Related papers: The Detection of TeV Gamma Rays from Crab using th…

TeV gamma-ray survey of the Northern sky using the ARGO-YBJ detector

The ARGO-YBJ detector is an extensive air shower array that has been used to monitor the northern $\gamma$-ray sky at energies above 0.3 TeV from 2007 November to 2013 January. In this paper, we present the results of a sky survey in the…

High Energy Astrophysical Phenomena · Physics 2013-11-26 YBJ Collaboration , B. Bartoli , P. Bernardini , X. J. Bi , I. Bolognino , P. Branchini , A. Budano , A. K. Calabrese Melcarne , P. Camarri , Z. Cao , R. Cardarelli , S. Catalanotti , S. Z. Chen , T. L. Chen , Y. Chen , P. Creti , S. W. Cui , B. Z. Dai , A. DAmone , Danzengluobu , I. De Mitri , B. DEttorre Piazzoli , T. Di Girolamo , X. H. Ding , G. Di Sciascio , C. F. Feng , Zhaoyang Feng , Zhenyong Feng , Q. B. Gou , Y. Q. Guo , H. H. He , Haibing Hu , Hongbo Hu , Q. Huang , M. Iacovacci , R. Iuppa , H. Y. Jia , Labaciren , H. J. Li , J. Y. Li , X. X. Li , G. Liguori , C. Liu , C. Q. Liu , J. Liu , M. Y. Liu , H. Lu , L. L. Ma , X. H. Ma , G. Mancarella , S. M. Mari , G. Marsella , D. Martello , S. Mastroianni , P. Montini , C. C. Ning , M. Panareo , B. Panico , L. Perrone , P. Pistilli , F. Ruggieri , P. Salvini , R. Santonico , S. N. Sbano , P. R. Shen , X. D. Sheng , F. Shi , A. Surdo , Y. H. Tan , P. Vallania , S. Vernetto , C. Vigorito , B. Wang , H. Wang , C. Y. Wu , H. R. Wu , B. Xu , L. Xue , Q. Y. Yang , X. C. Yang , Z. G. Yao , A. F. Yuan , M. Zha , H. M. Zhang , Jilong Zhang , Jianli Zhang , L. Zhang , P. Zhang , X. Y. Zhang , Y. Zhang , J. Zhao , Zhaxiciren , Zhaxisangzhu , X. X. Zhou , F. R. Zhu , Q. Q. Zhu , G. Zizzi

The Crab Nebula as a standard candle in very high-energy astrophysics

The continuum high-energy gamma-ray emission between 1 GeV and 100 TeV from the Crab Nebula has been measured for the first time in overlapping energy bands by the Fermi large-area telescope (Fermi/LAT) below ~ 100 GeV and by ground-based…

High Energy Astrophysical Phenomena · Physics 2014-10-08 M. Meyer , D. Horns , H. -S. Zechlin

Gamma-ray flares from the Crab Nebula

A young and energetic pulsar powers the well-known Crab Nebula. Here we describe two separate gamma-ray (photon energy >100 MeV) flares from this source detected by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. The…

High Energy Astrophysical Phenomena · Physics 2011-01-11 LAT Collaboration

TACTIC and MACE gamma-ray telescopes

The TACTIC gamma-ray telescope, equipped with a tracking light collector of $\sim$9.5m$^2$ area and a 349-pixel imaging camera has been in operation at Mount Abu in Western India since 2001. Having a sensitivity of detecting the Crab Nebula…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 K. K. Yadav

Search for a TeV Component of GRBs using the Milagrito Detector

Observing gamma ray bursts (GRBs) in the TeV energy range can be extremely valuable in providing insight to GRB radiation mechanisms and in constraining source distances. The Milagrito detector was an air shower array which used the water…

