activity
20142025
most citedExtended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth

528 citations · 3k across the 62 of their papers we have counts for

collaborators

63 papers

astro-ph.HE2025

Methods for statistical detection of GRBs in the context of the LST-CTAO

Léo Le Moigne, Mathieu de Bony de Lavergne, Armand Fiasson +3

Gamma-Ray Bursts (GRBs) afterglows are rapidly decaying signals that pose significant detection challenges, requiring improved methods to track their temporal evolution. In this st…

astro-ph.HE2025

Transient Observations with LST-1: Key Results and Future Prospects

Monica Seglar-Arroyo, Alessio Berti, Alessandro Carosi +9

The recent detections of the afterglow phase of long gamma-ray bursts (lGRBs) at very high energies (VHE, >100 GeV) mark a significant advance in astrophysics of transient phenomen…

astro-ph.HE2024★ 11 cited

Spectral study of very high energy gamma rays from SS 433 with HAWC

R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez +78

Very-high-energy (0.1-100 TeV) gamma-ray emission was observed in HAWC data from the lobes of the microquasar SS 433, making them the first set of astrophysical jets that were reso…

astro-ph.HE2024

Observation of the Galactic Center PeVatron Beyond 100 TeV with HAWC

A. Albert, R. Alfaro, C. Alvarez +99

We report an observation of ultra-high energy (UHE) gamma rays from the Galactic Center region, using seven years of data collected by the High-Altitude Water Cherenkov (HAWC) Obse…

astro-ph.HE2024

Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415

R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez +78

The first TeV gamma-ray source with no lower energy counterparts, TeV J2032+4130, was discovered by HEGRA. It appears in the third HAWC catalog as 3HWC J2031+415 and it is a bright…

astro-ph.HE2024★ 1 cited

Performance of the HAWC Observatory and TeV Gamma-Ray Measurements of the Crab Nebula with Improved Extensive Air Shower Reconstruction Algorithms

A . Albert, R. Alfaro, C. Alvarez +90

The High-Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory located on the side of the Sierra Negra volcano in Mexico, has been fully operational since 2015. The HAWC collaborat…

astro-ph.HE2024

The case of the missing VHE GRBs: A retrospective study of Swift gamma-ray bursts with Imaging Atmospheric Cherenkov Telescopes

Halim Ashkar, Aurélie Sangaré, Stephen Fegan +3

Gamma-ray bursts (GRBs) are particle acceleration sites that can emit photons in the very high-energy (VHE) domain through non-thermal processes. From 2004 until 2018, the current…

astro-ph.HE2023

Comparing HAWC blazars light curves with different data reconstruction versions

J. A. García-González, M. M. González

We present a comparison of the flux normalization of HAWC sources using 17 months of data that was processed using two different versions of the official data reconstruction used f…

astro-ph.HE2023

The HAWC ultra-high-energy gamma-ray map with more than 5 years of data

Kelly Malone, José Andrés García González, Patrick Harding

In 2020, the HAWC Collaboration presented the first catalog of gamma-ray sources emitting above 56 TeV and 100 TeV. With nine sources detected, this was the highest-energy source c…

astro-ph.HE2023★ 2 cited

Galactic Gamma-Ray Diffuse Emission at TeV energies with HAWC Data

R. Alfaro, C. Alvarez, J. C. Arteaga-Velazquez +77

The Galactic gamma-ray diffuse emission (GDE) is emitted by cosmic rays (CRs), ultra-relativistic protons and electrons, interacting with gas and electromagnetic radiation fields i…

astro-ph.HE2023★ 1 cited

An updated survey of Active Galaxies with the HAWC gamma-ray observatory

Fernando Ureña-Mena, Alberto Carramiñana, Daniel Rosa-González +2

We present an update of the survey of Active Galaxies with the High Altitude Water Cherenkov (HAWC) gamma-ray observatory. This work adds 567 days of HAWC data to the previously pu…

astro-ph.HE2023

Study of the long-term Very High Energy emission of the blazars 1ES 1215+3031 and VER J0521+211 with the HAWC gamma-ray observatory

