Related papers: Energy Spectrum of TeV Gamma-Rays from Crab Nebula

The Energy Spectrum of TeV Gamma-Rays from the Crab Nebula as measured by the HEGRA system of imaging air Cherenkov telescopes

The Crab Nebula has been observed by the HEGRA (High-Energy Gamma-Ray Astronomy) stereoscopic system of imaging air Cherenkov telescopes (IACTs) for a total of about 200 hrs during two observational campaigns: from September 1997 to March…

Astrophysics · Physics 2009-10-31 F. Aharonian , The HEGRA Collaboration

Spectrum of TeV Gamma-Rays from the Crab Nebula

The Crab Nebula has become established as the standard candle for TeV gamma-ray astronomy using the atmospheric Cherenkov technique. No evidence for variability has been seen. The spectrum of gamma rays from the Crab Nebula has been…

Astrophysics · Physics 2007-05-23 D. A. Carter-Lewis , S. Biller , P. J. Boyle , J. H. Buckley , A. Burdett , J. Bussons Gordo , M. A. Catanese , M. F. Cawley , D. J. Fegan , J. P. Finley , J. A. Gaidos , A. M. Hillas , F. Krennrich , R. C. Lamb , R. W. Lessard , C. Masterson , J. E. McEnery , G. Mohanty , J. Quinn , A. J. Rodgers , H. J. Rose , F. W. Samuelson , G. H. Sembroski , R. Srinivasan , T. C. Weekes , M. West , J. A. Zweerink

Observations of the Crab Nebula with the HEGRA system of IACTs in convergent mode using a topological trigger

Routine observations of the Crab Nebula for a total of about 250 hrs, performed with the HEGRA stereoscopic system of 5 imaging atmospheric Cerenkov telescopes in the standard operational mode, have proven the energy threshold of the system…

Astrophysics · Physics 2009-11-07 F. Lucarelli , A. Konopelko , F. Aharonian , W. Hofmann , A. Kohnle , H. Lampeitl , V. Fonseca

Detection of Gamma Rays of Up to 50 TeV From the Crab Nebula

Gamma rays with energies greater than 7 TeV from the Crab pulsar/nebula have been observed at large zenith angles, using the Imaging Atmospheric Technique from Woomera, South Australia. CANGAROO data taken in 1992, 1993 and 1995 indicate…

Astrophysics · Physics 2010-11-24 T. Tanimori , K. Sakurazawa , S. A. Dazeley , P. G. Edwards , T. Hara , Y. Hayami , S. Kamei , R. Kita , T. Kifune , T. Konishi , A. Masaike , Y. Matsubara , Y. Mizumoto , M. Mori , H. Muraishi , Y. Muraki , T. Naito , K. Nishijima , S. Ogio , J. R. Patterson , M. D. Roberts , G. P. Rowell , T. Sako , R. Susukita , A. Suzuki , R. Suzuki , T. Tamura , G. J. Thornton , S. Yanagita , T. Yoshida , T. Yoshikoshi

Observations of the Crab Nebula with the Whipple 10 m Telescope

Due to the strong and steady TeV gamma-ray emission from the Crab Nebula supernova remnant, its measured flux and energy spectrum can be used to verify the calibration and data reduction methods applied to IACT data acquired over many…

Astrophysics · Physics 2007-09-28 VERITAS Collaboration , J. Grube

Measurement of the flux, spectrum, and variability of TeV gamma-rays from Mkn 501 during a state of high activity

Between March 16, 1997 and April 14, 1997, a high flux level of TeV gamma-rays was observed from Mkn 501, using the HEGRA stereoscopic system of four imaging Cherenkov telescopes. The flux level varied during this period from about one half…

Astrophysics · Physics 2012-08-27 HEGRA-Collaboration , : , F. Aharonian et al

Observation of the Crab Nebula with the MAGIC telescope

We report about very high energy (VHE) gamma-ray observations of the Crab Nebula with the MAGIC telescope. The gamma-ray flux from the nebula was measured between 60 GeV and 9 TeV. The energy spectrum can be described with a curved power…

Astrophysics · Physics 2019-08-13 A. Nepomuk Otte

The Crab Nebula and Pulsar between 500 GeV and 80 TeV: Observations with the HEGRA stereoscopic air Cherenkov telescopes

The Crab supernova remnant has been observed regularly with the stereoscopic system of 5 imaging air Cherenkov telescopes that was part of the High Energy Gamma Ray Astronomy (HEGRA) experiment. In total, close to 400 hours of useful data…

Astrophysics · Physics 2010-01-28 F. Aharonian et al.