Astrophysics · Physics 2007-05-23 R. Atkins , W. Benbow , D. Berley , M. -L. Chen , D. G. Coyne , R. S. Delay , B. L. Dingus , D. E. Dorfan , R. W. Ellsworth , D. Evans , A. Falcone , L. Fleysher , R. Fleysher , G. Gisler , J. A. Goodman , T. J. Haines , C. M. Hoffman , S. Hugenberger , L. A. Kelley , I. Leonor , J. Macri , M. McConnell , J. F. McCullough , J. E. McEnery , R. S. Miller , A. I. Mincer , M. F. Morales , P. Nemethy , J. M. Ryan , M. Schneider , B. Shen , A. Shoup , G. Sinnis , A. J. Smith , G. W. Sullivan , T. N. Thompson , O. T. Tumer , K. Wang , M. O. Wascko , S. Westerhoff , D. A. Williams , T. Yang , G. B. Yodh

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

Observations of TeV gamma rays from Markarian 501 at large zenith angles

TeV gamma rays from the blazar Markarian 501 have been detected with the University of Durham Mark 6 atmospheric Cerenkov telescope using the imaging technique at large zenith angles. Observations were made at zenith angles in the range 70…

Astrophysics · Physics 2008-11-26 P M Chadwick , K Lyons , T J L McComb , K J Orford , J L Osborne , S M Rayner , S E Shaw , K E Turver

First Detection of Photons with Energy Beyond 100 TeV from an Astrophysical Source

We report on the highest energy photons from the Crab Nebula observed by the Tibet air shower array with the underground water-Cherenkov-type muon detector array. Based on the criterion of muon number measured in an air shower, we…

High Energy Astrophysical Phenomena · Physics 2019-08-06 M. Amenomori , Y. W. Bao , X. J. Bi , D. Chen , T. L. Chen , W. Y. Chen , Xu Chen , Y. Chen , Cirennima , S. W. Cui , Danzengluobu , L. K. Ding , J. H. Fang , K. Fang , C. F. Feng , Zhaoyang Feng , Z. Y. Feng , Qi Gao , Q. B. Gou , Y. Q. Guo , H. H. He , Z. T. He , K. Hibino , N. Hotta , Haibing Hu , H. B. Hu , J. Huang , H. Y. Jia , L. Jiang , H. B. Jin , F. Kajino , K. Kasahara , Y. Katayose , C. Kato , S. Kato , K. Kawata , M. Kozai , Labaciren , G. M. Le , A. F. Li , H. J. Li , W. J. Li , Y. H. Lin , B. Liu , C. Liu , J. S. Liu , M. Y. Liu , Y. -Q. Lou , H. Lu , X. R. Meng , H. Mitsui , K. Munakata , Y. Nakamura , H. Nanjo , M. Nishizawa , M. Ohnishi , I. Ohta , S. Ozawa , X. L. Qian , X. B. Qu , T. Saito , M. Sakata , T. K. Sako , Y. Sengoku , J. Shao , M. Shibata , A. Shiomi , H. Sugimoto , M. Takita , Y. H. Tan , N. Tateyama , S. Torii , H. Tsuchiya , S. Udo , H. Wang , H. R. Wu , L. Xue , K. Yagisawa , Y. Yamamoto , Z. Yang , A. F. Yuan , L. M. Zhai , H. M. Zhang , J. L. Zhang , X. Zhang , X. Y. Zhang , Y. Zhang , Yi Zhang , Ying Zhang , Zhaxisangzhu , X. X. Zhou

The Gamma Ray Detection sensitivity of the upgraded VERITAS Observatory

The VERITAS VHE gamma-ray observatory recently completed a major upgrade of its camera and pattern triggering systems. Bias curve testing of the upgraded VERITAS Observatory under dark sky conditions indicates a 50% increase in photon…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 D. B. Kieda

A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg

Using the HEGRA system of imaging atmospheric Cherenkov telescopes, one quarter of the Galactic plane (-2 deg < l < 85 deg) was surveyed for TeV gamma-ray emission from point sources and moderately extended sources (diameter <= 0.8 deg).…

