm to determine, with finitely many computations, whether there is a single unitary m…

astro-ph.CO2011★ 8 cited

M94 As A Unique Testbed for Black Hole Mass Estimates and AGN Activity At Low Luminosities

Anca Constantin, Anil Seth

We discuss the peculiar nature of the nucleus of M94 (NGC 4736) in the context of new measurements of the broad H_alpha emission from HST-STIS observations. We show that this compo…

hep-lat2011★ 9 cited

B and D meson decay constants from 2+1 flavor improved staggered simulations

E. T. Neil, Jon A. Bailey, A. Bazavov +21

We give an update on simulation results for the decay constants f_B, f_{B_s}, f_D and f_{D_s}. These decay constants are important for precision tests of the standard model, in par…