239 citations · 1.4k across the 29 of their papers we have counts for
31 papers
A Multiwavelength Interpretation of HESS J1857+026 Emission Using the Fermi-LAT, VERITAS, and HAWC Observatories
Jordan Eagle, Yu Chen, Ramiro Torres-Escobedo +2
We present a new study on the MeV-TeV gamma-ray origin of HESS J1857+026 using data collected from the Fermi-LAT, VERITAS, and HAWC observatories. A spatial and spectral study of H…
The exceptional 2017 gamma-ray flare of the radio galaxy NGC 1275: VERITAS and Multiwavelength Observations
A. Acharyya, A. Archer, P. Bangale +66
The radio galaxy NGC 1275 is the Brightest Cluster Galaxy in the Perseus cluster. It is well-studied across all wavebands, including Very High Energy (VHE; E>100GeV gamma-rays, and…
PIC simulations of nonrelativistic high-Mach-number oblique shocks propagating in a turbulent medium
Karol Fulat, Eloise Moore, Mahmoud Alawashra +4
Collisionless shocks are common in astrophysical systems and stand as sites of particle acceleration. While particles at perpendicular shocks may not return to the upstream region,…
Investigation of the Microquasar SS 433 with VERITAS
The VERITAS Collaboration, A. Archer, P. Bangale +57
Microquasars such as SS 433 are considered potential contributors to cosmic rays up to the knee of the cosmic ray energy spectrum (), where a transition in the…
Cosmic rays: constraints from future MeV detectors
Giada Peron, Sarah Recchia, Stefano Menchiari +4
Cosmic rays are charged energetic particles that permeate the interstellar medium. Their sizeable energy share and penetration power makes them essential players in the dynamical a…
MeV cosmic-ray electrons modify the TeV pair-beam plasma instability
Mahmoud Alawashra, Yuanyuan Yang, Christopher M. Hirata +2
Relativistic pair beams created in the intergalactic medium (IGM) by TeV gamma rays from blazars are expected to produce a detectable GeV-scale electromagnetic cascade, but the cas…
Radio polarization from runaway star bowshocks-I. The general case
M. V. del Valle, R Santos-Lima, M Pohl
High velocity stars move through the interstellar medium with V > 30 km/s. When the star has powerful winds, under the appropriate conditions, the interaction of the wind with the…
An in-depth study of Gamma rays from the Starburst Galaxy M 82 with VERITAS
Atreya Acharyya, Colin B. Adams, Priyadarshini Bangale +60
Assuming Galactic cosmic rays originate in supernovae and the winds of massive stars, starburst galaxies should produce very-high-energy (VHE; E100 GeV) gamma-ray emission via t…
AM: An Open-Source Tool for Time-Dependent Lepto-Hadronic Modeling of Astrophysical Sources
Marc Klinger, Annika Rudolph, Xavier Rodrigues +6
We present the AM ("Astrophysical Multi-Messenger Modeling") software. AM is a documented open source software that efficiently solves the coupled integro-differential equa…
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…
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…
Very-high-energy observations of the binaries V 404 Cyg and 4U 0115+634 during giant X-ray outbursts
A. Archer, W. Benbow, R. Bird +62
Transient X-ray binaries produce major outbursts in which the X-ray flux can increase over the quiescent level by factors as large as . The low-mass X-ray binary V 404 Cyg an…
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 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…
Constraints on Very High Energy Emission from GRB 130427A
E. Aliu, T. Aune, A. Barnacka +89
Prompt emission from the very fluent and nearby (z=0.34) gamma-ray burst GRB 130427A was detected by several orbiting telescopes and by ground-based, wide-field-of-view optical tra…
Spatially Resolving the Very High Energy emission from MGRO J2019+37 with VERITAS
VERITAS Collaboration
We present very high energy (VHE) imaging of MGRO J2019+37 obtained with the VERITAS observatory. The bright extended () unidentified Milagro source is located towar…
A Three-Year Multi-Wavelength Study of the Very High Energy Gamma-ray Blazar 1ES 0229+200
E. Aliu, S. Archambault, T. Arlen +83
The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Gamma ~ 2.5), very-high-energy-emitting (E > 100 GeV) gamma-ray blaza…
Discovery of a new TeV gamma-ray source: VER J0521+211
VERITAS Collaboration, S. Archambault, T. Arlen +83
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…
Discovery of TeV Gamma-ray Emission Toward Supernova Remnant SNR G78.2+2.1
E. Aliu, S. Archambault, T. Arlen +97
We report the discovery of an unidentified, extended source of very-high-energy (VHE) gamma-ray emission, VER J2019+407, within the radio shell of the supernova remnant SNR G78.2+2…
Rapid TeV Gamma-Ray Flaring of BL Lacertae
T. Arlen, T. Aune, M. Beilicke +83
We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flar…
VERITAS Observations of Six Bright, Hard-Spectrum Fermi-LAT Blazars
E. Aliu, S. Archambault, T. Arlen +84
We report on VERITAS very-high-energy (VHE; E>100 GeV) observations of six blazars selected from the Fermi Large Area Telescope First Source Catalog (1FGL). The gamma-ray emission…
Search for a correlation between very-high-energy gamma rays and giant radio pulses in the Crab pulsar
E. Aliu, S. Archambault, T. Arlen +87
We present the results of a joint observational campaign between the Green Bank radio telescope and the VERITAS gamma-ray telescope, which searched for a correlation between the em…
Constraints on Cosmic Rays, Magnetic Fields, and Dark Matter from Gamma-Ray Observations of the Coma Cluster of Galaxies with VERITAS and Fermi
T. Arlen, T. Aune, M. Beilicke +81
Observations of radio halos and relics in galaxy clusters indicate efficient electron acceleration. Protons should likewise be accelerated, suggesting that clusters may also be sou…
Multiwavelength observations of the AGN 1ES 0414+009 with VERITAS, Fermi-LAT, Swift-XRT, and MDM
E. Aliu, S. Archambault, T. Arlen +85
We present observations of the BL Lac object 1ES 0414+009 in the >200 GeV gamma-ray band by the VERITAS array of Cherenkov telescopes. 1ES 0414+009 was observed by VERITAS between…