相关论文: Detection of Small Flares from the Crab Nebula wit…

A systematic study of $\gamma$-ray flares from the Crab Nebula with Fermi-LAT: I. flare detection

Significant flares of GeV $\gamma$-ray emission from the Crab Nebula have been found by AGILE and Fermi-LAT years ago, indicating that extreme particle acceleration and radiation occurs in young pulsar wind nebulae. To enlarge the flare…

高能天体物理现象 · 物理学 2021-02-24 Xiaoyuan Huang , Qiang Yuan , Yi-Zhong Fan

Variable gamma-ray emission from the Crab Nebula: short flares and long "waves"

Gamma-ray emission from the Crab Nebula has been recently shown to be unsteady. In this paper, we study the flux and spectral variability of the Crab above 100 MeV on different timescales ranging from days to weeks. In addition to the four…

高能天体物理现象 · 物理学 2013-02-19 E. Striani , M. Tavani , V. Vittorini , I. Donnarumma , A. Giuliani , G. Pucella , A. Argan , A. Bulgarelli , S. Colafrancesco , M. Cardillo , E. Costa , E. Del Monte , A. Ferrari , S. Mereghetti , L. Pacciani , A. Pellizzoni , G. Piano , C. Pittori , M. Rapisarda , S. Sabatini , P. Soffitta , M. Trifoglio , A. Trois , S. Vercellone , F. Verrecchia

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…

高能天体物理现象 · 物理学 2011-01-11 LAT Collaboration

Gamma-ray flux depressions of the Crab nebula in the high-energy range

The giant gamma-ray flares of the Crab nebula discovered by AGILE and Fermi observatories came as a surprise and have challenged the existing models of pulsar wind nebulae. We have carried out an analysis of 10.5 years of Fermi-LAT…

高能天体物理现象 · 物理学 2020-11-23 M. S. Pshirkov , B. A. Nizamov , A. M. Bykov , Yu. A. Uvarov

Gamma-ray flares from pulsar wind nebulae in the Large Magellanic Cloud

High-energy radiation of young pulsar wind nebulae (PWNe) is known to be variable. This is most prominently exemplified by the Crab nebula which can undergo both rapid brightenings and dimmings. Two pulsars in the Large Magellanic Cloud,…

高能天体物理现象 · 物理学 2023-02-27 B. A. Nizamov , M. S. Pshirkov

Discovery of Powerful Gamma-Ray Flares from the Crab Nebula

The well known Crab Nebula is at the center of the SN1054 supernova remnant. It consists of a rotationally-powered pulsar interacting with a surrounding nebula through a relativistic particle wind. The emissions originating from the pulsar…

高能天体物理现象 · 物理学 2011-01-13 M. Tavani , A. Bulgarelli , V. Vittorini , A. Pellizzoni , E. Striani , P. Caraveo , M. C. Weisskopf , A. Tennant , G. Pucella , A. Trois , E. Costa , Y. Evangelista , C. Pittori , F. Verrecchia , E. Del Monte , R. Campana , M. Pilia , A. De Luca , I. Donnarumma , D. Horns , C. Ferrigno , C. O. Heinke , M. Trifoglio , F. Gianotti , S. Vercellone , A. Argan , G. Barbiellini , P. W. Cattaneo , A. W. Chen , T. Contessi , F. D'Ammando , G. DeParis , G. Di Cocco , G. Di Persio , M. Feroci , A. Ferrari , M. Galli , A. Giuliani , M. Giusti , C. Labanti , I. Lapshov , F. Lazzarotto , P. Lipari , F. Longo , F. Fuschino , M. Marisaldi , S. Mereghetti , E. Morelli , E. Moretti , A. Morselli , L. Pacciani , F. Perotti , G. Piano , P. Picozza , M. Prest , M. Rapisarda , A. Rappoldi , A. Rubini , S. Sabatini , P. Soffitta , E. Vallazza , A. Zambra , D. Zanello , F. Lucarelli , P. Santolamazza , P. Giommi , L. Salotti , G. F. Bignami

