activity
20222026
most citedUltra-High-Energy Gamma-Ray Bubble around Microquasar V4641 Sgr

50 citations · 129 across the 12 of their papers we have counts for

collaborators

13 papers

astro-ph.HE2026

The Fourth HAWC Catalog of Very-High-Energy Gamma-Ray Sources

R. Alfaro, C. Alvarez, E. Anita-Rangel +87

We present an updated catalog of TeV gamma-ray sources based on the fifth pass of data from the High-Altitude Water Cherenkov (HAWC) Observatory. This release benefits from improve…

astro-ph.HE2025★ 5 cited

Absence of TeV halos around millisecond pulsars

A. U. Abeysekara, R. Alfaro, C. Alvarez +82

TeV halos are extended very-high-energy (VHE; 0.1-100 TeV) gamma-ray emission around middle-aged pulsars. So far they have only been found around isolated pulsars, but it has been…

astro-ph.HE2025★ 5 cited

Extended TeV Halos May Commonly Exist around Middle-Aged Pulsars

A. Albert, R. Alfaro, C. Alvarez +81

Extended gamma-ray emission around isolated pulsars at TeV energies, also known as TeV halos, have been found around a handful of middle-aged pulsars. The halos are significantly m…

astro-ph.HE2025

Constraints on diffuse X-ray Emission from the TeV halo Candidate HESS J1813-126

David Guevel, Kim L Page, Kaya Mori +2

Extended regions of very high energy -ray emission associated with middle-aged pulsars have been found by -ray observatories. These regions, called TeV halos or pulsar halos,…

astro-ph.HE2025

Orbital Modulation of Gamma-Rays Beyond 100 TeV from LS 5039

R. Alfaro, M. Araya, J. C. Arteaga-Velázquez +88

Gamma-ray binaries are systems composed of a compact object orbiting a massive companion star. The interaction between these two objects can drive relativistic outflows, either jet…

astro-ph.HE2025

Study of the IC 443 region with the HAWC observatory

R. Alfaro, C. Alvarez, M. Araya +89

Supernova remnants are one potential source class considered a PeVatron (i.e. capable of accelerating cosmic rays above PeV energies). The shock fronts produced after the explosion…

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★ 50 cited

Ultra-High-Energy Gamma-Ray Bubble around Microquasar V4641 Sgr

R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez +89

Microquasars are laboratories for the study of jets of relativistic particles produced by accretion onto a spinning black hole. Microquasars are near enough to allow detailed imagi…

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★ 5 cited

High-energy Neutrino Source Cross-correlations with Nearest-neighbor Distributions

Zhuoyang Zhou, Jessi Cisewski-Kehe, Ke Fang +1

The astrophysical origins of the majority of the IceCube neutrinos remain unknown. Effectively characterizing the spatial distribution of the neutrino samples and associating the e…

astro-ph.HE2023

Search for Galactic core-collapse supernovae in a decade of data taken with the IceCube Neutrino Observatory

IceCube Collaboration

The IceCube Neutrino Observatory has been continuously taking data to search for O(0.5-10) s long neutrino bursts since 2007. Even if a Galactic core-collapse supernova is opticall…

astro-ph.HE2022★ 17 cited

High-Energy Neutrinos from Gamma-Ray-Faint Accretion-Powered Hypernebulae

Navin Sridhar, Brian D. Metzger, Ke Fang

Hypernebulae are inflated by accretion-powered winds accompanying hyper-Eddington mass transfer from an evolved post-main sequence star onto a black hole or neutron star companion.…

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…