99 citations · 864 across the 28 of their papers we have counts for
22 papers · 1 filter
Evidence for proton acceleration up to TeV energies based on VERITAS and Fermi-LAT observations of the Cas A SNR
A. U. Abeysekara, A. Archer, W. Benbow +60
We present a study of -ray emission from the core-collapse supernova remnant Cas~A in the energy range from 0.1GeV to 10TeV. We used 65 hours of VERITAS data to cover 200 GeV -…
A decade of multi-wavelength observations of the TeV blazar 1ES 1215+303: Extreme shift of the synchrotron peak frequency and long-term optical-gamma-ray flux increase
Janeth Valverde, Deirdre Horan, Denis Bernard +86
Blazars are known for their variability on a wide range of timescales at all wavelengths. Most studies of TeV gamma-ray blazars focus on short timescales, especially during flares.…
The Great Markarian 421 Flare of February 2010: Multiwavelength variability and correlation studies
A. U. Abeysekara, W. Benbow, R. Bird +256
We report on variability and correlation studies using multiwavelength observations of the blazar Mrk 421 during the month of February, 2010 when an extraordinary flare reaching a…
Probing the Properties of the Pulsar Wind in the Gamma-Ray Binary HESS J0632+057 with NuSTAR and VERITAS Observations
A. Archer, W. Benbow, R. Bird +60
HESS J0632+057 is a gamma-ray binary composed of a compact object orbiting a Be star with a period of about days. Extensive X-ray and TeV gamma-ray observations have revealed…
VERITAS contributions to the 36th International Cosmic Ray Conference
A. U. Abeysekara, A. Archer, W. Benbow +65
Compilation of papers presented by the VERITAS Collaboration at the 36th International Cosmic Ray Conference (ICRC), held July 24 through August 1, 2019 in Madison, Wisconsin.
A Search for Pulsed Very High-Energy Gamma Rays from Thirteen Young Pulsars in Archival VERITAS Data
A. Archer, W. Benbow, R. Bird +58
We conduct a search for periodic emission in the very high-energy gamma-ray band (VHE; E > 100 GeV) from a total of 13 pulsars in an archival VERITAS data set with a total exposure…
Periastron Observations of TeV Gamma-Ray Emission from a Binary System with a 50-year Period
The VERITAS Collaboration, A. U. Abeysekara, W. Benbow +212
We report on observations of the pulsar / Be star binary system PSR J2032+4127 / MT91 213 in the energy range between 100 GeV and 20 TeV with the VERITAS and MAGIC imaging atmosphe…
VERITAS and Fermi-LAT observations of new HAWC sources
VERITAS Collaboration, A. U. Abeysekara, A. Archer +280
The HAWC (High Altitude Water Cherenkov) collaboration recently published their 2HWC catalog, listing 39 very high energy (VHE; >100~GeV) gamma-ray sources based on 507 days of obs…
Measurement of Cosmic-ray Electrons at TeV Energies by VERITAS
VERITAS Collaboration, A. Archer, W. Benbow +58
Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighborhood. CREs lose energy rapidly via synchrotron radiation and inverse-…
The extreme HBL behaviour of Markarian 501 during 2012
M. L. Ahnen, S. Ansoldi, L. A. Antonelli +276
A multiwavelength campaign was organized to take place between March and July of 2012. Excellent temporal coverage was obtained with more than 25 instruments, including the MAGIC,…
Measurement of the Iron Spectrum in Cosmic Rays by VERITAS
The VERITAS collaboration, A. Archer, W. Benbow +55
We present a new measurement of the energy spectrum of iron nuclei in cosmic rays from 20 to 500 TeV. The measurement makes use of a template-based analysis method, which, for the…
VERITAS observations of the BL Lac object TXS 0506+056
A. U. Abeysekara, A. Archer, W. Benbow +57
On 2017 September 22, the IceCube Neutrino Observatory reported the detection of the high-energy neutrino event \icnu, of potential astrophysical origin. It was soon determined tha…
HESS J1943+213: An Extreme Blazar Shining Through The Galactic Plane
The VERITAS Collaboration, A. Archer, W. Benbow +60
HESS J1943+213 is a very-high-energy (VHE; 100 GeV) -ray source in the direction of the Galactic Plane. Studies exploring the classification of the source are converging towa…
A Very High Energy -Ray Survey towards the Cygnus Region of the Galaxy
The VERITAS Collaboration, A. U. Abeysekara, A. Archer +68
We present results from deep observations towards the Cygnus region using 300 hours of very-high-energy (VHE) -ray data taken with the VERITAS Cherenkov telescope array and over…
A strong limit on the very-high-energy emission from GRB 150323A
A. U. Abeysekara, A. Archer, W. Benbow +63
On 2015 March 23, VERITAS responded to a -BAT detection of a gamma-ray burst, with observations beginning 270 seconds after the onset of BAT emission, and only 135 seconds a…
Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
A. U. Abeysekara, W. Benbow, R. Bird +74
Combined with very-long-baseline interferometry measurements, the observations of fast TeV gamma-ray flares probe the structure and emission mechanism of blazar jets. However, only…
Discovery of very-high-energy emission from RGB J2243+203 and derivation of its redshift upper limit
A. U. Abeysekara, S. Archambault, A. Archer +67
Very-high-energy (VHE; 100 GeV) gamma-ray emission from the blazar RGB J2243+203 was discovered with the VERITAS Cherenkov telescope array, during the period between 21 and 24…
Very-High-Energy -Ray Observations of the Blazar 1ES 2344+514 with VERITAS
C. Allen, S. Archambault, A. Archer +79
We present very-high-energy -ray observations of the BL Lac object 1ES 2344+514 taken by the Very Energetic Radiation Imaging Telescope Array System (VERITAS) between 2007 and 2…
A Search for Very High-Energy Gamma Rays from the Missing Link Binary Pulsar J1023+0038 with VERITAS
E. Aliu, S. Archambault, A. Archer +82
The binary millisecond radio pulsar PSR J1023+0038 exhibits many characteristics similar to the gamma-ray binary system PSR B1259--63/LS 2883, making it an ideal candidate for the…
VERITAS and Multiwavelength Observations of the BL Lacertae Object 1ES 1741+196
VERITAS Collaboration, A. U. Abeysekara, S. Archambault +85
We present results from multiwavelength observations of the BL Lacertae object 1ES 1741+196, including results in the very-high-energy -ray regime using the Very Energetic Radia…
Gamma rays from the quasar PKS 1441+25: story of an escape
A. U. Abeysekara, S. Archambault, A. Archer +103
Outbursts from gamma-ray quasars provide insights on the relativistic jets of active galactic nuclei and constraints on the diffuse radiation fields that fill the Universe. The det…
VERITAS Collaboration Contributions to the 34th International Cosmic Ray Conference
The VERITAS Collaboration, A. U. Abeysekara, S. Archambault +90
Compilation of papers presented by the VERITAS Collaboration at the 34th International Cosmic Ray Conference (ICRC), held July 30 through August 6, 2015 in The Hague, The Netherlan…