Related papers: A general data quality inspection for Gamma-Ray Bu…

Testing of Front-End Readout Prototype ASICs Designed for WCDA in LHAASO

The water Cherenkov detector array (WCDA) is one of the key detectors in the large high altitude air shower observatory (LHAASO), which is proposed for very high gamma ray source survey. In WCDA, there are more than 3000 photomultiplier…

Instrumentation and Detectors · Physics 2018-06-26 Shengzhi Zhou , Lei Zhao , Yuxiang Guo , Ruoshi Dong , Boyu Cheng , Jiajun Qin , Sifan Qian , Shubin Liu , Qi An

Detection of vertical muons with the HAWC water Cherenkov detectors and its application to gamma/hadron discrimination

The HAWC observatory reconstructs atmospheric showers induced by very high-energy primary cosmic- or gamma-rays. Cosmic-rays with hadronic nature are several orders of magnitude more frequent than primary gammas and therefore it is…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Ariel Zuñiga-Reyes , Alberto Hernández , Aldo Miranda-Aguilar , Andrés Sandoval , J. Martínez-Castro , Rubén Alfaro , Ernesto Belmont , Hermes León , Ana P. Vizcaya

Very High Energy Gamma-Ray Observations with H.E.S.S

The H.E.S.S. Imaging Atmospheric Cherenkov Telescope Array is currently the most sensitive instrument for Very High Energy (VHE) gamma-ray observations in the energy range of about 0.1-10 TeV. During more than two years of operation with…

Astrophysics · Physics 2007-05-23 Christopher van Eldik

BL Lac: A New Ultrahigh-Energy Gamma-Ray Source

The active galactic nucleus BL Lac was observed with the Gt-48 atmospheric Cherenkov detector of the Crimean Astrophysical Observatory from July 23-September 1, 1998, in order to search for ultrahigh-energy gamma-ray (>1 TeV) emission. The…

Astrophysics · Physics 2009-11-07 Yu. I. Neshpor , N. N. Chalenko , A. A. Stepanian , O. R. Kalekin , N. A. Jogolev , V. P. Fomin , V. G. Shitov

Detection of TeV Gamma-Rays from extended sources with Milagro

The Milagro gamma-ray observatory employs a water Cherenkov detector to observe extensive air showers produced by high-energy particles impacting in the Earth's atmosphere. A 4800 m$^{2}$ pond instrumented with 723 8" PMTs detects Cherenkov…

Astrophysics · Physics 2019-08-14 P. M. Saz Parkinson

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

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 Water Cherenkov (HAWC) observatory and the Astronomy with a…