Astrophysics · Physics 2010-01-28 HEGRA-Collaboration , F. A. Aharonian

Detection of UHE gamma rays from the Crab Nebula: Physical Implications

The Crab Nebula is an extreme particle accelerator boosting the energy of electrons up to a few PeV ($10^{15} \ \rm eV$), close to the maximum energy allowed by theory. The physical conditions in the acceleration site and the nature of the…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Dmitry Khangulyan , Masanori Arakawa , Felix Aharonian

Measurement of the Crab Flux Above 60 GeV with the CELESTE Cherenkov Telescope

We have converted the former solar electrical plant THEMIS (French Pyrenees) into an atmospheric Cherenkov detector called CELESTE, which records gamma rays above 30 GeV (7E24 Hz). Here we present the first sub-100 GeV detection by a ground…

Astrophysics · Physics 2014-10-13 M. De Naurois , J. Holder , R. Bazer-Bachi , H. Bergeret , P. Bruel , A. Cordier , G. Debiais , J-P. Dezalay , D. Dumora , E. Durand , P. Eschstruth , P. Espigat , B. Fabre , P. Fleury , N. Herault , M. Hrabovsky , S. Incerti , R. Le Gallou , F. Munz , A. Musquere , J-F. Olive , E. Pare , J. Quebert , R. C. Rannot , T. Reposeur , L. Rob , P. Roy , T. Sako , P. Schovanek , D. A. Smith , P. Snabre , A. Volte

Measurement of the Crab Nebula Spectrum Past 100 TeV with HAWC

We present TeV gamma-ray observations of the Crab Nebula, the standard reference source in ground-based gamma-ray astronomy, using data from the High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory. In this analysis we use two…

High Energy Astrophysical Phenomena · Physics 2019-09-18 HAWC Collaboration , A. U. Abeysekara , A. Albert , R. Alfaro , C. Alvarez , J. D. Álvarez , J. R. Angeles Camacho , R. Acero , J. C. Arteaga-Velázquez , K. P. Arunbabu , D. Avila Rojas , H. A. Ayala Solares , V. Baghmanyan , E. Belmont-Moreno , S. Y. BenZvi , C. Brisbois , K. S. Cabellero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , U. Cotti , J. Cotzomi , S. Coutiño de León , E. De la Fuente , C. de León , S. Dichiara , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , R. W. Ellsworth , K. Engel , C. Espinoza , B. Fick , H. Fleischhack , N. Fraija , A. Galván-Gámez , J. A. García-González , F. Garfias , M. M. González , J. A. Goodman , J. P. Harding , S. Hernandez , J. Hinton , B. Hona , F. Hueyotl-Zahuantitla , C. M. Hui , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , D. Kieda , A. Lara , W. H. Lee , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , J. Lundeen , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , H. Martínez-Huerta , 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 , A. Peisker , E. G. Pérez-Pérez , J. Pretz , 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 , R. W. Springer , P. Surajbali , E. Tabachnick , M. Tanner , O. Tibolla , K. Tollefson , I. Torres , T. Weisgarber , S. Westerhoff , J. Wood , T. Yapici , A. Zepeda , H. Zhou

H.E.S.S. Observations of the Crab during its March 2013 GeV Gamma-Ray Flare

Context. On March 4, 2013, the Fermi-LAT and AGILE reported a flare from the direction of the Crab Nebula in which the high-energy (HE; E > 100 MeV) flux was six times above its quiescent level. Simultaneous observations in other energy…

