相关论文: Simultaneous Multiwavelength Observations of Marka…

Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003

We report on a multiwavelength campaign on the TeV gamma-ray blazar Markarian (Mrk) 421 performed during December 2002 and January 2003. These target of opportunity observations were initiated by the detection of X-ray and TeV gamma-ray…

天体物理学 · 物理学 2019-08-15 P. Rebillot , M. Aller , H. Aller , P. Boltwood , I. Jung , D. Kranich , A. Sillanpaa , A. Sadun

Multiwavelength Observations of Markarian 421 in 2005 - 2006

Since September 2005, the Whipple 10m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five Northern Hemisphere blazars that have already been detected at the Whipple Observatory, Markarian 421, H1426+428, Markarian…

高能天体物理现象 · 物理学 2011-02-11 D. Horan , V. A. Acciari , S. M. Bradbury , J. H. Buckley , V. Bugaev , K. L. Byrum , A. Cannon , O. Celik , A. Cesarini , Y. C. K. Chow , L. Ciupik , P. Cogan , A. D. Falcone , S. J. Fegan , J. P. Finley , P. Fortin , L. F. Fortson , D. Gall , G. H. Gillanders , J. Grube , G. Gyuk , D. Hanna , E. Hays , M. Kertzman , J. Kildea , A. Konopelko , H. Krawczynski , F. , M. J. Lang , K. Lee , P. Moriarty , T. Nagai , J. Niemiec , R. A. Ong , J. S. Perkins , M. Pohl , J. Quinn , P. T. Reynolds , H. J. Rose , G. H. Sembroski , A. W. Smith , D. Steele , S. P. Swordy , J. A. Toner , V. V. Vassiliev , S. P. Wakely , T. C. Weekes , R. J. White , D. A. Williams , M. D. Wood , B. Zitzer , H. D. Aller , M. F. Aller , M. Baker , D. Barnaby , M. T. Carini , P. Charlot , J. P. Dumm , N. E. Fields , T. Hovatta , B. Jordan , Y. A. Kovalev , Y. Y. Kovalev , H. A. Krimm , O. M. Kurtanidze , A. Lahteenmaki , J. F. Le Campion , J. Maune , T. Montaruli , A. C. Sadun , S. Smith , M. Tornikoski , M. Turunen , R. Walters

Multi-wavelength Observations of Markarian 501

The very high energy (VHE; E > 100 GeV) gamma-ray blazar Markarian 501 has a history of extreme spectral variability and is an excellent laboratory for studying the physical processes within the jets of active galactic nuclei. A short term…

高能天体物理现象 · 物理学 2019-08-13 Daniel Gall

INTEGRAL observations of the blazar Mrk 421 in outburst (Results of a multi-wavelength campaign)

We report the results of a multi-wavelength campaign on the blazar Mrk 421 during outburst. We observed four strong flares at X-ray energies that were not seen at other wavelengths (partially because of missing data). From the fastest rise…

天体物理学 · 物理学 2009-11-13 G. G. Lichti , E. Bottacini , M. Ajello , P. Charlot , W. Collmar , A. Falcone , D. Horan , S. Huber , A. von Kienlin , A. Lähteenmäki , E. Lindfors , D. Morris , K. Nilsson , D. Petry , M. Rüger , A. Sillanpää , F. Spanier , M. Tornikoski

VERITAS observation of Markarian 421 flaring activity

Markarian 421 is one of the brightest BL-Lac objects in gamma-rays in the northern hemisphere. Because of its brightness, the source has been the focus of several coordinated multi-wavelength (MWL) campaigns designed to study the physical…

高能天体物理现象 · 物理学 2019-08-13 Nicola Galante

Multifrequency variability of the blazar AO 0235+164. The WEBT campaign in 2004-2005 and long-term SED analysis

A huge multiwavelength campaign targeting the blazar AO 0235+164 was organized by the Whole Earth Blazar Telescope (WEBT) in 2003-2005 to study the variability properties of the source. Monitoring observations were carried out at cm and mm…

天体物理学 · 物理学 2009-11-11 C. M. Raiteri , M. Villata , M. Kadler , M. A. Ibrahimov , O. M. Kurtanidze , V. M. Larionov

