Related papers: First year results of the High Altitude Water Cher…

The Southern Wide-field Gamma-ray Observatory

The Southern Wide-field Gamma-ray Observatory (SWGO) is an R&D project to plan and design the next observatory to detect gamma rays in the Southern hemisphere. The experiment, planned to be placed at an altitude greater than 4400 m, is…

High Energy Physics - Experiment · Physics 2023-09-12 Ruben Conceição

Search for Gamma-ray Spectral Lines from Dark Matter Annihilation in Dwarf Galaxies with the High-Altitude Water Cherenkov Observatory

Local dwarf spheroidal galaxies (dSphs) are nearby dark-matter dominated systems, making them excellent targets for searching for gamma rays from particle dark matter interactions. If dark matter annihilates or decays directly into two…

High Energy Astrophysical Phenomena · Physics 2020-05-06 The HAWC Collaboration

Prospective Study on Observations of {\gamma}-Ray Sources in the Galaxy Using the HADAR Experiment

The High Altitude Detection of Astronomical Radiation (HADAR) experiment is a refracting terrestrial telescope array based on the atmospheric Cherenkov imaging technique. It focuses the Cherenkov light emitted by extensive air showers…

High Energy Astrophysical Phenomena · Physics 2022-09-26 Xiangli Qian , Huiying Sun , Tianlu Chen , Danzengluobu , Youliang Feng , Qi Gao , Quanbu Gou , Yiqing Guo , Hongbo Hu , Mingming Kang , Haijin Li , Cheng Liu , Maoyuan Liu , Wei Liu , Bingqiang Qiao , Xu Wang , Zhen Wang , Guangguang Xin , Yuhua Yao , Qiang Yuan , Yi Zhang

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

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. The likely cause is hadronic cosmic rays undergoing…

High Energy Astrophysical Phenomena · Physics 2018-12-26 A. Albert , R. Alfaro , C. Alvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , E. Belmont-Moreno , S. Y. BenZvi , C. Brisbois , K. S. Caballero-Mora , T. Capistràn , A. Carramiñana , S. Casanova , M. Castillo , J. Cotzomi , S. Coutiño de León , C. De León , E. De la Fuente , S. Dichiara , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , K. Engel , O. Enríquez-Rivera , C. Espinoza , H. Fleischhack , N. Fraija , J. A. García-González , F. Garfias , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , B. Hona , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , H. León Vargas , G. Luis-Raya , J. Lundeen , R. López-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , A. Nayerhoda , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , J. Pretz , E. G. Pérez-Pérez , Z. Ren , C. D. Rho , C. Rivière , D. Rosa-González , M. Rosenberg , E. Ruiz-Velasco , H. Salazar , F. Salesa Greus , A. Sandoval , M. Schneider , H. Schoorlemmer , M. Seglar Arroyo , G. Sinnis , A. J. Smith , P. Surajbali , I. Taboada , O. Tibolla , K. Tollefson , I. Torres , L. Villaseñor , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , T. Yapici , A. Zepeda , H. Zhou , J. D. Álvarez , J. F. Beacom , R. K. Leane , T. Linden , K. C. Y. Ng , A. H. G. Peter , B. Zhou

Very-High-Energy gamma-ray astronomy with the ALTO observatory

ALTO is a concept/project in the exploratory phase since 2013 aiming to build a wide-field VHE gamma-ray observatory at very high altitude in the Southern hemisphere. The operation of such an observatory will complement the Northern…

Instrumentation and Methods for Astrophysics · Physics 2017-08-04 Yvonne Becherini , Satyendra Thoudam , Michael Punch , Jean-Pierre Ernenwein

Estimate of the energy spectrum of the light component of cosmic rays in HAWC using the shower age and the fraction of hit PMT's

The High Altitude Water Cherenkov (HAWC) observatory is a ground-based air-shower detector designed to study the TeV gamma and cosmic ray windows. The observatory is composed of a densely packed array of $300$ water Cherenkov tanks, $4.5$ m…

High Energy Astrophysical Phenomena · Physics 2018-07-01 J. C. Arteaga-Velázquez , Z. Hampel-Arias , J. D. Álvarez