High Energy Astrophysical Phenomena · Physics 2023-03-15 H. A. Ayala Solares , S. Coutu , D. Cowen , D. B. Fox , T. Grégoire , F. McBride , M. Mostafá , K. Murase , S. Wissel , A. Albert , S. Alves , M. André , M. Ardid , S. Ardid , J. -J. Aubert , J. Aublin , B. Baret , S. Basa , B. Belhorma , M. Bendahman , F. Benfenati , V. Bertin , S. Biagi , M. Bissinger , J. Boumaaza , M. Bouta , M. C. Bouwhuis , H. Brânzaş , R. Bruijn , J. Brunner , J. Busto , B. Caiffi , D. Calvo , A. Capone , L. Caramete , J. Carr , V. Carretero , S. Celli , M. Chabab , T. N. Chau , R. Cherkaoui El Moursli , T. Chiarusi , M. Circella , J. A. B. Coelho , A. Coleiro , R. Coniglione , P. Coyle , A. Creusot , A. F. Díaz , G. de Wasseige , B. De Martino , C. Distefano , I. Di Palma , A. Domi , C. Donzaud , D. Dornic , D. Drouhin , T. Eberl , T. van Eeden , D. van Eijk , N. El Khayati , A. Enzenhöfer , P. Fermani , G. Ferrara , F. Filippini , L. Fusco , J. García , P. Gay , H. Glotin , R. Gozzini , R. Gracia Ruiz , K. Graf , C. Guidi , S. Hallmann , H. van Haren , A. J. Heijboer , Y. Hello , J. J. Hernández-Rey , J. Hößl , J. Hofestädt , F. Huang , G. Illuminati , C. W. James , B. Jisse-Jung , M. de Jong , P. de Jong , M. Kadler , O. Kalekin , U. Katz , A. Kouchner , I. Kreykenbohm , V. Kulikovskiy , R. Lahmann , M. Lamoureux , R. Le Breton , D. Lefèvre , E. Leonora , G. Levi , S. Le Stum , D. Lopez-Coto , S. Loucatos , L. Maderer , J. Manczak , M. Marcelin , A. Margiotta , A. Marinelli , J. A. Martínez-Mora , K. Melis , P. Migliozzi , A. Moussa , R. Muller , L. Nauta , S. Navas , E. Nezri , B. Ó Fearraigh , A. Păaun , G. E. Păvălaş , C. Pellegrino , M. Perrin-Terrin , V. Pestel , P. Piattelli , C. Pieterse , C. Poirè , V. Popa , T. Pradier , N. Randazzo , D. Real , S. Reck , G. Riccobene , A. Romanov , A. Sánchez-Losa , D. F. E. Samtleben , M. Sanguineti , P. Sapienza , J. Schnabel , J. Schumann , F. Schüssler , J. Seneca , M. Spurio , Th. Stolarczyk , M. Taiuti , Y. Tayalati , S. J. Tingay , B. Vallage , V. Van Elewyck , F. Versari , S. Viola , D. Vivolo , J. Wilms , S. Zavatarelli , A. Zegarelli , J. D. Zornoza , J. Zúñiga , A. Albert , C. Alvarez , J. C. Arteaga-Velázquez , R. Babu , E. Belmont-Moreno , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , U. Cotti , O. Chaparro-Amaro , J. Cotzomi , S. Coutiño de León , E. De la Fuente , C. de León , R. Diaz Hernandez , M. A. DuVernois , M. Durocher , J. C. Díaz-Vélez , K. Engel , C. Espinoza , K. L. Fan , M. Fernández Alonso , N. Fraija , J. A. García-González , F. Garfias , M. M. González , J. A. Goodman , J. P. Harding , S. Hernandez , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , V. Joshi , S. Kaufmann , A. Lara , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , E. Moreno , A. Nayerhoda , L. Nellen , M. U. Nisa , R. Noriega-Papaqui , N. Omodei , A. Peisker , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , E. Ruiz-Velasco , H. Salazar , F. Salesa Greus , A. Sandoval , M. Schneider , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Ureña-Mena , E. Varela , X. Wang , K. Whitaker , E. Willox , A. Zepeda , H. Zhou

HAWC Study of Very-High-Energy $\gamma$-ray Spectrum of HAWC J1844-034

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 as a hadronic accelerator. In this work, we use 1,910 days…

High Energy Astrophysical Phenomena · Physics 2023-09-11 HAWC Collaboration , A. Albert , C. Alvarez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , E. Belmont-Moreno , M. Breuhaus , T. Capistrán , A. Carramiñana , S. Casanova , J. Cotzomi , S. Coutiño de León , E. De la Fuente , D. Depaoli , R. Diaz Hernandez , B. L. Dingus , M. A. DuVernois , M. Durocher , K. Engel , C. Espinoza , K. L. Fan , K. Fang , N. Fraija , J. A. García-González , M. M. González , J. A. Goodman , S. Groetsch , J. P. Harding , I. Herzog , J. Hinton , D. Huang , F. Hueyotl-Zahuantitla , T. B. Humensky , P. Hüntemeyer , V. Joshi , S. Kaufmann , J. Lee , H. León Vargas , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , J. A. Morales-Soto , E. Moreno , M. Mostafá , L. Nellen , R. Noriega-Papaqui , L. Olivera-Nieto , N. Omodei , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , 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. Ureña-Mena , E. Varela , L. Villaseñor , X. Wang , I. J. Watson , E. Willox , H. Zhou