Multi-wavelength study of Mrk 421 during a TeV flare

The blazar Mrk 421 shows frequent, short flares in the TeV energy regime. Due to the fast nature of such episodes, we often fail to obtain sufficient simultaneous information about flux variations in several energy bands. To overcome this…

高能天体物理现象 · 物理学 2021-08-05 A. Gokus , A. Kreikenbohm , K. Leiter , T. Bretz , T. Dauser , D. Dorner , D. Elsaesser , F. Eppel , J. Hessdoerfer , M. Kadler , A. Kraus , M. Kreter , I. Kreykenbohm , M. Langejahn , K. Mannheim , P. Thalhammer , J. Wilms , A. Arbet-Engels , D. Baack , M. Balbo , A. Biland , J. Buss , L. Eisenberger , D. Hildebrand , R. Iotov , A. Kalenski , A. Mitchell , D. Neise , M. Noethe , A. Paravac , W. Rhode , B. Schleicher , V. Sliusar , R. Walter

MAGIC TeV Gamma-Ray Observations of Markarian 421 during Multiwavelength Campaigns in 2006

The Major Atmospheric Gamma Imaging Cerenkov (MAGIC) telescope participated in three multiwavelength (MWL) campaigns, observing the blazar Markarian (Mkn) 421 during the nights of 2006 April 28, 29, and 2006 June 14. We analyzed the…

宇宙学与河外天体物理 · 物理学 2014-11-20 MAGIC Collaboration , J. Aleksić , L. A. Antonelli , P. Antoranz , M. Backes , C. Baixeras , S. Balestra , J. A. Barrio , D. Bastieri , J. Becerra González , W. Bednarek , A. Berdyugin , K. Berger , E. Bernardini , A. Biland , R. K. Bock , G. Bonnoli , P. Bordas , D. Borla Tridon , V. Bosch-Ramon , D. Bose , I. Braun , T. Bretz , D. Britzger , M. Camara , E. Carmona , A. Carosi , P. Colin , S. Commichau , J. L. Contreras , J. Cortina , M. T. Costado , S. Covino , F. Dazzi , A. De Angelis , E. De Cea del Pozo , C. Delgado Mendez , R. De los Reyes , B. De Lotto , M. De Maria , F. De Sabata , M. Doert , A. Domínguez , D. Dominis Prester , D. Dorner , M. Doro , D. Elsaesser , M. Errando , D. Ferenc , M. V. Fonseca , L. Font , R. J. García López , M. Garczarczyk , M. Gaug , N. Godinovic , D. Hadasch , A. Herrero , D. Hildebrand , D. Höhne-Mönch , J. Hose , D. Hrupec , C. C. Hsu , T. Jogler , S. Klepser , T. Krähenbühl , D. Kranich , A. La Barbera , A. Laille , E. Leonardo , E. Lindfors , S. Lombardi , F. Longo , M. López , E. Lorenz , P. Majumdar , G. Maneva , N. Mankuzhiyil , K. Mannheim , L. Maraschi , M. Mariotti , M. Martínez , D. Mazin , M. Meucci , J. M. Miranda , R. Mirzoyan , H. Miyamoto , J. Moldón , M. Moles , A. Moralejo , D. Nieto , K. Nilsson , J. Ninkovic , R. Orito , I. Oya , S. Paiano , R. Paoletti , J. M. Paredes , S. Partini , M. Pasanen , D. Pascoli , F. Pauss , R. G. Pegna , M. A. Perez-Torres , M. Persic , L. Peruzzo , F. Prada , E. Prandini , N. Puchades , I. Puljak , I. Reichardt , W. Rhode , M. Ribó , J. Rico , M. Rissi , S. Rügamer , A. Saggion , T. Y. Saito , M. Salvati , M. Sánchez-Conde , K. Satalecka , V. Scalzotto , V. Scapin , C. Schultz , T. Schweizer , M. Shayduk , S. N. Shore , A. Sierpowska-Bartosik , A. Sillanpää , J. Sitarek , D. Sobczynska , F. Spanier , S. Spiro , A. Stamerra , B. Steinke , J. C. Struebig , T. Suric , L. Takalo , F. Tavecchio , P. Temnikov , T. Terzic , D. Tescaro , M. Teshima , D. F. Torres , H. Vankov , R. M. Wagner , V. Zabalza , F. Zandanel , R. Zanin