HAWC Performance Enhanced by Machine Learning in Gamma-Hadron Separation

Improving gamma-hadron separation is one of the most effective ways to enhance the performance of ground-based gamma-ray observatories. With over a decade of continuous operation, the High-Altitude Water Cherenkov (HAWC) Observatory has…

Instrumentation and Methods for Astrophysics · Physics 2025-06-24 R. Alfaro , C. Alvarez , A. Andrés , E. Anita-Rangel , M. Araya , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , P. Bangale , E. Belmont-Moreno , A. Bernal , T. Capistrán , A. Carramiñana , F. Carreón , S. Casanova , U. Cotti , E. De la Fuente , D. Depaoli , P. Desiati , N. Di Lalla , R. Diaz Hernandez , M. A. DuVernois , J. C. Díaz-Vélez , K. Engel , T. Ergin , C. Espinoza , K. L. Fan , N. Fraija , S. Fraija , J. A. García-González , F. Garfias , N. Ghosh , A. Gonzalez Muñoz , M. M. González , J. A. González , J. A. Goodman , S. Groetsch , J. P. Harding , S. Hernández-Cadena , I. Herzog , D. Huang , P. Hüntemeyer , A. Iriarte , S. Kaufmann , D. Kieda , K. Leavitt , J. Lee , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , P. E. Mirón-Enriquez , J. A. , Montes , J. A. Morales-Soto , E. Moreno , M. Najafi , A. , Nayerhoda , L. Nellen , N. Omodei , M. , Osorio , E. Ponce , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , A. Rodriguez Parra , D. Rosa-González , M. Roth , H. Salazar , A. Sandoval , J. Serna-Franco , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , E. Varela , L. Villaseñor , X. Wang , Z. Wang , I. J. Watson , H. Wu , S. Yu , H. Zhou , C. de León

High Energy Astrophysics

The development of the atmospheric Cherenkov imaging technique has led to significant advances in gamma-ray detection sensitivity in the energy range from 200 GeV to 50 TeV. The Whipple Observatory 10m reflector has detected the first…

Astrophysics · Physics 2007-05-23 T. C. Weekes

Detailed Analysis of the TeV {\gamma}-Ray Sources 3HWC J1928+178, 3HWC J1930+188, and the New Source HAWC J1932+192

The latest High Altitude Water Cherenkov (HAWC) point-like source catalog up to 56 TeV reported the detection of two sources in the region of the Galactic plane at galactic longitude 52\deg < l < 55\deg, 3HWC J1930+188 and 3HWC J1928+178.…

High Energy Astrophysical Phenomena · Physics 2023-03-01 A. Albert , R. Alfaro , C. Alvarez , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , E. Belmont-Moreno , C. Brisbois , K. S. Caballero-Mora , T. Capistrń , A. Carramiñana , S. Casanova , O. Chaparro-Amaro , U. Cotti , J. Cotzomi , S. CoutiñodeLeón , E. De la Fuente , C. de León , R. Diaz Hernandez , J. C. Díaz-Vélez , B. L. Dingus , M. A. DuVernois , M. Durocher , K. Engel , C. Espinoza , K. L. Fan , M. Fernández Alonso , N. Fraija , J. A. García-González , F. Garfias , H. Goksu , M. M. González , J. A. Goodman , J. P. Harding , S. Hernandez , J. Hinton , B. Hona , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , D. Kieda , W. H. Lee , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , R. López-Coto , K. Malone , V. Marandon , O. Martinez , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , E. Moreno , M. Mostafá , A. Nayerhoda , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , L. Olivera-Nieto , N. Omodei , A. Peisker , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , E. Ruiz-Velasco , H. Salazar , D. Salazar-Gallegos , F. Salesa Greus , A. Sandoval , M. Schneider , J. Serna-Franco , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Ureña-Mena , L. Villaseñor , X. Wang , F. Werner , E. Willox , H. Zhou

Air shower reconstruction using HAWC and the Outrigger array

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory detects cosmic- and gamma-ray initiated air showers in the TeV energy range using 300 water Cherenkov detectors (WCDs). To improve its sensitivity at the highest energies, HAWC…

Instrumentation and Methods for Astrophysics · Physics 2019-08-20 Vikas Joshi , Harm Schoorlemmer

All-particle cosmic ray energy spectrum measured by the HAWC experiment from 10 to 500 TeV