The First LHAASO Catalog of Gamma-Ray Sources

We present the first catalog of very-high energy and ultra-high energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory (LHAASO). The catalog was compiled using 508 days of data collected by the Water Cherenkov…

High Energy Astrophysical Phenomena · Physics 2024-03-05 Zhen Cao , F. Aharonian , Q. An , Axikegu , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , J. T. Cai , Q. Cao , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , Liang Chen , Lin Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , D. della Volpe , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , L. Q. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. Y. He , X. B. He , Y. He , M. Heller , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , Q. Hu , S. C. Hu , D. H. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Z. C. Huang , X. L. Ji , H. Y. Jia , K. Jia , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , M. M. Kang , T. Ke , D. Kuleshov , K. Kurinov , B. B. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , J. Li , Jian Li , Jie Li , K. Li , W. L. Li , W. L. Li , X. R. Li , Xin Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , R. Lu , Q. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , Z. Min , W. Mitthumsiri , H. J. Mu , Y. C. Nan , A. Neronov , Z. W. Ou , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , Y. Q. Qi , B. Q. Qiao , J. J. Qin , D. Ruffolo , A. Sáiz , D. Semikoz , C. Y. Shao , L. Shao , O. Shchegolev , X. D. Sheng , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Q. W. Tang , Z. B. Tang , W. W. Tian , C. Wang , C. B. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , K. Wang , L. P. Wang , L. Y. Wang , P. H. Wang , R. Wang , W. Wang , X. G. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Y. J. Wang , Z. H. Wang , Z. X. Wang , Zhen Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , C. Y. Wu , H. R. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , Z. Xiong , D. L. Xu , R. F. Xu , R. X. Xu , W. L. Xu , L. Xue , D. H. Yan , J. Z. Yan , T. Yan , C. W. Yang , F. Yang , F. F. Yang , H. W. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , M. Zha , B. B. Zhang , F. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , L. X. Zhang , Li Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. B. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. F. Zhang , Yi Zhang , Yong Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo.

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

Standardized Formats for Gamma-Ray Analysis Applied to HAWC Observatory Data

A wide range of data formats and proprietary software have traditionally been used in gamma-ray astronomy, usually developed for a single specific mission or experiment. However, in recent years there has been an increasing effort towards…

Instrumentation and Methods for Astrophysics · Physics 2021-09-10 Laura Olivera-Nieto , Vikas Joshi , Harm Schoorlemmer , Axel Donath

Expected performance of the ALTO particle detector array designed for 200 GeV - 50 TeV gamma-ray astronomy

The CoMET is an R$\&$D project aiming to design a very-high-energy (VHE) gamma-ray observatory sensitive to energies above $\sim$ 200 GeV. The science goals include continuous observation of soft-spectrum VHE gamma-ray sources such as…

Instrumentation and Methods for Astrophysics · Physics 2021-07-28 M. Senniappan , Y. Becherini , M. Punch , S. Thoudam , T. Bylund , G. Kukec Mezek , J. -P. Ernenwein

Gamma-ray and Cosmic Ray Astrophysics from 10 TeV to 1 EeV with the large-area ($>$10 km$^2$) air-shower Detector SCORE

We propose to explore the so-far poorly measured cosmic ray and gamma-ray sky (accelerator sky) in the energy range from 10 TeV to 1 EeV. New physics questions might be addressed in this last remaining observation window of gamma-ray…

Instrumentation and Methods for Astrophysics · Physics 2009-09-03 M. Tluczykont , T. Kneiske , D. Hampf , D. Horns

Atmospheric Cherenkov Gamma-ray Telescopes

The stereoscopic imaging atmospheric Cherenkov technique, developed in the 1980s and 1990s, is now used by a number of existing and planned gamma-ray observatories around the world. It provides the most sensitive view of the very high…