Hour-Scale Multiwavelength Variability in Markarian 421

Markarian 421 was observed for about four days with BeppoSAX and the Whipple Observatory gamma-ray telescope in April 1998. A pronounced, well-defined, flare with hour-scale variability was observed simultaneously in X-rays and very high…

天体物理学 · 物理学 2007-05-23 M. Catanese , I. H. Bond , S. M. Bradbury , A. C. Breslin , J. H. Buckley , A. M. Burdett , D. A. Carter-Lewis , M. F. Cawley , S. Dunlea , M. D'Vali , D. J. Fegan , S. J. Fegan , J. P. Finley , J. A. Gaidos , T. A. Hall , A. M. Hillas , D. Horan , J. Knapp , F. Krennrich , S. Le Bohec , R. W. Lessard , C. Masterson , P. Moriarty , J. Quinn , H. J. Rose , F. W. Samuelson , G. H. Sembroski , V. V. Vassiliev , T. C. Weekes , L. Maraschi , G. Fossati , F. Tavecchio , L. Chiappetti , A. Celotti , G. Ghisellini , P. Grandi , E. Pian , G. Tagliaferri , A. Treves

Observation of Strong Variability in the X-Ray Emission from Markarian 421 Correlated with the May 1996 TeV Flare

We observed the BL Lac object Markarian 421 with the X-ray satellite RXTE and the Whipple Air Cerenkov Telescope during a two week correlated X-ray/gamma-ray campaign in May 1996. Two dramatic outbursts with extremely rapid and strong flux…

天体物理学 · 物理学 2009-10-30 Michael Schubnell

Violent Hard X-ray Variability of Mrk 421 Observed by NuSTAR in 2013 April

The well studied blazar Markarian 421 (Mrk 421, $z$=0.031) was the subject of an intensive multi-wavelength campaign when it flared in 2013 April. The recorded X-ray and very high energy (VHE, E$>$100 GeV) $\gamma$-ray fluxes are the…

高能天体物理现象 · 物理学 2015-10-07 Vaidehi S. Paliya , Markus Bottcher , Chris Diltz , C. S. Stalin , S. Sahayanathan , C. D. Ravikumar

The Great Markarian 421 Flare of February 2010: Multiwavelength variability and correlation studies

We report on variability and correlation studies using multiwavelength observations of the blazar Mrk 421 during the month of February, 2010 when an extraordinary flare reaching a level of $\sim$27~Crab Units above 1~TeV was measured in…

