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Gamma-ray observations of tycho’s supernova remnant with veritas andfermi
(American Astronomical Society, 2017-02-06)
High-energy gamma-ray emission from supernova remnants (SNRs) has provided a unique perspective for studies of Galactic cosmic-ray acceleration. Tycho's SNR is a particularly good target because it is a young, type Ia SNR ...
Dark matter constraints from a joint analysis of dwarf spheroidal galaxy observations with veritas
(American Physical Society (APS), 2017-04-05)
We present constraints on the annihilation cross section of weakly interacting massive particles dark matter based on the joint statistical analysis of four dwarf galaxies with VERITAS. These results are derived from an ...
Search for magnetically broadened cascade emission from blazars with veritas
(American Astronomical Society, 2017-02-02)
We present a search for magnetically broadened gamma-ray emission around active galactic nuclei (AGNs), using VERITAS observations of seven hard-spectrum blazars. A cascade process occurs when multi-TeV gamma-rays from an ...
Discovery of very high energy gamma rays from 1es 1440+122
(Oxford University Press (OUP), 2016-06-08)
The BL Lacertae object 1ES 1440+ 122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and ...
Very high energy observations of the binaries v 404 cyg and 4u 0115+634 during giant x-ray outbursts
(American Astronomical Society, 2016-10-31)
Transient X-ray binaries produce major outbursts in which the X-ray flux can increase over the quiescent level by factors as large as 10(7). The low-mass X-ray binary V 404 Cyg and the high-mass system 4U 0115+634 underwent ...
Observations of the shell-type supernova remnant cassiopeia a at tev energies with veritas
(IOP Publishing, 2010-04-08)
We report on observations of very high energy gamma rays from the shell-type supernova remnant (SNR) Cassiopeia A with the Very Energetic Radiation Imaging Telescope Array System stereoscopic array of four imaging atmospheric ...
Discovery of a new tev gamma-ray source: ver j0521+211
(IOP Publishing, 2013-09-27)
We report the detection of a new TeV gamma-ray source, VER J0521+211, based on observations made with the VERITAS imaging atmospheric Cherenkov Telescope Array. These observations were motivated by the discovery of a cluster ...
Test of models of the cosmic infrared background with multiwavelength observations of the blazar 1es 1218+30.4 in 2009
(IOP Publishing, 2014-06-04)
We present the results of a multi-wavelength campaign targeting the blazar 1ES 1218+30.4 with observations with the 1.3 m McGraw-Hill optical telescope, the Rossi X-ray Timing Explorer (RXTE), the Fermi Gamma-Ray Space ...
Multiwavelength study of quiescent states of mrk 421 with unprecedented hard x-ray coverage provided bynustarin 2013
(American Astronomical Society, 2016-03-09)
We present coordinated multiwavelength observations of the bright, nearby BL Lacertae object Mrk 421 taken in 2013 January-March, involving GASP-WEBT, Swift, NuSTAR, Fermi-LAT, MAGIC, VERITAS, and other collaborations and ...
Gamma-ray observations under bright moonlight with veritas
(Elsevier BV, 2017-05-01)