Related papers: Is the Giant Radio Galaxy M87 a TeV Gamma-Ray Emit…

Observation of the giant radio galaxy M87 at TeV energies with H.E.S.S

The giant radio galaxy M 87 was observed at TeV energies with the Cherenkov telescopes of the H.E.S.S. collaboration (High Energy Stereoscopic System). The observations have been performed in the year 2003 during the comissioning phase and…

Astrophysics · Physics 2019-08-15 M. Beilicke , W. Benbow , R. Cornils , G. Heinzelmann , D. Horns , M. Raue , J. Ripken , M. Tluczykont

Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87

We report the Fermi-LAT discovery of high-energy (MeV/GeV) gamma-ray emission positionally consistent with the center of the radio galaxy M87, at a source significance of over 10 sigma in ten-months of all-sky survey data. Following the…

High Energy Astrophysical Phenomena · Physics 2009-12-04 The Fermi LAT Collaboration , A. A. Abdo , D. E. Harris , F. Massaro , L. Stawarz

Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS

The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in Active Galactic Nuclei from radio waves to TeV gamma-rays. Here we report the detection of gamma-ray…

Astrophysics · Physics 2009-11-13 V. A. Acciari , M. Beilicke , G. Blaylock , S. M. Bradbury , J. H. Buckley , V. Bugaev , Y. Butt , O. Celik , A. Cesarini , L. Ciupik , P. Cogan , P. Colin , W. Cui , M. K. Daniel , C. Duke , T. Ergin , A. D. Falcone , S. J. Fegan , J. P. Finley , G. Finnegan , P. Fortin , L. F. Fortson , K. Gibbs , G. H. Gillanders , J. Grube , R. Guenette , G. Gyuk , D. Hanna , E. Hays , J. Holder , D. Horan , S. B. Hughes , M. C. Hui , T. B. Humensky , A. Imran , P. Kaaret , M. Kertzman , D. B. Kieda , J. Kildea , A. Konopelko , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , K. Lee , G. Maier , A. McCann , M. McCutcheon , J. Millis , P. Moriarty , R. Mukherjee , T. Nagai , R. A. Ong , D. Pandel , J. S. Perkins , M. Pohl , J. Quinn , K. Ragan , P. T. Reynolds , H. J. Rose , M. Schroedter , G. H. Sembroski , A. W. Smith , D. Steele , S. P. Swordy , A. Syson J. A. Toner , L. Valcarcel , V. V. Vassiliev , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , R. J. White , D. A. Williams , S. A. Wissel , M. D. Wood , B. Zitzer

Observation of M87 with VERITAS

The giant radio galaxy M87 is the only extragalactic non-blazar object which has been detected as a source of very high energy gamma-rays. It represents a unique opportunity to study the phenomena of gamma-ray emission from a nearby AGN. In…

Astrophysics · Physics 2007-09-25 Pierre Colin

Modeling the non-flaring VHE emission from M87 as detected by the HAWC gamma ray observatory

M87 is a giant radio galaxy located in the Virgo Cluster, known to be a very high energy (VHE) gamma-ray source. As radio galaxies are considered the misaligned low-redshift counterparts of blazars, they are excellent laboratories for…

High Energy Astrophysical Phenomena · Physics 2021-08-03 Fernando Ureña-Mena , Alberto Carramiñana , Anna Lia Longinotti , Daniel Rosa-González

M87 as a misaligned Synchrotron-Proton Blazar

The giant radio galaxy M87 is usually classified as a Fanaroff-Riley class I source, suggesting that M87 is a mis-aligned BL Lac object. Its unresolved nuclear region emits strong non-thermal emission from radio to X-rays which has been…

Astrophysics · Physics 2009-11-10 A. Reimer , R. J. Protheroe , A. -C. Donea

Observation of radio galaxies with HAWC

The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is an extensive air shower array located in Puebla, Mexico. The closest radio galaxy within the HAWC field of view, M87, has been detected in very high energies. In this work we…

High Energy Astrophysical Phenomena · Physics 2019-08-15 Daniel Avila Rojas , Rubén Alfaro , Antonio Galván , María Magdalena González , Nissim Fraija , Marc Klinger

Fast variability of TeV gamma-rays from the radio galaxy M 87

The detection of fast variations of the TeV (10^12 eV) gamma-ray flux, on time-scales of days, from the nearby radio galaxy M 87 is reported. These variations are ~10 times faster than that observed in any other waveband and imply a very…

Astrophysics · Physics 2008-11-26 HESS Collaboration , F. A. Aharonian

Longtime Monitoring of TeV Radio Galaxies with HAWC

We present the monitoring of the TeV-emitting radio galaxies M87, NGC~1275, 3C~264, and IC~310 with the High Altitude Water Cherenkov Observatory (HAWC) over a period of approximately $7.5$ years. The analysis includes light curves at…

High Energy Astrophysical Phenomena · Physics 2025-06-23 R. Alfaro , C. Alvarez , E. Anita-Rangel , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , P. Bangale , E. Belmont-Moreno , A. Bernal , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , F. Carreón , S. Casanova , U. Cotti , J. Cotzomi , S. Coutiño de León , 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 , N. Fraija , S. Fraija , J. A. García-González , F. Garfias , A. Gonzalez Muñoz , M. M. González , J. A. González , J. A. Goodman , S. Groetsch , J. P. Harding , I. Herzog , D. Huang , F. Hueyotl-Zahuantitla , A. Iriarte , S. Kaufmann , D. Kieda , A. Lara , 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 , M. Najafi , A. Nayerhoda , L. Nellen , N. Omodei , M. Osorio-Archila , E. Ponce , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , A. Rodriguez Parra , D. Rosa-González , M. Roth , H. Salazar , A. Sandoval , M. Schneider , J. Serna-Franco , 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

Study of the Very High Energy emission of M87 through its broadband spectral energy distribution

The radio galaxy M87 is the central dominant galaxy of the Virgo Cluster. Very High Energy (VHE,$\gtrsim 0.1$ TeV) emission, from M87 has been detected by Imaging Air Cherenkov Telescopes (IACTs ). Recently, marginal evidence for VHE…

High Energy Astrophysical Phenomena · Physics 2021-12-20 HAWC Collaboration , R. Alfaro , C. Alvarez , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , E. Belmont-Moreno , T. Capistrán , A. Carramiñana , S. Casanova , U. Cotti , 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 , 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 , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , V. Joshi , 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 , E. Moreno , M. Mostafá , A. Nayerhoda , L. Nellen , R. Noriega-Papaqui , N. Omodei , A. Peisker , E. G. Pérez-Pérez , C. D. Rho , D. Rosa-González , H. Salazar , D. Salazar-Gallegos , F. Salesa Greus , A. Sandoval , J. Serna-Franco , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , F. Ureña-Mena , L. Villaseñor , X. Wang , E. Willox , A. Zepeda

Pinpointing the TeV gamma-ray emission region in M87 using TeV and 43 GHz radio monitoring

The TeV radio galaxy M87 is the first radio galaxy detected in the TeV regime. The structure of its jet, which is not pointing towards our line of sight, is spatially resolved in X-ray (by Chandra), optical and radio observations. In 2008,…

High Energy Astrophysical Phenomena · Physics 2019-08-15 R. M. Wagner , M. Beilicke , F. Davies , P. Hardee , H. Krawczynski , D. Mazin , R. C. Walker , M. Raue , S. Wagner , C. Ly , W. Junor

VERITAS Observations of M 87 in 2011/2012

The giant radio galaxy M 87 is located at a distance of 16.7 Mpc and harbors a super-massive black hole (6 billion solar masses) in its center. M 87 is one of just three radio galaxies known to emit TeV gamma-rays. The structure of its…

High Energy Astrophysical Phenomena · Physics 2015-06-11 M. Beilicke , the VERITAS Collaboration

Hadronic-origin TeV flare of M87 in April 2010

M87 is a giant radio galaxy with FR-I morphology. It underwent three episodes of TeV flaring in recent years with the strongest one in April 2010 which was jointly monitored by MAGIC, VERITAS and H.E.S.S. We explain its spectral energy…

High Energy Astrophysical Phenomena · Physics 2013-10-09 Sarira Sahu , Eddie Palacios

Very High Energy Gamma-Ray Observations of a Strong Flaring Activity in M87 in 2008 February

M87 is the only known non blazar radio galaxy to emit very high energy (VHE) gamma-rays. During a monitoring program of M87, a rapid flare in VHE gamma-rays was detected by the MAGIC telescope in early 2008. The flux was found to be…

Astrophysics · Physics 2011-02-11 MAGIC Collaboration , J. Albert

Production of TeV gamma-radiation in the vicinity of the supermassive black hole in the giant radiogalaxy M87

Although the giant radiogalaxy M 87 harbors many distinct regions of broad-band nonthermal emission, the recently reported fast variability of TeV gamma rays from M 87 on a timescale of days strongly constrains the range of speculations…

Astrophysics · Physics 2009-11-13 A. Neronov , F. Aharonian

Monitoring of the radio galaxy M87 during a low emission state from 2012 to 2015 with MAGIC

M87 is one of the closest (z=0.00436) extragalactic sources emitting at very-high-energies (VHE, E > 100 GeV). The aim of this work is to locate the region of the VHE gamma-ray emission and to describe the observed broadband spectral energy…

High Energy Astrophysical Phenomena · Physics 2020-08-04 MAGIC Collaboration , V. A. Acciari , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , C. Arcaro , D. Baack , A. Babić , B. Banerjee , P. Bangale , U. Barres de Almeida , J. A. Barrio , J. Becerra González , W. Bednarek , L. Bellizzi , E. Bernardini , A. Berti , J. Besenrieder , W. Bhattacharyya , C. Bigongiari , A. Biland , O. Blanch , G. Bonnoli , Ž. Bošnjak , G. Busetto , R. Carosi , G. Ceribella , Y. Chai , A. Chilingaryan , S. Cikota , S. M. Colak , U. Colin , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , V. D'Elia , P. Da Vela , F. Dazzi , A. De Angelis , B. De Lotto , M. Delfino , J. Delgado , D. Depaoli , F. Di Pierro , L. Di Venere , E. Do Souto Espiñeira , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , D. Elsaesser , V. Fallah Ramazani , A. Fattorini , A. Fernández-Barral , G. Ferrara , D. Fidalgo , L. Foffano , M. V. Fonseca , L. Font , C. Fruck , S. Fukami , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , N. Giglietto , F. Giordano , N. Godinović , D. Green , D. Guberman , D. Hadasch , A. Hahn , J. Herrera , J. Hoang , D. Hrupec , M. Hütten , T. Inada , S. Inoue , K. Ishio , Y. Iwamura , L. Jouvin , D. Kerszberg , H. Kubo , J. Kushida , A. Lamastra , D. Lelas , F. Leone , E. Lindfors , S. Lombardi , F. Longo , M. López , R. López-Coto , A. López-Oramas , S. Loporchio , B. Machado de Oliveira Fraga , C. Maggio , P. Majumdar , M. Makariev , M. Mallamaci , G. Maneva , M. Manganaro , K. Mannheim , L. Maraschi , M. Mariotti , M. Martínez , S. Masuda , D. Mazin , S. Mićanović , D. Miceli , M. Minev , J. M. Miranda , R. Mirzoyan , E. Molina , A. Moralejo , D. Morcuende , V. Moreno , E. Moretti , P. Munar-Adrover , V. Neustroev , C. Nigro , K. Nilsson , D. Ninci , K. Nishijima , K. Noda , L. Nogués , M. Nöthe , S. Nozaki , S. Paiano , J. Palacio , M. Palatiello , D. Paneque , R. Paoletti , J. M. Paredes , P. Peñil , M. Peresano , M. Persic , P. G. Prada Moroni , E. Prandini , I. Puljak , W. Rhode , M. Ribó , J. Rico , C. Righi , A. Rugliancich , L. Saha , N. Sahakyan , T. Saito , S. Sakurai , K. Satalecka , K. Schmidt , T. Schweizer , J. Sitarek , I. Šnidarić , D. Sobczynska , A. Somero , A. Stamerra , D. Strom , M. Strzys , Y. Suda , T. Surić , M. Takahashi , F. Tavecchio , P. Temnikov , T. Terzić , M. Teshima , N. Torres-Albà , L. Tosti , S. Tsujimoto , V. Vagelli , J. van Scherpenberg , G. Vanzo , M. Vazquez Acosta , C. F. Vigorito , V. Vitale , I. Vovk , M. Will , D. Zarić , MWL Collaborators , : , K. Asano , K. Hada , D. E. Harris , M. Giroletti , H. E. Jermak , J. P. Madrid , F. Massaro , S. Richter , F. Spanier , I. A. Steele , R. C. Walker

VERITAS Observation of M 87

The giant radio galaxy M 87 is located at a distance of ~16 Mpc and harbors a supermassive black hole in its center. The structure of its relativistic plasma jet is resolved at radio, optical and X-ray wavelengths. M 87 belongs to the class…

High Energy Astrophysical Phenomena · Physics 2011-11-02 Nicola Galante

Detection of very high-energy gamma-ray emission from the radio galaxy M87 with LHAASO

The nearby radio galaxy M87 is a very-high-energy (VHE) gamma-ray emitter established by observations with ground-based gamma-ray detectors. Here we report the long-term monitoring of M87 from 2021 to 2024 with Large High Altitude Air…

High Energy Astrophysical Phenomena · Physics 2025-12-29 Zhen Cao , F. Aharonian , Axikegu , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , W. Bian , A. V. Bukevich , Q. Cao , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , H. X. Chen , Liang Chen , Lin Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. C. Chu , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , J. H. Fang , K. Fang , C. F. Feng , H. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , T. T. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , J. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , O. A. Hannuksela , M. Hasan , H. H. He , H. N. He , J. Y. He , Y. He , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , Q. Hu , S. C. Hu , C. Huang , D. H. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Y. Y. Huang , X. L. Ji , H. Y. Jia , K. Jia , H. B. Jiang , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , M. M. Kang , I. Karpikov , D. Khangulyan , D. Kuleshov , K. Kurinov , B. B. Li , C. M. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , Jian Li , Jie Li , K. Li , S. D. 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 , D. B. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , Q. Luo , Y. 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 , K. C. Y. Ng , L. J. Ou , P. Pattarakijwanich , Z. Y. Pei , J. C. Qi , M. Y. Qi , B. Q. Qiao , J. J. Qin , A. Raza , D. Ruffolo , A. Sáiz , M. Saeed , D. Semikoz , L. Shao , O. Shchegolev , X. D. Sheng , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , D. X. Sun , Q. N. Sun , X. N. Sun , Z. B. Sun , J. Takata , P. H. T. Tam , Q. W. Tang , R. Tang , Z. B. Tang , W. W. Tian , L. H. Wan , C. Wang , C. B. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , Kai Wang , Kai 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 , Q. W. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , Y. L. Xin , Y. Xing , D. R. Xiong , 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 , C. Y. Yang , F. Yang , F. F. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , W. X. Yang , Y. H. Yao , Z. G. Yao , 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. Zhang , H. M. Zhang , H. Y. Zhang , J. L. 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 , X. H. Zhao , F. Zheng , W. J. Zhong , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , X. X. Zhou , B. Y. Zhu , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , Y. C. Zou , X. Zuo

Search for TeV gamma ray emission from the Andromeda galaxy

Using the HEGRA system of imaging atmospheric Cherenkov telescopes, the Andromeda galaxy (M31) was surveyed for TeV gamma ray emission. Given the large field of view of the HEGRA telescopes, three pointings were sufficient to cover all of…

Astrophysics · Physics 2008-11-26 the HEGRA Collaboration , F. Aharonian

A strong radio brightening at the jet base of M87 in the period of the elevated TeV gamma-ray state in 2012

The nearby radio galaxy M87 offers a unique opportunity for exploring the connection between gamma-ray production and jet formation at an unprecedented linear resolution. However, the origin and location of the gamma-rays in this source is…

High Energy Astrophysical Phenomena · Physics 2015-02-19 K. Hada , M. Giroletti , M. Kino , G. Giovannini , F. D'Ammando , C. C. Cheung , M. Beilicke , H. Nagai , A. Doi , K. Akiyama , M. Honma , K. Niinuma , C. Casadio , M. Orienti , H. Krawczynski , J. L. Gomez , S. Sawada-Satoh , S. Koyama , A. Cesarini , S. Nakahara , M. A. Gurwell