高能天体物理现象 · 物理学 2020-04-06 A. U. Abeysekara , W. Benbow , R. Bird , A. Brill , R. Brose , M. Buchovecky , J. H. Buckley , J. L. Christiansen , A. J. Chromey , M. K. Daniel , J. Dumm , A. Falcone , Q. Feng , J. P. Finley , L. Fortson , A. Furniss , N. Galante , A. Gent , G. H. Gillanders , C. Giuri , O. Gueta , T. Hassan , O. Hervet , J. Holder , G. Hughes , T. B. Humensky , C. A. Johnson , P. Kaaret , P. Kar , N. Kelley-Hoskins , M. Kertzman , D. Kieda , M. Krause , F. Krennrich , S. Kumar , M. J. Lang , P. Moriarty , R. Mukherjee , T. Nelson , D. Nieto , M. Nievas-Rosillo , S. O'Brien , R. A. Ong , A. N. Otte , N. Park , A. Petrashyk , A. Pichel , M. Pohl , R. R. Prado , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , G. T. Richards , E. Roache , A. C. Rovero , C. Rulten , I. Sadeh , M. Santander , G. H. Sembroski , K. Shahinyan , B. Stevenson , I. Sushch , J. Tyler , V. V. Vassiliev , S. P. Wakely , A. Weinstein , R. M. Wells , P. Wilcox , A. Wilhelm , D. A. Williams , B. Zitzer , V. A. Acciari , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , 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 , G. Busetto , R. Carosi , G. Ceribella , Y. Chai , 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 , F. Di Pierro , E. Do Souto Espiñera , D. Dominis Prester , D. Dorner , M. Doro , S. Einecke , D. Elsaesser , V. Fallah Ramazani , A. Fattorini , A. Fernández-Barral , G. Ferrara , D. Fidalgo , L. Foffano , M. V. Fonseca , L. Font , C. Fruck , D. Galindo , S. Gallozzi , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , N. Godinović , D. Green , D. Guberman , D. Hadasch , A. Hahn , J. Herrera , J. Hoang , D. Hrupec , S. Inoue , K. Ishio , Y. Iwamura , H. Kubo , J. Kushida , A. Lamastra , D. Lelas , F. Leone , E. Lindfors , S. Lombardi , F. Longo , M. López , R. López-Coto , A. López-Oramas , 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 , D. Miceli , M. Minev , J. M. Miranda , R. Mirzoyan , E. Molina , A. Moralejo , D. Morcuende , V. Moreno , E. Moretti , P. Munar-Adrover , V. Neustroev , A. Niedzwiecki , M. Nievas Rosillo , C. Nigro , K. Nilsson , D. Ninci , K. Nishijima , K. Noda , L. Nogués , M. Nöthe , 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 , K. Satalecka , T. Schweizer , J. Sitarek , I. Šnidarić , D. Sobczynska , A. Somero , A. Stamerra , D. Strom , M. Strzys , S. Sun , T. Surić , F. Tavecchio , P. Temnikov , T. Terzić , M. Teshima , N. Torres-Albà , S. Tsujimoto , J. van Scherpenberg , G. Vanzo , M. Vazquez Acosta , I. Vovk , M. Will , D. Zarić , H. D. Aller , M. F. Aller , M. T. Carini , D. Horan , B. Jordan , Svetlana G. Jorstad , O. M. Kurtanidze , S. O. Kurtanidze , A. Lähteenmäki , V. M. Larionov , E. G. Larionova , G. Madejski , Alan P. Marscher , W. Max-Moerbeck , J. Ward Moody , D. A. Morozova , M. G. Nikolashvili , C. M. Raiteri , A. C. S. Readhead , J. L. Richards , Alberto C. Sadun , T. Sakamoto , L. A. Sigua , P. S. Smith , H. Talvikki , J. Tammi , M. Tornikoski , I. S. Troitsky , M. Villata

Results from the Blazar Monitoring Campaign at the Whipple 10m Gamma-ray Telescope

In September 2005, the observing program of the Whipple 10 m gamma-ray telescope was redefined to be dedicated almost exclusively to AGN monitoring. Since then the five Northern Hemisphere blazars that had already been detected at Whipple…

天体物理学 · 物理学 2019-08-15 David Steele , M. T. Carini , P. Charlot , O. Kurtanidze , A. Lahteenmaki , T. Montaruli , A. C. Sadun , M. Villata

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

Intensive TeV Gamma-Ray and X-Ray Observations of the Blazar Mrk 421 in December 2002 and January 2003

We report on observations of Markarian 421 made with the Whipple 10m Cerenkov telescope and the RXTE satellite during a multi-wavelength campaign in December 2002 and January 2003, initiated by a Whipple target of opportunity. The…

天体物理学 · 物理学 2007-05-23 P. Rebillot

TeV Gamma Ray Blazar Monitoring Campaign

It is notoriously difficult to organize simultaneous observations from space and from the ground. This is particularly so at GeV-TeV energies where the space observations from all sky telescopes and the ground-based observations (mostly…

高能天体物理现象 · 物理学 2019-08-13 E. Collins-Hughes

Observations of Mkn 421 with the MAGIC Telescope

The MAGIC telescope took data of very high energy gamma-ray emission from the blazar Markarian 421 (Mkn 421) between November 2004 and April 2005. We present a combined analysis of data samples recorded under different observational…

天体物理学 · 物理学 2008-11-26 J. Albert et al.

Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations

Mrk 421 was in its most active state around early 2010, which led to the highest TeV gamma-ray flux ever recorded from any active galactic nuclei. We aim to characterize the multiwavelength behavior during this exceptional year for Mrk 421,…

高能天体物理现象 · 物理学 2025-01-08 K. Abe , S. Abe , J. Abhir , A. Abhishek , V. A. Acciari , A. Aguasca-Cabot , I. Agudo , T. Aniello , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , C. Arcaro , K. Asano , D. Baack , A. Babić , U. Barres de Almeida , J. A. Barrio , I. Batković , A. Bautista , J. Baxter , J. Becerra González , W. Bednarek , E. Bernardini , J. Bernete , A. Berti , J. Besenrieder , C. Bigongiari , A. Biland , O. Blanch , G. Bonnoli , Ž. Bošnjak , E. Bronzini , I. Burelli , A. Campoy-Ordaz , R. Carosi , M. Carretero-Castrillo , A. J. Castro-Tirado , D. Cerasole , G. Ceribella , Y. Chai , A. Cifuentes , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , G. D'Amico , F. D'Ammando , V. D'Elia , P. Da Vela , F. Dazzi , A. De Angelis , B. De Lotto , R. de Menezes , M. Delfino , J. Delgado , C. Delgado Mendez , F. Di Pierro , R. Di Tria , L. Di Venere , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , L. Eisenberger , D. Elsaesser , J. Escudero , L. Fariña , A. Fattorini , L. Foffano , L. Font , S. Fröse , S. Fukami , Y. Fukazawa , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , J. G. Giesbrecht Paiva , N. Giglietto , F. Giordano , P. Gliwny , N. Godinović , T. Gradetzke , R. Grau , D. Green , J. G. Green , P. Günther , D. Hadasch , A. Hahn , T. Hassan , L. Heckmann , J. Herrera Llorente , D. Hrupec , R. Imazawa , K. Ishio , I. Jiménez Martínez , J. Jormanainen , S. Kankkunen , T. Kayanoki , D. Kerszberg , G. W. Kluge , P. M. Kouch , H. Kubo , J. Kushida , M. Láinez , A. Lamastra , F. Leone , E. Lindfors , S. Lombardi , F. Longo , R. López-Coto , M. López-Moya , A. López-Oramas , S. Loporchio , A. Lorini , P. Majumdar , M. Makariev , G. Maneva , M. Manganaro , S. Mangano , K. Mannheim , M. Mariotti , M. Martínez , M. Martínez-Chicharro , A. Mas-Aguilar , D. Mazin , S. Menchiari , S. Mender , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , M. Molero González , E. Molina , H. A. Mondal , A. Moralejo , D. Morcuende , T. Nakamori , C. Nanci , V. Neustroev , L. Nickel , C. Nigro , L. Nikolić , K. Nilsson , K. Nishijima , T. Njoh Ekoume , K. Noda , S. Nozaki , A. Okumura , J. Otero-Santos , S. Paiano , D. Paneque , R. Paoletti , J. M. Paredes , M. Peresano , M. Persic , M. Pihet , G. Pirola , F. Podobnik , P. G. Prada Moroni , E. Prandini , G. Principe , W. Rhode , M. Ribó , J. Rico , C. Righi , N. Sahakyan , T. Saito , F. G. Saturni , K. Schmidt , F. Schmuckermaier , J. L. Schubert , T. Schweizer , A. Sciaccaluga , G. Silvestri , J. Sitarek , D. Sobczynska , A. Stamerra , J. Strišković , D. Strom , Y. Suda , H. Tajima , M. Takahashi , R. Takeishi , F. Tavecchio , P. Temnikov , K. Terauchi , T. Terzić , M. Teshima , S. Truzzi , A. Tutone , S. Ubach , J. van Scherpenberg , S. Ventura , G. Verna , I. Viale , C. F. Vigorito , V. Vitale , I. Vovk , R. Walter , F. Wersig , M. Will , T. Yamamoto , S. G. Jorstad , A. P. Marscher , M. Perri , C. Leto , F. Verrecchia , M. Aller , W. Max-Moerbeck , A. C. S. Readhead , A. Lähteenmäki , M. Tornikoski , M. A. Gurwell , A. E. Wehrle

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

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

We present optical, X-ray, high energy ($\lessapprox 30$ GeV) and very high energy ($\gtrapprox 100$ GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between 2008 May 24 and June 23. A high energy $\gamma$-ray signal…

天体物理学 · 物理学 2012-08-27 The Agile Collaboration , Webt Collaboration , Magic Collaboration , Veritas Collaboration , I. Donnarumma