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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…
VERITAS Collaboration Contributions to the 32nd International Cosmic Ray Conference
The VERITAS Collaboration, E. Aliu, T. Arlen +96
Compilation of papers contributed by the VERITAS Collaboration to the 32nd International Cosmic Ray Conference, held 11-18 August 2011 in Beijing, China.
Semi-Analytic Model for Intergalactic Gamma-Ray Cascades in Extragalactic Magnetic Fields
H. Huan, T. Weisgarber
Primary gamma rays emitted by extragalactic sources, such as blazars, will generate electromagnetic cascades in intergalactic space. These cascades proceed via electron-positron pa…
VERITAS Observations of Gamma-Ray Bursts Detected by Swift
VERITAS Collaboration, V. A. Acciari, E. Aliu +84
We present the results of sixteen Swift-triggered GRB follow-up observations taken with the VERITAS telescope array from January, 2007 to June, 2009. The median energy threshold an…
Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar
VERITAS Collaboration, E. Aliu, T. Arlen +93
We report the detection of pulsed gamma rays from the Crab pulsar at energies above 100 Gigaelectronvolts (GeV) with the VERITAS array of atmospheric Cherenkov telescopes. The dete…
VERITAS Observations of the Unusual Extragalactic Transient Swift J164449.3+573451
E. Aliu, T. Arlen, T. Aune +79
We report on very-high-energy (100 GeV) gamma-ray observations of Swift J164449.3+573451, an unusual transient object first detected by the {\it Swift} Observatory and later det…
Multiwavelength Observations of the VHE Blazar 1ES 2344+514
V. A. Acciari, E. Aliu, T. Arlen +70
Multiwavelength observations of the high-frequency-peaked blazar 1ES2344+514 were performed from 2007 October to 2008 January. The campaign represents the first contemporaneous dat…
TeV and Multi-wavelength Observations of Mrk 421 in 2006-2008
V. A. Acciari, E. Aliu, T. Arlen +103
We report on TeV gamma-ray observations of the blazar Mrk 421 (redshift of 0.031) with the VERITAS observatory and the Whipple 10m Cherenkov telescope. The excellent sensitivity of…
A New Model for Gamma-Ray Cascades in Extragalactic Magnetic Fields
H. Huan, T. Weisgarber, T. Arlen +1
Very-high-energy (VHE, E \gtrsim 100 GeV) gamma rays emitted by extragalactic sources, such as blazars, initiate electromagnetic cascades in the intergalactic medium. The cascade p…
VERITAS Observations of the TeV Binary LS I +61 303 During 2008-2010
V. A. Acciari, E. Aliu, T. Arlen +83
We present the results of observations of the TeV binary LS I +61 303 with the VERITAS telescope array between 2008 and 2010, at energies above 300 GeV. In the past, both ground-ba…
Gamma-ray observations of the Be/pulsar binary 1A 0535+262 during a giant X-ray outburst
VERITAS collaboration, V. A. Acciari, E. Aliu +73
Giant X-ray outbursts, with luminosities of about erg s, are observed roughly every 5 years from the nearby Be/pulsar binary 1A 0535+262. In this article, we pres…
Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
V. A. Acciari, E. Aliu, T. Arlen +82
We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's supernova remnant. Observations performed in the period 2008…