We report on the measurement of the all-particle cosmic ray energy spectrum with the High Altitude Water Cherenkov (HAWC) Observatory in the energy range 10 to 500 TeV. HAWC is a ground based air-shower array deployed on the slopes of…

High Energy Astrophysical Phenomena · Physics 2018-03-22 HAWC Collaboration , R. Alfaro , C. Alvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , A. S. Barber , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , C. Brisbois , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , M. Castillo , U. Cotti , J. Cotzomi , S. Coutiño de León , C. De León , E. De la Fuente , R. Diaz Hernandez , S. Dichiara , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , R. W. Ellsworth , O. Enriquez-Rivera , D. W. Fiorino , H. Fleischhack , N. Fraija , J. A. García-González , A. González Muñoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , A. Hernandez-Almada , J. Hinton , F. Hueyotl-Zahuantitla , C. M. Hui , P. Huntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , A. Lara , R. J. Lauer , D. Lennarz , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis Raya , R. Luna-García , D. López-Cámara , R. López-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , H. Martínez-Huerta , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , R. Pelayo , J. Pretz , E. G. Pérez-Pérez , Z. Ren , C. D. Rho , C. Rivière , D. Rosa-González , M. Rosenberg , E. Ruiz-Velasco , F. Salesa Greus , A. Sandoval , M. Schneider , H. Schoorlemmer , G. Sinnis , A. J. Smith , R. W. Springer , P. Surajbali , I. Taboada , O. Tibolla , K. Tollefson , I. Torres , T. N. Ukwatta , L. Villaseñor , T. Weisgarber , S. Westerhoff , J. Wood , T. Yapici , A. Zepeda , H. Zhou , J. D. Álvarez

HAWC Timing Calibration

The High-Altitude Water Cherenkov (HAWC) Experiment is a second-generation highsensitivity gamma-ray and cosmic-ray detector that builds on the experience and technology of the Milagro observatory. Like Milagro, HAWC utilizes the water…

Instrumentation and Methods for Astrophysics · Physics 2009-09-16 Petra Huentemeyer , John A. J. Matthews , Brenda Dingus

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

We report the first detection of a TeV gamma-ray flux from the solar disk (6.3$\sigma$), based on 6.1 years of data from the High Altitude Water Cherenkov (HAWC) observatory. The 0.5--2.6 TeV spectrum is well fit by a power law, dN/dE = $A…

High Energy Astrophysical Phenomena · Physics 2023-08-11 A. Albert , R. Alfaro , C. Alvarez , J. C. Arteaga-Velazquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , E. Belmont-Moreno , C. Brisbois , K. S. Caballero-Mora , T. Capistran , A. Carraminana , S. Casanova , O. Chaparro-Amaro , U. Cotti , J. Cotzomi , S. Coutino de Leon , E. De la Fuente , R. Diaz Hernandez , B. L. Dingus , M. A. DuVernois , M. Durocher , J. C. Diaz-Velez , R. W. Ellsworth , K. Engel , C. Espinoza , K. L. Fan , K. Fang , M. Fernandez Alonso , H. Fleischhack , N. Fraija , J. A. Garcia-Gonzalez , F. Garfia , M. M. Gonzalez , J. A. Goodman , J. P. Harding , S. Hernandez , J. Hinton , D. Huang , F. Hueyotl-Zahuantitla , P. Huntemeyer , A. Iriarte , V. Joshi , S. Kaufmann , J. Lee , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , J. Martinez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , E. Moreno , M. Mostafa , A. Nayerhoda , L. Nellen , M. U. Nisa , R. Noriega-Papaqui , L. Olivera-Nieto , N. Omodei , Y. Pérez Araujo , E. G. Perez-Perez , C. D. Rho , D. Rosa-Gonzalez , E. Ruiz-Velasco , H. Salazar , D. Salazar-Gallegos , A. Sandoval , M. Schneider , J. Serna-Franco , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Urena-Mena , X. Wang , I. J. Watson , E. Willox , S. Yun-Cárcamo , H. Zhou , C. de León , J. F. Beacom , T. Linden , K. C. Y. Ng , A. H. G. Peter , B. Zhou

First Limits on the Dark Matter Cross Section with the HAWC Observatory

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 100 GeV - 100 TeV gamma rays and cosmic rays. The HAWC observatory is also sensitive to diverse indirect searches for dark…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Megan Longo Proper , J. Patrick Harding , Brenda Dingus