High Energy Astrophysical Phenomena · Physics 2014-02-20 H. E. S. S. Collaboration , A. Abramowski , F. Aharonian , F. Ait Benkhali , A. G. Akhperjanian , E. Angüner , G. Anton , S. Balenderan , A. Balzer , A. Barnacka , Y. Becherini , J. Becker Tjus , K. Bernlöhr , E. Birsin , E. Bissaldi , J. Biteau , M. Böttcher , C. Boisson , J. Bolmont , P. Bordas , J. Brucker , F. Brun , P. Brun , T. Bulik , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , R. Chalme-Calvet , R. C. G. Chaves , A. Cheesebrough , M. Chrétien , S. Colafrancesco , G. Cologna , J. Conrad , C. Couturier , Y. Cui , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , P. deWilt , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , T. Edwards , K. Egberts , P. Eger , P. Espigat , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , D. Fernandez , A. Fiasson , G. Fontaine , A. Förster , M. Füßling , M. Gajdus , Y. A. Gallant , T. Garrigoux , G. Giavitto , B. Giebels , J. F. Glicenstein , M. -H. Grondin , M. Grudzińska , S. Häffner , J. Hahn , J. Harris , G. Heinzelmann , G. Henri , G. Hermann , O. Hervet , A. Hillert , J. A. Hinton , W. Hofmann , P. Hofverberg , M. Holler , D. Horns , A. Jacholkowska , C. Jahn , M. Jamrozy , M. Janiak , F. Jankowsky , I. Jung , M. A. Kastendieck , K. Katarzyński , U. Katz , S. Kaufmann , B. Khélifi , M. Kieffer , S. Klepser , D. Klochkov , W. Kluźniak , T. Kneiske , D. Kolitzus , Nu. Komin , K. Kosack , S. Krakau , F. Krayzel , P. P. Krüger , H. Laffon , G. Lamanna , J. Lefaucheur , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , R. Marx , G. Maurin , N. Maxted , M. Mayer , T. J. L. McComb , J. Méhault , P. J. Meintjes , U. Menzler , M. Meyer , R. Moderski , M. Mohamed , E. Moulin , T. Murach , C. L. Naumann , M. de Naurois , J. Niemiec , S. J. Nolan , L. Oakes , S. Ohm , E. de Oña Wilhelmi , B. Opitz , M. Ostrowski , I. Oya , M. Panter , R. D. Parsons , M. Paz Arribas , N. W. Pekeur , G. Pelletier , J. Perez , P. -O. Petrucci , B. Peyaud , S. Pita , H. Poon , G. Pühlhofer , M. Punch , A. Quirrenbach , S. Raab , M. Raue , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , L. Rob , C. Romoli , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , V. Sahakian , D. A. Sanchez , A. Santangelo , R. Schlickeiser , F. Schüssler , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , H. Sol , G. Spengler , F. Spies , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , K. Stycz , I. Sushch , A. Szostek , J. -P. Tavernet , T. Tavernier , A. M. Taylor , R. Terrier , M. Tluczykont , C. Trichard , K. Valerius , C. van Eldik , B. van Soelen , G. Vasileiadis , C. Venter , A. Viana , P. Vincent , H. J. Völk , F. Volpe , M. Vorster , T. Vuillaume , S. J. Wagner , P. Wagner , M. Ward , M. Weidinger , Q. Weitzel , R. White , A. Wierzcholska , P. Willmann , A. Wörnlein , D. Wouters , V. Zabalza , M. Zacharias , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin

The variable Crab Nebula

The remarkable Crab Nebula is powered by an energetic pulsar whose relativistic wind interacts with the inner parts of the Supernova Remnant SN1054. Despite low-intensity optical and X-ray variations in the inner Nebula, the Crab has been…

High Energy Astrophysical Phenomena · Physics 2011-06-07 Marco Tavani

The Crab Nebula at 850 microns

Observations of the Crab Nebula at 850 micron made with the "Submillimetre Common-User Bolometer Array" (SCUBA) on the James Clerk Maxwell Telescope are presented. A variety of chop-throws and scanning directions was used in these…

Astrophysics · Physics 2007-05-23 D. A. Green

Ultra-High-Energy Gamma-Ray Astronomy

Ultra-High Energy (UHE, $>$0.1\,PeV) $\gamma$-ray Astronomy is rapidly evolving into an expanding branch of the $\gamma$-ray astronomy with the surprising discovery of 12 PeVatrons and the detection of a handful of photons above 1 PeV.…

