activity
20112026
most citedExtended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth

528 citations · 2.3k across the 28 of their papers we have counts for

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Showing astro-ph.HEShow all

21 papers · 1 filter

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.HE2019★ 12 cited

HAWC Contributions to the 36th International Cosmic Ray Conference (ICRC2019)

A. U. Abeysekara, A. Albert, R. Alfaro +127

List of proceedings from the HAWC Collaboration presented at the 36th International Cosmic Ray Conference, 24 July - 1 August 2019, Madison, Wisconsin, USA.

astro-ph.HE2018★ 39 cited

VERITAS and Fermi-LAT observations of new HAWC sources

VERITAS Collaboration, A. U. Abeysekara, A. Archer +280

The HAWC (High Altitude Water Cherenkov) collaboration recently published their 2HWC catalog, listing 39 very high energy (VHE; >100~GeV) gamma-ray sources based on 507 days of obs…

astro-ph.HE2018★ 32 cited

First HAWC Observations of the Sun Constrain Steady TeV Gamma-Ray Emission

A. Albert, R. Alfaro, C. Alvarez +92

Steady gamma-ray emission up to at least 200 GeV has been detected from the solar disk in the Fermi-LAT data, with the brightest, hardest emission occurring during solar minimum. T…

astro-ph.HE2017★ 528 cited

Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth

A. U. Abeysekara, A. Albert, R. Alfaro +113

The unexpectedly high flux of cosmic ray positrons detected at Earth may originate from nearby astrophysical sources, dark matter, or unknown processes of cosmic-ray secondary prod…

astro-ph.HE2017★ 65 cited

A Search for Dark Matter in the Galactic Halo with HAWC

A. U. Abeysekara, A. M. Albert, R. Alfaro +100

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 500 GeV - 100 TeV gamma rays and cosmic rays. With its observations…

astro-ph.HE2017★ 17 cited

The HAWC real-time flare monitor for rapid detection of transient events

A. U. Abeysekara, R. Alfaro, C. Alvarez +105

We present the development of a real-time flare monitor for the High Altitude Water Cherenkov (HAWC) observatory. The flare monitor has been fully operational since 2017 January an…

astro-ph.HE2017★ 59 cited

Daily monitoring of TeV gamma-ray emission from Mrk 421, Mrk 501, and the Crab Nebula with HAWC

A. U. Abeysekara, A. Albert, R. Alfaro +104

We present results from daily monitoring of gamma rays in the energy range to TeV with the first 17 months of data from the High Altitude Water Cherenkov (HAWC)…

astro-ph.HE2017★ 41 cited

Search for Very High Energy Gamma Rays from the Northern Bubble Region with HAWC

A. U. Abeysekara, A. Albert, R. Alfaro +108

We present a search of very high energy gamma-ray emission from the Northern Bubble region using data collected with the High Altitude Water Cherenkov (HAWC) gamma…

astro-ph.HE2017★ 326 cited

The 2HWC HAWC Observatory Gamma Ray Catalog

A. U. Abeysekara, A. Albert, R. Alfaro +108

We present the first catalog of TeV gamma-ray sources realized with the recently completed High Altitude Water Cherenkov Observatory (HAWC). It is the most sensitive wide field-of-…

astro-ph.HE2017★ 51 cited

Multiwavelength follow-up of a rare IceCube neutrino multiplet

M. G. Aartsen, M. Ackermann, J. Adams +501

On February 17 2016, the IceCube real-time neutrino search identified, for the first time, three muon neutrino candidates arriving within 100 s of one another, consistent with comi…

astro-ph.HE2017★ 347 cited

Observation of the Crab Nebula with the HAWC Gamma-Ray Observatory

A. U. Abeysekara, A. Albert, R. Alfaro +104

The Crab Nebula is the brightest TeV gamma-ray source in the sky and has been used for the past 25 years as a reference source in TeV astronomy, for calibration and verification of…

astro-ph.HE2015★ 36 cited

Search for TeV Gamma-Ray Emission from Point-like Sources in the Inner Galactic Plane with a Partial Configuration of the HAWC Observatory

A. U. Abeysekara, R. Alfaro, C. Alvarez +95

A survey of the inner Galaxy region of Galactic longitude l in [+15, +50] degree and latitude b in [-4,+4] degree is performed using one-third of the High Altitude Water Cherenkov…

astro-ph.HE2015

Blazar Alerts with the HAWC Online Flare Monitor

Thomas Weisgarber, Ian G. Wisher

The High Altitude Water Cherenkov (HAWC) Observatory monitors the gamma-ray sky in the 100 GeV to 100 TeV energy range with > 95% uptime and unprecedented sensitivity for a survey…

astro-ph.HE2014★ 41 cited

Search for gamma-rays from the unusually bright GRB 130427A with the HAWC Gamma-ray Observatory

The HAWC collaboration, A. U. Abeysekara, R. Alfaro +90

The first limits on the prompt emission from the long gamma-ray burst (GRB) 130427A in the energy band are reported. GRB 130427A was the most powerful b…

astro-ph.HE2014★ 77 cited

Observation of Small-scale Anisotropy in the Arrival Direction Distribution of TeV Cosmic Rays with HAWC

A. U. Abeysekara, R. Alfaro, C. Alvarez +96

The High-Altitude Water Cherenkov (HAWC) Observatory is sensitive to gamma rays and charged cosmic rays at TeV energies. The detector is still under construction, but data acquisit…

astro-ph.HE2014★ 46 cited

Milagro Limits and HAWC Sensitivity for the Rate-Density of Evaporating Primordial Black Holes

A. A. Abdo, A. U. Abeysekara, R. Alfaro +118

Primordial Black Holes (PBHs) are gravitationally collapsed objects that may have been created by density fluctuations in the early universe and could have arbitrarily small masses…

astro-ph.HE2014★ 53 cited

The Sensitivity of HAWC to High-Mass Dark Matter Annihilations

A. U. Abeysekara, R. Alfaro, C. Alvarez +101

The High Altitude Water Cherenkov (HAWC) observatory is a wide field-of-view detector sensitive to gamma rays of 100 GeV to a few hundred TeV. Located in central Mexico at 19 degre…

astro-ph.HE2013★ 6 cited

The HAWC Gamma-Ray Observatory: Dark Matter, Cosmology, and Fundamental Physics

HAWC Collaboration, A. U. Abeysekara, R. Alfaro +99

The High-Altitude Water Cherenkov Gamma Ray Observatory (HAWC) is designed to perform a synoptic survey of the TeV sky. The high energy coverage of the experiment will enable studi…

astro-ph.HE2013★ 214 cited

Sensitivity of the High Altitude Water Cherenkov Detector to Sources of Multi-TeV Gamma Rays

A. U. Abeysekara, R. Alfaro, C. Alvarez +97

The High Altitude Water Cherenkov (HAWC) observatory is an array of large water Cherenkov detectors sensitive to gamma rays and hadronic cosmic rays in the energy band between 100…

astro-ph.HE2011★ 129 cited

On the sensitivity of the HAWC observatory to gamma-ray bursts

HAWC collaboration, A. U. Abeysekara, J. A. Aguilar +145

We present the sensitivity of HAWC to Gamma Ray Bursts (GRBs). HAWC is a very high-energy gamma-ray observatory currently under construction in Mexico at an altitude of 4100 m. It…