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

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 0.1 TeV) emission has been studied in detail using Air…

High Energy Astrophysical Phenomena · Physics 2023-10-05 Fernando Ureña-Mena , Alberto Carramiñana , Anna Lia Longinotti , Daniel Rosa-González , HAWC Collaboration

Search for Decaying Dark Matter in the Virgo Cluster of Galaxies with HAWC

The decay or annihilation of dark matter particles may produce a steady flux of very-high-energy gamma rays detectable above the diffuse background. Nearby clusters of galaxies provide excellent targets to search for the signatures of…

High Energy Astrophysical Phenomena · Physics 2024-01-12 A. Albert , R. Alfaro , J. C. Arteaga-Velázquez , H. A. Ayala Solares , R. Babu , E. Belmont-Moreno , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , J. Cotzomi , S. Coutiño de León , D. Depaoli , R. Diaz Hernandez , M. A. DuVernois , M. Durocher , N. Fraija , J. A. García-González , M. M. González , J. A. Goodman , J. P. Harding , S. Hernández-Cadena , I. Herzog , D. Huang , F. Hueyotl-Zahuantitla , V. Joshi , S. Kaufmann , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , M. Mostafá , A. Nayerhoda , L. Nellen , M. U. Nisa , R. Noriega-Papaqui , N. Omodei , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , M. Schneider , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Ureña-Mena , L. Villaseñor , X. Wang , I. J. Watson , S. Yun-Cárcamo

GAW - A very large field-of-view Imaging Atmospheric Cherenkov Telescope

GAW (Gamma Air Watch) is a pathfinder experiment in the TeV range to test the feasibility of a new generation of Imaging Atmospheric Cherenkov Telescopes (IACT). It combines high flux sensitivity with large field-of-view (FoV=24deg x 24deg)…

High Energy Astrophysical Phenomena · Physics 2010-06-14 Luisa Arruda , GAW collaboration

Recent results from the Milagro TeV gamma-ray observatory

Milagro is a gamma-ray observatory employing a water Cherenkov detector to observe extensive air showers produced by high-energy particles impacting in the Earth's atmosphere. We discuss the first detection of TeV gamma-rays from the…

Astrophysics · Physics 2007-05-23 P. M. Saz Parkinson

GAW - An Imaging Atmospheric Cherenkov Telescope with Large Field of View

GAW, acronym for Gamma Air Watch, is a Research and Development experiment in the TeV range, whose main goal is to explore the feasibility of large field of view Imaging Atmospheric Cherenkov Telescopes. GAW is an array of three relatively…

Astrophysics · Physics 2007-08-01 G. Cusumano , G. Agnetta , A. Alberdi , M. Alvarez , P. Assis , B. Biondo , F. Bocchino , P. Brogueira , J. A. Caballero , M. Carvajal , A. J. Castro-Tirado , O. Catalano , F. Celi , C. Delgado , G. Di Cocco , A. Dominguez , J. M. Espino Navas , M. C. Espirito Santo , M. I. Gallardo , J. E. Garcia , S. Giarrusso , M. Gomez , J. L. Gomez , P. Goncalves , M. Guerriero , A. La Barbera , G. La Rosa , M. Lozano , M. C. Maccarone , A. Mangano , I. Martel , E. Massaro , T. Mineo , M. Moles , F. Perez-Bernal , M. A. Peres-Torres , M. Pimenta , A. Pina , F. Prada , J. M. Quesada , J. M. Quintana , J. R. Quintero , J. Rodriguez , F. Russo , B. Sacco , M. A. Sanchez-Conde , A. Segreto , B. Tome' , A. de Ugarte Postigo , P. Vallania

Expected performance of the GAW Cherenkov Telescopes Array. Simulation and Analysis

GAW is a "path-finder" experiment to test the feasibility of a new generation of Imaging Atmospheric Cherenkov telescopes that join high flux sensitivity with large field of view capability using Fresnel lens, stereoscopic observational…

Astrophysics · Physics 2007-07-31 M. C. Maccarone , P. Assis , O. Catalano , G. Cusumano , M. C. Espirito Santo , P. Goncalves , M. Moles , M. Pimenta , A. Pina , B. Sacco , B. Tome'