Fernando Ureña-Mena, Alberto Carramiñana, Anna Lia Longinotti +2

Blazars are the most abundant type of extragalactic gamma-ray source, usually presenting high variability across the electromagnetic spectrum. Their Very High Energy (VHE, above 0.…

astro-ph.HE2023★ 4 cited

HAWC Study of Very-High-Energy -ray Spectrum of HAWC J1844-034

HAWC Collaboration, A. Albert, C. Alvarez +74

Recently, the region surrounding eHWC J1842-035 has been studied extensively by gamma-ray observatories due to its extended emission reaching up to a few hundred TeV and potential…

astro-ph.HE2023★ 1 cited

An optimized search for dark matter in the galactic halo with HAWC

A. Albert, R. Alfaro, C. Alvarez +63

The Galactic Halo is a key target for indirect dark matter detection. The High Altitude Water Cherenkov (HAWC) observatory is a high-energy (~300 GeV to >100 TeV) gamma-ray detecto…

astro-ph.HE2023

A Contribution of the HAWC Observatory to the TeV era in the High Energy Gamma-Ray Astrophysics: The case of the TeV-Halos

Ramiro Torres-Escobedo, Hao Zhou, Eduardo de la Fuente +130

We present a short overview of the TeV-Halos objects as a discovery and a relevant contribution of the High Altitude Water Čerenkov (HAWC) observatory to TeV astrophysics. We discu…

astro-ph.HE2023★ 65 cited

The High-Altitude Water Cherenkov (HAWC) Observatory in México: The Primary Detector

A. U. Abeysekara, A. Albert, R. Alfaro +140

The High-Altitude Water Cherenkov (HAWC) observatory is a second-generation continuously operated, wide field-of-view, TeV gamma-ray observatory. The HAWC observatory and its analy…

astro-ph.HE2022★ 31 cited

The TeV Sun Rises: Discovery of Gamma rays from the Quiescent Sun with HAWC

A. Albert, R. Alfaro, C. Alvarez +89

We report the first detection of a TeV gamma-ray flux from the solar disk (6.3), based on 6.1 years of data from the High Altitude Water Cherenkov (HAWC) observatory. The 0.5--2…

astro-ph.HE2022

High Altitude characterization of the Hunga Pressure Wave with Cosmic Rays by the HAWC Observatory

R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez +64

High-energy cosmic rays that hit the Earth can be used to study large-scale atmospheric perturbations. After a first interaction in the upper parts of the atmosphere, cosmic rays p…

astro-ph.HE2022★ 2 cited

Limits on the Diffuse Gamma-Ray Background above 10 TeV with HAWC

HAWC Collaboration, A. Albert, R. Alfaro +87

The high-energy Diffuse Gamma-Ray Background (DGRB) is expected to be produced by unresolved isotropically distributed astrophysical objects, potentially including dark matter anni…

astro-ph.HE2022

Search for Gamma-Ray and Neutrino Coincidences Using HAWC and ANTARES Data

H. A. Ayala Solares, S. Coutu, D. Cowen +228

In the quest for high-energy neutrino sources, the Astrophysical Multimessenger Observatory Network (AMON) has implemented a new search by combining data from the High Altitude Wat…

astro-ph.HE2022★ 14 cited

Gamma/Hadron Separation with the HAWC Observatory

R. Alfaro, C. Alvarez, J. D. Álvarez +90

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory observes atmospheric showers produced by incident gamma rays and cosmic rays with energy from 300 GeV to more than 10…

astro-ph.IM2022★ 1 cited

Validation of standardized data formats and tools for ground-level particle-based gamma-ray observatories

A. Albert, R. Alfaro, J. C. Arteaga-Velázquez +74

Ground-based gamma-ray astronomy is still a rather young field of research, with strong historical connections to particle physics. This is why most observations are conducted by e…

astro-ph.HE2022★ 10 cited

-ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC

A. Albert, R. Alfaro, C. Alvarez +84

This paper reports on the -ray properties of the 2018 Galactic nova V392 Per, spanning photon energies 0.1 GeV to 100 TeV by combining observations from the Fermi Gamma-ra…

astro-ph.IM2021★ 5 cited

Gamma-Ray Burst detection prospects for next generation ground-based VHE facilities

G. La Mura, U. Barres de Almeida, R. Conceição +6

Gamma-ray Bursts (GRB) were discovered by satellite-based detectors as powerful sources of transient -ray emission. The Fermi satellite detected an increasing number of these ev…