High Energy Astrophysical Phenomena · Physics 2023-10-04 Zhen Cao , Songzhan Chen , Ruoyu Liu , Ruizhi Yang

Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined Fermi-LAT and H.E.S.S. analysis

The Crab Nebula is a unique laboratory for studying the acceleration of electrons and positrons through their non-thermal radiation. Observations of very-high-energy $\gamma$ rays from the Crab Nebula have provided important constraints for…

High Energy Astrophysical Phenomena · Physics 2024-06-26 F. Aharonian , F. Ait Benkhali , J. Aschersleben , H. Ashkar , M. Backes , A. Baktash , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , K. Bernlöhr , B. Bi , M. Böttcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , J. Borowska , F. Bradascio , M. Breuhaus , R. Brose , A. Brown , F. Brun , B. Bruno , T. Bulik , C. Burger-Scheidlin , T. Bylund , S. Caroff , S. Casanova , R. Cecil , J. Celic , M. Cerruti , P. Chambery , T. Chand , S. Chandra , A. Chen , J. Chibueze , O. Chibueze , G. Cotter , P. Cristofari , J. Devin , A. Djannati-Ataï , J. Djuvsland , A. Dmytriiev , S. Einecke , J. -P. Ernenwein , S. Fegan , K. Feijen , M. Filipović , G. Fontaine , M. Füßling , S. Funk , S. Gabici , Y. A. Gallant , G. Giavitto , D. Glawion , J. F. Glicenstein , J. Glombitza , P. Goswami , G. Grolleron , M. -H. Grondin , L. Haerer , J. A. Hinton , W. Hofmann , T. L. Holch , M. Holler , D. Horns , M. Jamrozy , F. Jankowsky , V. Joshi , E. Kasai , K. Katarzyński , R. Khatoon , B. Khélifi , W. Kluźniak , Nu. Komin , K. Kosack , D. Kostunin , A. Kundu , R. G. Lang , S. Le Stum , F. Leitl , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , F. Leuschner , A. Luashvili , J. Mackey , D. Malyshev , D. Malyshev , V. Marandon , P. Marinos , G. Martí-Devesa , R. Marx , A. Mehta , M. Meyer , A. Mitchell , R. Moderski , L. Mohrmann , A. Montanari , E. Moulin , T. Murach , M. de Naurois , J. Niemiec , P. O'Brien , S. Ohm , L. Olivera-Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , M. Panter , R. D. Parsons , G. Peron , D. A. Prokhorov , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Regeard , P. Reichherzer , A. Reimer , O. Reimer , H. Ren , M. Renaud , B. Reville , F. Rieger , G. Roellinghoff , B. Rudak , V. Sahakian , H. Salzmann , M. Sasaki , F. Schüssler , H. M. Schutte , J. N. S. Shapopi , A. Specovius , S. Spencer , Ł. Stawarz , R. Steenkamp , S. Steinmassl , C. Steppa , K. Streil , I. Sushch , H. Suzuki , T. Takahashi , T. Tanaka , R. Terrier , M. Tluczykont , N. Tsuji , T. Unbehaun , C. van Eldik , M. Vecchi , J. Veh , C. Venter , J. Vink , T. Wach , S. J. Wagner , A. Wierzcholska , M. Zacharias , D. Zargaryan , A. A. Zdziarski , A. Zech , S. Zouari , N. Żywucka , A. Harding

SS-433/W50 at TeV Energies

The HEGRA CT-System was used to search for TeV gamma-rays from the microquasar and supernova remnant combination SS-433/W50 over the 1998 and 1999 observing seasons, resulting in about 20 hours of useful data. An analysis of various…

Astrophysics · Physics 2007-05-23 G. P. Rowell , HEGRA Collaboration

A Search for Short-term Variability in the Very High Energy Gamma-ray Emission from the Crab Nebula

The Crab Nebula has long been considered a standard candle in high energy astrophysics, but in recent years this assumption has been strongly contradicted in keV-GeV wavebands. In light of these developments, a search for variability is…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Anna O'Faoláin de Bhróithe