activity
20082020
most citedA connection between star formation activity and cosmic rays in the starburst galaxy M 82

270 citations · 5.5k across the 96 of their papers we have counts for

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Showing astro-ph.HEShow all

77 papers · 1 filter

astro-ph.HE2019★ 8 cited

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…

astro-ph.HE2017★ 20 cited

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…

astro-ph.HE2017★ 77 cited

Gamma-ray observations of Tycho's SNR with VERITAS and Fermi

VERITAS Collaboration, S. Archambault, A. Archer +64

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…

astro-ph.HE2017★ 25 cited

A luminous and isolated gamma-ray flare from the blazar B2 1215+30

VERITAS Collaboration, A. U. Abeysekara, S. Archambault +84

B2 1215+30 is a BL Lac-type blazar that was first detected at TeV energies by the MAGIC atmospheric Cherenkov telescopes, and subsequently confirmed by the VERITAS observatory with…

astro-ph.HE2016★ 67 cited

Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009

M. L. Ahnen, S. Ansoldi, L. A. Antonelli +290

We present an extensive study of the BL Lac object Mrk 501 based on a data set collected during the multi-instrument campaign spanning from 2009 March 15 to 2009 August 1 which inc…

astro-ph.HE2016★ 39 cited

A search for spectral hysteresis and energy-dependent time lags from X-ray and TeV gamma-ray observations of Mrk 421

A. U. Abeysekara, S. Archambault, A. Archer +220

Blazars are variable emitters across all wavelengths over a wide range of timescales, from months down to minutes. It is therefore essential to observe blazars simultaneously at di…

astro-ph.HE2016★ 9 cited

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…

astro-ph.HE2016★ 15 cited

Discovery of Very High Energy Gamma Rays from 1ES 1440+122

VERITAS Collaboration, S. Archambault, A. Archer +87

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…

astro-ph.HE2016★ 33 cited

Very High Energy outburst of Markarian 501 in May 2009

E. Aliu, S. Archambault, A. Archer +108

The very high energy (VHE; E 100 GeV) blazar Markarian 501 was observed between April 17 and May 5 (MJD 54938--54956), 2009, as part of an extensive multi-wavelength campaign f…

astro-ph.HE2016★ 18 cited

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…

astro-ph.HE2016★ 38 cited

Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes

S. Archambault, A. Archer, W. Benbow +78

Between the beginning of its full-scale scientific operations in 2007 and 2012, the VERITAS Cherenkov telescope array observed more than 130 blazars; of these, 26 were detected as…

astro-ph.HE2016★ 40 cited

TeV Gamma-ray Observations of The Galactic Center Ridge By VERITAS

A. Archer, W. Benbow, R. Bird +73

The Galactic Center Ridge has been observed extensively in the past by both GeV and TeV gamma-ray instruments revealing a wealth of structure, including a diffuse component as well…

astro-ph.HE2016★ 25 cited

Exceptionally bright TeV flares from the binary LS I +61 303

VERITAS Collaboration, S. Archambault, A. Archer +86

The TeV binary system LS I +61 303 is known for its regular, non-thermal emission pattern which traces the orbital period of the compact object in its 26.5 day orbit around…

astro-ph.HE2015★ 99 cited

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…

astro-ph.HE2015★ 4 cited

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…

astro-ph.HE2015★ 4 cited

Science Highlights from VERITAS

D. Staszak, A. U. Abeysekara, S. Archambault +88

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is a ground-based array located at the Fred Lawrence Whipple Observatory in southern Arizona and is one of the…

astro-ph.HE2015★ 71 cited

First NuSTAR Observations of Mrk 501 within a Radio to TeV Multi-Instrument Campaign

A. Furniss, K. Noda, S. Boggs +273

We report on simultaneous broadband observations of the TeV-emitting blazar Markarian 501 between 1 April and 10 August 2013, including the first detailed characterization of the s…

astro-ph.HE2015

On the Spectral Shape of Gamma-ray Pulsars Above the Break Energy

Christopher Bochenek, Andrew McCann

It is well known that, for bright gamma-ray pulsars with high statistics above a few GeV, the phase averaged spectral energy distribution (SED) is harder than a simple exponential…

astro-ph.HE2015★ 3 cited

Pulsar Emission above the Spectral Break - A Stacked Approach

Andrew McCann

NASA's Fermi space telescope has provided us with a bountiful new population of gamma-ray sources following its discovery of 150 new gamma-ray pulsars. One common feature exhibited…

astro-ph.HE2014★ 22 cited

A Search for Pulsations from Geminga Above 100 GeV with VERITAS

E. Aliu, S. Archambault, A. Archer +81

We present the results of 71.6 hours of observations of the Geminga pulsar (PSR J0633+1746) with the VERITAS very-high-energy gamma-ray telescope array. Data taken with VERITAS bet…

astro-ph.HE2014★ 46 cited

Investigating Broadband Variability of the TeV Blazar 1ES 1959+650

E. Aliu, S. Archambault, T. Arlen +92

We summarize broadband observations of the TeV-emitting blazar 1ES 1959+650, including optical R-band observations by the robotic telescopes Super-LOTIS and iTelescope, UV observat…

astro-ph.HE2014★ 133 cited

Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010

The MAGIC Collaboration, J. Aleksić, S. Ansoldi +251

A flare from the TeV blazar Mrk 421, occurring in March 2010, was observed for 13 consecutive days from radio to very high energy (VHE, E > 100 GeV) gamma-rays with MAGIC, VERITAS,…

astro-ph.HE2014★ 24 cited

A stacked analysis of 115 pulsars observed by the Fermi LAT

A. McCann

Due to the low gamma-ray fluxes from pulsars above 50 GeV and the small collecting area of space-based telescopes, the gamma-ray emission discovered by the Fermi-LAT in 150 p…

astro-ph.HE2014★ 29 cited

VERITAS Observations of the BL Lac Object PG 1553+113

E. Aliu, A. Archer, T. Aune +84

We present results from VERITAS observations of the BL Lac object PG 1553+113 spanning the years 2010, 2011, and 2012. The time-averaged spectrum, measured between 160 and 560\,GeV…