Instrumentation and Methods for Astrophysics · Physics 2015-10-21 Jamie Holder

Automated analysis of Fermi-LAT data to trigger ground-based gamma-ray observations

The Fermi Gamma-ray Space Telescope regularly surveys the entire sky in the energy range between 0.3 and 100 GeV with an homogeneous coverage. This makes Fermi a very useful guide for ground-based Cherenkov-telescope arrays like VERITAS,…

High Energy Astrophysical Phenomena · Physics 2015-05-30 M. Errando , M. Orr , E. Kara

Search for Dark Matter Gamma-ray Emission from the Andromeda Galaxy with the High-Altitude Water Cherenkov Observatory

The Andromeda Galaxy (M31) is a nearby ($\sim$780 kpc) galaxy similar to our own Milky Way. Observational evidence suggests that it resides in a large halo of dark matter (DM), making it a good target for DM searches. We present a search…

High Energy Astrophysical Phenomena · Physics 2019-03-15 A. Albert , R. Alfaro , C. Alvarez , J. D. Alvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , A. Bernal , 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 , S. Dichiara , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , C. Eckner , K. Engel , O. Enríquez-Rivera , C. Espinoza , D. W. Fiorino , N. Fraija , A. Galván-Gámez , J. A. García-González , F. Garfias , A. González Muñoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , A. Hernandez-Almada , B. Hona , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , G. J. Kunde , D. Lennarz , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis Raya , R. Luna-García , K. Malone , S. S. Marinelli , O. Martinez , J. Martínez-Castro , H. Martínez-Huerta , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , A. Nayerhoda , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , R. Pelayo , J. Pretz , E. G. Pérez-Pérez , Z. Ren , C. D. Rho , C. Riviére , D. Rosa-González , M. Rosenberg , E. Ruiz-Velasco , E. Ruiz-Velasco , H. Salazar , F. Salesa Greus , A. Sandoval , M. Schneider , M. Seglar Arroyo , 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 , G. Zaharijas , A. Zepeda , H. Zhou

Instrumenting a Lake as a Wide-Field Gamma-ray Detector

Ground-level particle detection has recently emerged as an extremely powerful approach to TeV-PeV gamma-ray astronomy. The most successful observatories of this type, HAWC and LHAASO, utilise water-Cherenkov based detector units, housed in…

Instrumentation and Methods for Astrophysics · Physics 2025-04-15 Hazal Goksu , Werner Hofmann , Felix Werner , Fabian Haist , Jim Hinton

HAWC Observation of Supernova Remnants and Pulsar Wind Nebulae

The majority of Galactic TeV gamma-ray sources are pulsar wind nebulae (PWNe) and supernova remnants (SNRs), and the most common association for unidentified sources is PWN. Many of these sources were discovered in TeV by imaging air…

High Energy Astrophysical Phenomena · Physics 2019-08-13 C. M. Hui , H. Zhou

Search for Gamma Ray Bursts at Chacaltaya

A search for Gamma Ray Bursts in the GeV-TeV energy range has been performed by INCA, an air shower array working at 5200 m of altitude at the Chacaltaya Laboratory (Bolivia). The altitude of the detector and the use of the "single particle…

Astrophysics · Physics 2019-08-14 Silvia Vernetto

Very High Energy Gamma-Ray Observations of the Galactic Centre Region

Recent progress in pushing the sensitivity of the Imaging Atmospheric Cherenkov Technique into the 10 mCrab regime has enabled first sensitive observations of the innermost few 100 pc of the Milky Way in Very High Energy (VHE; >100 GeV)…

Astrophysics · Physics 2009-11-13 Christopher van Eldik

A Survey of TeV emission from Galactic Supernova Remnants with HAWC

Supernova remnants (SNRs) have long been hypothesized as the main source of Galactic Cosmic Rays up to PeV energies. Some of them have indeed been shown to accelerate protons to TeV energies and above. But which of them are indeed efficient…

High Energy Astrophysical Phenomena · Physics 2019-07-22 Henrike Fleischhack