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

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 new TeV instruments. The High Altitude Water Cherenkov…

High Energy Astrophysical Phenomena · Physics 2017-07-05 A. U. Abeysekara , A. Albert , R. Alfaro , C. Alvarez , J. D. Álvarez , R. Arceo , J. C. Arteaga-Velázquez , H. A. Ayala Solares , A. S. Barber , N. Bautista-Elivar , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , D. Berley , J. Braun , C. Brisbois , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , M. Castillo , U. Cotti , J. Cotzomi , S. Coutiño de León , E. de la Fuente , C. De León , T. DeYoung , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , R. W. Ellsworth , D. W. Fiorino , N. Fraija , J. A. García-González , M. Gerhardt , A. González Munoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , A. Hernandez-Almada , J. Hinton , C. M. Hui , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , D. Kieda , A. Lara , R. J. Lauer , W. H. Lee , D. Lennarz , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis Raya , R. Luna-García , 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 , H. Salazar , 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 , I. G. Wisher , J. Wood , T. Yapici , G. B. Yodh , P. W. Younk , A. Zepeda , H. Zhou

First Results on the Performance of the HEGRA IACT Array

First results concerning the performance characteristics of the HEGRA IACT array are given, based on stereoscopic observations of the Crab Nebula with four telescopes. The system provides a gamma-ray energy threshold around 0.5 TeV. The…

Astrophysics · Physics 2007-05-23 HEGRA Collaboration , A. Daum et al

The Crab Nebula Spectrum at ~100 TeV Measured with MAGIC under Very Large Zenith Angles

The Crab Nebula was discovered as the first very-high-energy gamma-ray source by the Whipple Observatory in 1989. Thirty years after its discovery it is still the reference source and the standard candle for Imaging Atmospheric Cherenkov…

Instrumentation and Methods for Astrophysics · Physics 2019-09-13 Michele Peresano , Razmik Mirzoyan , Ievgen Vovk , Petar Temnikov , Darko Zarić , Nikola Godinović , Juliane van Scherpenberg , Jüergen Besenrieder

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

Observation of Spectrum of TeV Gamma Rays up to 60 TeV from the Crab at the Large Zenith Angles

The CANGAROO experiment has observed gamma-ray above 7TeV from the Crab pulsar/nebula at large zenith angle in Woomera, South Australia. We report the CANGAROO data taken in 1992, 1993 and 1995, from which it appears that the energy…

Astrophysics · Physics 2019-08-17 K. Sakurazawa , T. Tanimori , S. A. Dazeley , P. G. Edwards , T. Hara , S. Kamei , T. Kifune , R. Kita , T. Konishi , A. Masaike , Y. Matsubara , Y. Matsuoka , Y. Mizumoto , M. Mori , H. Muraishi , Y. Muraki , T. Naito , K. Nishijima , S. Ogio , J. R. Patterson , M. D. Roberts , G. P. Rowell , T. Sako , R. Susukita , A. Suzuki , R. Suzuki , T. Tamura , G. J. Thornton , S. Yanagita , T. Yoshida , T. Yoshikoshi

Observations of the Crab Nebula with MACE (Major Atmospheric Cherenkov Experiment)

The Major Atmospheric Cherenkov Experiment (MACE) is a large size (21m) Imaging Atmospheric Cherenkov Telescope (IACT) installed at an altitude of 4270m above sea level at Hanle, Ladakh in northern India. Here we report the detection of…

