activity
20232026
most citedThe Radio to GeV Afterglow of GRB 221009A

84 citations · 98 across the 16 of their papers we have counts for

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17 papers · 1 filter

astro-ph.HE2026

A Multiwavelength Study of a Long-Duration VHE Flare from BL Lacertae with VERITAS

Atreya Acharyya, Avery Archer, Priyadarshini Bangale +72

We report the first observations of a long-duration very-high-energy (VHE; GeV) flare from BL Lacertae (VER J2202+422), taken with the Very Energetic Radiation Imaging Te…

astro-ph.HE2026

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…

astro-ph.HE2026

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…

astro-ph.HE2026

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…

astro-ph.HE2026★ 1 cited

VERITAS Observations Contemporaneous with the LHAASO Detection of NGC 4278

The VERITAS Collaboration, A. Archer, P. Bangale +66

Significant gamma-ray emission between 1 TeV and 20 TeV from a point source, 1LHAASO J1219+2915, consistent with the location of the LINER/LLAGN galaxy NGC 4278 was recently report…

astro-ph.HE2026

VERITAS contributions to the 39th International Cosmic Ray Conference

A. Archer, P. Bangale, J. T. Bartkoske +55

Compilation of papers presented by the VERITAS Collaboration at the 39th International Cosmic Ray Conference (ICRC), held July 14 through July 24, 2025 in Geneva, Switzerland.

astro-ph.HE2025

Probing a cosmogenic origin of astrophysical neutrinos and cosmic rays using gamma-ray observations of TXS 0506+056

A. Acharyya, A. Archer, P. Bangale +58

In September 2017, a high-energy neutrino event detected by the IceCube Neutrino Observatory (IceCube-170922A) was associated, at the level, with a gamma-ray flare from the bl…

astro-ph.HE2025★ 3 cited

Constraints on Axion-Like Particles from VERITAS Observations of a Flaring Radio Galaxy in the Perseus Cluster

C. B. Adams, A. Archer, P. Bangale +62

Background: Axion-like particles (ALPs) are hypothetical particles that emerge in numerous theoretical extensions to the Standard Model. Their coupling to electromagnetic field imp…

astro-ph.HE2025

Multi-wavelength Study of HESS J0632+057: New Insights into Pulsar-Disk Interaction

Jaegeun Park, Hongjun An, Chanho Kim +60

We present an analysis of new multi-wavelength observations of the TeV gamma-ray binary HESS J0632+057, conducted using SALT, Swift, NuSTAR, and VERITAS in 2023--2024. By combining…

astro-ph.HE2025

Multiwavelength observation of a candidate pulsar halo LHAASO J0621+3755 and the first X-ray detection of PSR J0622+3749

C. B. Adams, A. Archer, P. Bangale +71

Pulsar halos are regions around middle-aged pulsars extending out to tens of parsecs. The large extent of the halos and well-defined central cosmic-ray accelerators make this new c…

astro-ph.HE2025

Constraints on the X-ray and Very High Energy -ray Flux from Supernova Remnant W44

A. Archer, P. Bangale, J. T. Bartkoske +55

Observations of GeV gamma-ray emission from the well-studied mixed-morphology supernova remnant (SNR) W44 by Fermi-LAT and AGILE imply that it is a site of significant cosmic ray a…

astro-ph.HE2025★ 4 cited

VERITAS and multiwavelength observations of the Blazar B3 2247+381 in response to an IceCube neutrino alert

Atreya Acharyya, Colin B. Adams, Priyadarshini Bangale +494

While the sources of the diffuse astrophysical neutrino flux detected by the IceCube Neutrino Observatory are still largely unknown, one of the promising methods used towards under…

astro-ph.HE2025

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…

astro-ph.HE2024★ 5 cited

Multiwavelength Investigation of -ray Source MGRO J1908+06 Emission Using Fermi-LAT, VERITAS, and HAWC

The VERITAS collaboration, The HAWC collaboration, LAT collaboration

This paper investigates the origin of the -ray emission from MGRO J1908+06 in the GeV-TeV energy band. By analyzing the data collected by {\it Fermi}-LAT, VERITAS, and HAWC, wit…

astro-ph.HE2024

An indirect search for dark matter with a combined analysis of dwarf spheroidal galaxies from VERITAS

A. Acharyya, C. B. Adams, P. Bangale +59

Understanding the nature and identity of dark matter is a key goal in the physics community. In the case that TeV-scale dark matter particles decay or annihilate into standard mode…

astro-ph.HE2023

VERITAS contributions to the 38th International Cosmic Ray Conference

A. Acharyya, C. B. Adams, A. Archer +61

Compilation of papers presented by the VERITAS Collaboration at the 38th International Cosmic Ray Conference (ICRC), held July 26 through August 3, 2023 in Nagoya, Japan.

astro-ph.HE2023★ 84 cited

The Radio to GeV Afterglow of GRB 221009A

Tanmoy Laskar, Kate D. Alexander, Raffaella Margutti +27

GRB 221009A () is one of the closest known long -ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity…