相关论文: SST-1M Observations of Markarian 421

Fermi Observations of Blazars: Implications for Gamma-ray Production

The brightest blazars detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (Fermi/LAT) show significant breaks in their spectra at a few GeV. The sharpness and the position of the breaks can be well reproduced by absorption…

宇宙学与河外天体物理 · 物理学 2012-02-08 Juri Poutanen , Boris E. Stern

Multiwavelength Observations of a Flare from Markarian 501

We present multiwavelength observations of the BL Lacertae object Markarian 501 (Mrk 501) in 1997 between April 8 and April 19. Evidence of correlated variability is seen in very high energy (VHE, E > 350 GeV) gamma-ray observations taken…

天体物理学 · 物理学 2009-10-30 M. Catanese , S. M. Bradbury , A. C. Breslin , J. H. Buckley , D. A. Carter-Lewis , M. F. Cawley , C. D. Dermer , D. J. Fegan , J. P. Finley , J. A. Gaidos , A. M. Hillas , W. N. Johnson , F. Krennrich , R. C. Lamb , R. W. Lessard , D. J. Macomb , J. E. McEnery , P. Moriarty , J. Quinn , A. J. Rodgers , H. J. Rose , F. W. Samuelson , G. H. Sembroski , R. Srinivasan , T. C. Weekes , J. Zweerink

News from a Multi-Wavelength Monitoring Campaign on Mrk 421

We conducted a daily monitoring campaign on Mrk 421 in 2003 and 2004 with the Whipple 10 m telescope and the large-area instruments aboard RXTE, simultaneously covering TeV and X-ray energies. Supporting observations at optical and radio…

天体物理学 · 物理学 2019-08-14 Wei Cui

On the TeV gamma-ray and X-ray correlations exhibited in high-energy peaked BL Lacs: Mrk 501 and 1ES 1959+650

The spectral energy distribution (SED) of blazars is generally understood through the standard one-zone synchrotron self-Compton (SSC) model, where a strong correlation between X-ray and TeV gamma-ray fluxes is expected. Recently, for Mrk…

高能天体物理现象 · 物理学 2019-09-04 Mabel Osorio , Rodrigo Sacahui , M. Magdalena González , Nissim Fraija , José Andrés García-González

Gamma-Ray Flares from Mrk421 in 2008 observed with the ARGO-YBJ experiment

In 2008, the blazar Mrk421 entered in a very active phase and was one of the brightest sources in the sky at TeV energies, showing strong and frequent flaring. We searched for gamma-ray emission at energies E > 0.8 TeV during the whole 2008…

高能天体物理现象 · 物理学 2009-07-16 G. Di Sciascio

The June 2008 flare of Markarian 421 from optical to TeV energies

We present optical to very-high energy (VHE) gamma-ray observations of Mrk 421 between 2008 May 24 and June 23. A high-energy (HE) gamma-ray signal was detected by AGILE-GRID during June 9-15, brighter than the average flux observed by…

宇宙学与河外天体物理 · 物理学 2019-08-15 R. M. Wagner , I. Donnarumma , J. Grube , M. Villata , C. M. Raiteri , C. -C. Hsu , K. Satalecka , E. Bernardini , P. Majumdar

SST-1M : Commissioning and Preliminary Observation Results

SST-1M is a single-mirror small size Cherenkov telescope prototype developed by a consortium among institutes in Switzerland, Poland, and the Czech Republic. With a 9.42 m$^2$ multi-segment mirror and a 5.6 m focal length, SST-1Ms have a…

天体物理仪器与方法 · 物理学 2024-09-30 Thomas Tavernier , SST-1M Collaboration

Testing the emission models of blazar jets with the MAGIC telescopes

The MAGIC telescopes discovered very high energy (VHE, E>100 GeV) gamma-ray emission coming from the distant Flat Spectrum Radio Quasar (FSRQ) PKS 1222+21 (4C +21.35, z=0.432). It is the second most distant VHE gamma-ray source, with well…

高能天体物理现象 · 物理学 2019-08-13 J. Becerra-González , A. Stamerra , K. Saito , D. Mazin , F. Tavecchio , L. Maraschi , E. Prandini , J. Sitarek , K. Berger

Constraints on Very High Energy gamma-ray emission from Gamma-Ray Bursts

The Milagro gamma-ray observatory employs a water Cherenkov detector to observe extensive air showers produced by high energy particles interacting in the Earth's atmosphere. Milagro has a wide field of view and high duty cycle, monitoring…

天体物理学 · 物理学 2008-11-26 R. Atkins , W. Benbow , D. Berley , E. Blaufuss , D. G. Coyne , T. DeYoung , B. L. Dingus , D. E. Dorfan , R. W. Ellsworth , L. Fleysher , R. Fleysher , M. M. Gonzalez , J. A. Goodman , E. Hays , C. M. Hoffman , L. A. Kelley , C. P. Lansdell , J. T. Linnemann , J. E. McEnery , A. I. Mincer , M. F. Morales , P. Nemethy , D. Noyes , J. M. Ryan , F. W. Samuelson , P. M. Saz Parkinson , A. Shoup , G. Sinnis , A. J. Smith , G. W. Sullivan , D. A. Williams , M. E. Wilson , X. W. Xu , G. B. Yodh

New hard-TeV extreme blazars detected with the MAGIC telescopes

Extreme high-frequency peaked BL Lac objects (EHBLs) are blazars which exhibit extremely energetic synchrotron emission. They also feature non-thermal gamma-ray emission whose peak lies in the very high-energy (VHE, E > 100 GeV) range, and…

高能天体物理现象 · 物理学 2020-08-21 MAGIC Collaboration , V. A. Acciari , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , K. Asano , D. Baack , A. Babić , B. Banerjee , 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 , M. Cerruti , 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 , 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 , 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 , S. Nozaki , S. Paiano , 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 , V. Vagelli , J. van Scherpenberg , G. Vanzo , M. Vazquez Acosta , C. F. Vigorito , V. Vitale , I. Vovk , M. Will , D. Zarić , C. Arcaro , A. Carosi , F. D'Ammando , F. Tombesi , A. Lohfink

Detailed Multifrequency Study of a Rapid VHE Flare of Mrk501 in May 2009

We present observations of the gamma-ray blazar Markarian 501 between April 17 and May 5, 2009, with the Whipple 10-m telescope, VERITAS, the Fermi Large Area Telescope (LAT), Swift and RXTE as part of a 4.5-month multi-wavelength campaign.…

高能天体物理现象 · 物理学 2019-08-15 Ana Pichel , David Paneque

VHE $\gamma$-ray observations of bright BL Lacs with the Large-Sized Telescope prototype (LST-1) of the CTAO

Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based gamma-ray observatory operating in the energy range from 20 GeV up to 300 TeV, with two sites in La Palma (Spain) and Paranal (Chile). It will consist of…

高能天体物理现象 · 物理学 2025-11-18 The CTAO-LST Project , : , K. Abe , S. Abe , A. Abhishek , F. Acero , A. Aguasca-Cabot , I. Agudo , C. Alispach , D. Ambrosino , F. Ambrosino , L. A. Antonelli , C. Aramo , A. Arbet-Engels , C. Arcaro , T. T. H. Arnesen , K. Asano , P. Aubert , A. Baktash , M. Balbo , A. Bamba , A. Baquero Larriva , U. Barres de Almeida , J. A. Barrio , L. Barrios Jiménez , I. Batkovic , J. Baxter , J. Becerra González , E. Bernardini , J. Bernete , A. Berti , I. Bezshyiko , C. Bigongiari , E. Bissaldi , O. Blanch , G. Bonnoli , P. Bordas , G. Borkowski , G. Brunelli , A. Bulgarelli , M. Bunse , I. Burelli , L. Burmistrov , M. Cardillo , S. Caroff , A. Carosi , R. Carraro , M. S. Carrasco , F. Cassol , D. Cerasole , G. Ceribella , A. Cerviño Cortínez , Y. Chai , K. Cheng , A. Chiavassa , M. Chikawa , G. Chon , L. Chytk , G. M. Cicciari , A. Cifuentes , J. L. Contreras , J. Cortina , H. Costantini , M. Dalchenko , P. Da Vela , F. Dazzi , A. De Angelis , M. de Bony de Lavergne , R. Del Burgo , C. Delgado , J. Delgado Mengual , M. Dellaiera , D. della Volpe , B. De Lotto , L. Del Peral , R. de Menezes , G. De Palma , C. Díaz , G. Di Marco , A. Di Piano , F. Di Pierr , R. Di Tria , L. Di Venere , R. M. Dominik , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , L. Eisenberger , D. Elsässer , G. Emery , J. Escudero , V. Fallah Ramazani , F. Ferrarotto , A. Fiasson , L. Foffano , F. Frías García-Lago , S. Fröse , Y. Fukazawa , S. Gallozzi , R. Garcia López , S. Garcia Soto , C. Gasbarra , D. Gasparrini , D. Geyer , J. Giesbrecht Paiva , N. Giglietto , F. Giordano , N. Godinovic , T. Gradetzke , R. Grau , D. Green , J. Green , S. Gunji , P. Günther , J. Hackfeld , D. Hadasch , A. Hahn , M. Hashizume , T. Hassan , K. Hayashi , L. Heckmann , M. Heller , J. Herrera Llorente , K. Hirotani , D. Hoffmann , D. Horns , J. Houles , M. Hrabovsky , D. Hrupec , D. Hui , M. Iarlori , R. Imazawa , T. Inada , Y. Inome , S. Inoue , K. Ioka , M. Iori , T. Itokawa , A. Iuliano , J. Jahanvi , I. Jimenez Martinez , J. Jimenez Quiles , I. Jorge Rodrigo , J. Jurysek , M. Kagaya , O. Kalashev , V. Karas , H. Katagiri , D. Kerszberg , T. Kiyomoto , Y. Kobayashi , K. Kohri , A. Kong , P. Kornecki , H. Kubo , J. Kushida , B. Lacave , M. Lainez , G. Lamanna , A. Lamastra , L. Lemoigne , M. Linhoff , S. Lombardi , F. Longo , R. López-Coto , M. López-Moya , A. López-Oramas , S. Loporchio , A. Lorini , J. Lozano Bahilo , F. Lucarelli , H. Luciani , P. L. Luque-Escamilla , P. Majumdar , M. Makariev , M. Mallamaci , D. Mandat , M. Manganaro , D. K. Maniadakis , G. Manicò , K. Mannheim , S. Marchesi , F. Marini , M. Mariotti , P. Marquez , G. Marsella , J. Martí , O. Martinez , G. Martínez , M. Martínez , A. Mas-Aguilar , M. Massa , G. Maurin , D. Mazin , J. Méndez-Gallego , S. Menon , E. Mestre Guillen , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , M. Mizote , T. Mizuno , M. Molero Gonzalez , E. Molina , T. Montaruli , A. Moralejo , D. Morcuende , A. Moreno Ramos , A. Morselli , V. Moya , H. Muraishi , S. Nagataki , T. Nakamori , A. Neronov , D. Nieto Castaño , M. Nievas Rosillo , L. Nikolic , K. Nishijima , K. Noda , D. Nosek , V. Novotny , S. Nozaki , M. Ohishi , Y. Ohtani , T. Oka , A. Okumura , R. Orito , L. Orsini , J. Otero-Santos , P. Ottanelli , M. Palatiello , G. Panebianco , D. Paneque , F. R. Pantaleo , R. Paoletti , J. M. Paredes , M. Pech , M. Pecimotika , M. Peresano , F. Pfeifle , E. Pietropaolo , M. Pihet , G. Pirola , C. Plard , F. Podobnik , M. Polo , E. Prandini , C. Priyadarshi , M. Prouza , S. Rainò , R. Rando , W. Rhode , M. Ribó , V. Rizi , G. Rodriguez Fernandez , M. D. Rodríguez Frías , P. Romano , A. Roy , A. Ruina , E. Ruiz-Velasco , T. Saito , S. Sakurai , D. A. Sanchez , H. Sano , T. Šarić , Y. Sato , F. G. Saturni , V. Savchenko , F. Schiavone , B. Schleicher , F. Schmuckermaier , J. L. Schubert , F. Schussler , T. Schweizer , M. Seglar Arroyo , T. Siegert , G. Silvestri , A. Simongini , J. Sitarek , V. Sliusar , A. Stamerra , J. Strišković , M. Strzys , Y. Suda , A. Sunny , H. Tajima , M. Takahashi , J. Takata , R. Takeishi , P. H. T. Tam , S. J. Tanaka , D. Tateishi , T. Tavernier , P. Temnikov , Y. Terada , K. Terauchi , T. Terzic , M. Teshima , M. Tluczykont , F. Tokanai , T. Tomura , D. F. Torres , F. Tramonti , P. Travnicek , G. Tripodo , A. Tutone , M. Vacula , J. van Scherpenberg , M. Vázquez Acosta , S. Ventura , S. Vercellone , G. Verna , I. Viale , A. Vigliano , C. F. Vigorito , E. Visentin , V. Vitale , V. Voitsekhovskyi , G. Voutsinas , I. Vovk , T. Vuillaume , R. Walter , L. Wan , M. Will , J. Wójtowicz , T. Yamamoto , R. Yamazaki , Y. Yao , P. K. H. Yeung , T. Yoshida , T. Yoshikoshi , W. Zhang

Optically thick, nonlocal, inhomogeneous, stationary jet model for high-energy radiation from blazars: Application to Mrk 421

There is an increasing number of observational evidence that very high energy gamma-rays in radio-loud active galactic nuclei are produced in the direct vicinity of a supermassive black hole (SMBH), close to the base of a relativistic jet.…

高能天体物理现象 · 物理学 2022-11-30 Piotr Banasinski , Wlodek Bednarek

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…

天体物理学 · 物理学 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

Multiwavelength Observations of Markarian 421 in March 2001: an Unprecedented View on the X-ray/TeV Correlated Variability

(Abridged) We present a detailed analysis of week-long simultaneous observations of the blazar Mrk421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. The unprecedented quality of this dataset enables us to…

天体物理学 · 物理学 2008-06-16 G. Fossati , J. H. Buckley , I. H. Bond , S. M. Bradbury , D. A. Carter-Lewis , Y. C. K. Chow , W. Cui , A. D. Falcone , J. P. Finley , J. A. Gaidos , J. Grube , J. Holder , D. Horan , D. Horns , M. M. Jordan , D. B. Kieda , J. Kildea , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , K. Lee , P. Moriarty , R. A. Ong , D. Petry , J. Quinn , G. H. Sembroski , S. P. Wakely , T. C. Weekes

Detection of VHE Gamma-rays from Mkn 421 with the HEGRA Cherenkov Telescopes

A detection of Gamma-rays from Mkn 421 at energies above 1 TeV is reported, based on observations made in December 1994 - May 1995 with the first two HEGRA Cherenkov telescopes. >From the image analysis, 111 excess gamma candidates are…

天体物理学 · 物理学 2019-08-18 D. Petry , S. M. Bradbury , A. Konopelko , J. Fernandez

Search for high-energy neutrino emission from Mrk 421 and Mrk 501 with the ANTARES neutrino telescope

ANTARES is the largest high-energy neutrino telescope in the Northern Hemisphere. This contribution presents the results of a search, based on the ANTARES data collected over 17 months between November 2014 and April 2016, for high energy…

高能天体物理现象 · 物理学 2019-05-01 Mukharbek Organokov , Thierry Pradier

The MHz-peaked radio spectrum of the unusual gamma-ray source PMN J1603-4904

Context. The majority of bright extragalactic gamma-ray sources are blazars. Only a few radio galaxies have been detected by Fermi/LAT. Recently, the GHz-peaked spectrum source PKS 1718-649 was confirmed to be gamma-ray bright, providing…

高能天体物理现象 · 物理学 2016-09-28 C. Müller , P. R. Burd , R. Schulz , R. Coppejans , H. Falcke , H. Intema , M. Kadler , F. Krauß , R. Ojha

Systematic search for VHE gamma-ray emission from X-ray bright high-frequency BL Lac objects

All but three (M87, BL Lac and 3C 279) extragalactic sources detected so far at very high energy (VHE) gamma-rays belong to the class of high-frequency peaked BL Lac (HBL) objects. This suggested to us a systematic scan of candidate sources…

天体物理学 · 物理学 2019-08-12 M. Meyer

Discovery of very high energy gamma-ray emission from the blazar 1ES 0033+595 by the MAGIC telescopes

The number of known very high energy (VHE) blazars is $\sim\,50$, which is very small in comparison to the number of blazars detected in other frequencies. This situation is a handicap for population studies of blazars, which emit about…

高能天体物理现象 · 物理学 2015-06-23 J. Aleksić , S. Ansoldi , L. A. Antonelli , P. Antoranz , A. Babic , P. Bangale , U. Barres de Almeida , J. A. Barrio , J. Becerra González , W. Bednarek , K. Berger , E. Bernardini , A. Biland , O. Blanch , S. Bonnefoy , G. Bonnoli , F. Borracci , T. Bretz , E. Carmona , A. Carosi , D. Carreto Fidalgo , P. Colin , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , P. Da Vela , F. Dazzi , A. De Angelis , G. De Caneva , B. De Lotto , C. Delgado Mendez , M. Doert , A. Domínguez , D. Dominis Prester , D. Dorner , M. Doro , S. Einecke , D. Eisenacher , D. Elsaesser , E. Farina , D. Ferenc , M. V. Fonseca , L. Font , K. Frantzen , C. Fruck , R. J. García López , M. Garczarczyk , D. Garrido Terrats , M. Gaug , N. Godinović , A. González Muñoz , S. R. Gozzini , D. Hadasch , M. Hayashida , J. Herrera , A. Herrero , D. Hildebrand , J. Hose , D. Hrupec , W. Idec , V. Kadenius , H. Kellermann , K. Kodani , Y. Konno , J. Krause , H. Kubo , J. Kushida , A. La Barbera , D. Lelas , N. Lewandowska , E. Lindfors , S. Lombardi , M. López , R. López-Coto , A. López-Oramas , E. Lorenz , I. Lozano , M. Makariev , K. Mallot , G. Maneva , N. Mankuzhiyil , K. Mannheim , L. Maraschi , B. Marcote , M. Mariotti , M. Martínez , D. Mazin , U. Menzel , M. Meucci , J. M. Miranda , R. Mirzoyan , A. Moralejo , P. Munar-Adrover , D. Nakajima , A. Niedzwiecki , K. Nilsson , K. Nishijima , K. Noda , N. Nowak , R. Orito , A. Overkemping , S. Paiano , M. Palatiello , D. Paneque , R. Paoletti , J. M. Paredes , X. Paredes-Fortuny , S. Partini , M. Persic , F. Prada , P. G. Prada Moroni , E. Prandini , S. Preziuso , I. Puljak , R. Reinthal , W. Rhode , M. Ribó , J. Rico , J. Rodriguez Garcia , S. Rügamer , A. Saggion , T. Saito , K. Saito , K. Satalecka , V. Scalzotto , V. Scapin , C. Schultz , T. Schweizer , S. N. Shore , A. Sillanpää , J. Sitarek , I. Snidaric , D. Sobczynska , F. Spanier , V. Stamatescu , A. Stamerra , T. Steinbring , J. Storz , S. Sun , T. Surić , L. Takalo , H. Takami , F. Tavecchio , P. Temnikov , T. Terzić , D. Tescaro , M. Teshima , J. Thaele , O. Tibolla , D. F. Torres , T. Toyama , A. Treves , M. Uellenbeck , P. Vogler , R. M. Wagner , F. Zandanel , R. Zanin , V. Tronconi , S. Buson