High Energy Astrophysical Phenomena · Physics 2024-04-03 Borwankar C. , Sharma M. , Hariharan J. , Venugopal K. , Godambe S. , Mankuzhyil N. , Chandra P. , Khurana M. , Pathania A. , Chouhan N. , Dhar V. K. , Thubstan R. , Norlha S. , Keshavananda , Sarkar D. , Dar Z. A. , Kotwal S. V. , Godiyal S. , Kushwaha C. P. , Singh K. K. , Das M. P. , Tolamatti A. , Ghosal B. , Chanchalani K. , Pandey P. , Bhatt N. , Bhattcharyya S. , Sahayanathan S. , Koul M. K. , Dorjey P. , Dorji N. , Chitnis V. R. , Tickoo A. K. , Rannot R. C. , Yadav K. K

Observation and Spectral Measurements of the Crab Nebula with Milagro

The Crab Nebula was detected with the Milagro experiment at a statistical significance of 17 standard deviations over the lifetime of the experiment. The experiment was sensitive to approximately 100 GeV - 100 TeV gamma ray air showers by…

High Energy Astrophysical Phenomena · Physics 2015-05-30 A. A. Abdo , B. T. Allen , T. Aune , W. Benbow , D. Berley , C. Chen , G. E. Christopher , T. DeYoung , B. L. Dingus , R. W. Ellsworth , A. Falcone , L. Fleysher , R. Fleysher , M. M. Gonzalez , J. A. Goodman , J. B. Gordo , E. Hays , C. M. Hoffman , P. H. Huentemeyer , B. E. Kolterman , J. T. Linnemann , J. E. McEnery , T. Morgan , A. I. Mincer , P. Nemethy , J. Pretz , J. M. Ryan , P. M. Saz Parkinson , A. Shoup , G. Sinnis , A. J. Smith , V. Vasileiou , G. P. Walker , D. A. Williams , and G. B. Yodh

The Temporal Characteristics of the TeV Gamma-Radiation from Mkn 501 in 1997, I: Data from the Stereoscopic Imaging Atmospheric Cherenkov Telescope System of HEGRA

During 1997, the BL Lac Object Mkn 501 was the brightest known object in the TeV gamma-ray sky. The emission was characterized by dramatic variations in intensity with a mean flux exceeding by a factor of three the steady gamma-ray flux of…

Astrophysics · Physics 2007-05-23 F. Aharonian

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

We present results from daily monitoring of gamma rays in the energy range $\sim0.5$ to $\sim100$ TeV with the first 17 months of data from the High Altitude Water Cherenkov (HAWC) Observatory. Its wide field of view of 2 steradians and…

High Energy Astrophysical Phenomena · Physics 2017-06-14 A. U. Abeysekara , A. Albert , R. Alfaro , C. Alvarez , J. D. Álvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , A. S. Barber , N. Bautista-Elivar , J. Becerra Gonzalez , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , A. Bernal , J. Braun , 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 , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , R. W. Ellsworth , K. Engel , D. W. Fiorino , N. Fraija , J. A. García-González , F. Garfias , M. Gerhardt , A. González Muñoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , A. Hernandez-Almada , B. Hona , C. M. Hui , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , D. Kieda , A. Lara , R. J. Lauer , W. H. Lee , D. Lennarz , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis Raya , R. Luna-García , R. López-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , 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 , 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 , G. Vianello , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , T. Yapici , P. W. Younk , A. Zepeda , H. Zhou

VHE Gamma-Ray Observation of the Crab Nebula and its Pulsar with the MAGIC telescope

We report about very high energy (VHE) gamma-ray observations of the Crab Nebula with the MAGIC telescope. The gamma-ray flux from the nebula was measured between 60 GeV and 9 TeV. The energy spectrum can be described with a curved power…

Astrophysics · Physics 2009-06-23 MAGIC Collaboration , J. Albert

The TeV Energy Spectrum of Mkn 501 Measured with the Stereoscopic Telescope System of HEGRA during 1998 and 1999

During 1997, the BL Lac object Mkn 501 went into an extraordinary state of high X-ray and TeV gamma-ray activity, lasting more than 6 months. In this paper we report on the TeV emission characteristics of the source in the subsequent years…

Astrophysics · Physics 2018-04-18 The HEGRA Collaboration , F. Aharonian , A. Akhperjanian , J. Barrio

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