The Surprising Crab Nebula

We will present our study of the flux and spectral variability of the Crab above 100 MeV on different timescales ranging from days to weeks. In addition to the four main intense and day-long flares detected by AGILE and Fermi-LAT between…

高能天体物理现象 · 物理学 2013-03-12 E. Striani , M. Tavani , V. Vittorini

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…

高能天体物理现象 · 物理学 2011-06-07 Marco Tavani

A statistical model to explain the gamma-ray variability and flares of the Crab nebula

Recently the AGILE and Fermi/LAT detectors uncovered giant $\gamma$-ray flares from the Crab nebula. The duration of these flares is a few days. The Fermi/LAT data with monthly time binning further showed significant variability of the…

高能天体物理现象 · 物理学 2015-05-30 Qiang Yuan , Peng-Fei Yin , Xue-Feng Wu , Xiao-Jun Bi , Siming Liu , Bing Zhang

Rapid Gamma-ray flux variability during the 2013 March Crab Nebula flare

We report on a bright flare in the Crab Nebula detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. The period of significantly increased luminosity occurred in 2013 March and lasted for approximately 2…

高能天体物理现象 · 物理学 2013-09-13 M. Mayer , R. Buehler , E. Hays , M. Dutka , C. C. Cheung , M. S. Dutka , J. E. Grove , M. Kerr , R. Ojha

Inductive spikes in the Crab Nebula - a theory of gamma-ray flares

We show that the mysterious, rapidly variable emission at ~400 MeV observed from the Crab Nebula by the AGILE and Fermi experiments could be the result of a sudden drop in the mass-loading of the pulsar wind. The current required to…

高能天体物理现象 · 物理学 2017-11-29 John G. Kirk , Gwenael Giacinti

The surprising Crab pulsar and its nebula: A review

The Crab nebula and its pulsar (referred to together as "Crab") have historically played a central role in astrophysics. True to their legacy, several unique discoveries have been made recently. The Crab was found to emit gamma-ray…

高能天体物理现象 · 物理学 2014-06-16 Rolf Buehler , Roger Blandford

Resolving the Crab pulsar wind nebula at teraelectronvolt energies

The Crab nebula is one of the most studied cosmic particle accelerators, shining brightly across the entire electromagnetic spectrum up to very high-energy gamma rays. It is known from radio to gamma-ray observations that the nebula is…

高能天体物理现象 · 物理学 2019-09-24 H. E. S. S. Collaboration , H. Abdalla , F. Aharonian , F. Ait Benkhali , E. O. Angüner , M. Arakawa , C. Arcaro , C. Arm , M. Backes , M. Barnard , Y. Becherini , J. Becker Tjus , D. Berge , K. Bernlöhr , R. Blackwell , M. Böttcher , C. Boisson , J. Bolmont , S. Bonnefoy , P. Bordas , J. Bregeon , F. Brun , P. Brun , M. Bryan , M. Büchele , T. Bulik , T. Bylund , M. Capasso , S. Caroff , A. Carosi , S. Casanova , M. Cerruti , N. Chakraborty , T. Ch , S. Ch , R. C. G. Chaves , A. Chen , S. Colafrancesco , B. Condon , I. D. Davids , C. Deil , J. Devin , P. deWilt , L. Dirson , A. Djannati-Ataï , A. Dmytriiev , A. Donath , V. Doroshenko , L. O'C. Drury , J. Dyks , K. Egberts , G. Emery , J. -P. Ernenwein , S. Eschbach , S. Fegan , A. Fiasson , G. Fontaine , S. Funk , M. Füßling , S. Gabici , Y. A. Gallant , F. Gaté , G. Giavitto , D. Glawion , J. F. Glicenstein , D. Gottschall , M. -H. Grondin , J. Hahn , M. Haupt , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , W. Hofmann , C. Hoischen , T. L. Holch , M. Holler , D. Horns , D. Huber , H. Iwasaki , A. Jacholkowska , M. Jamrozy , D. Jankowsky , F. Jankowsky , L. Jouvin , I. Jung-Richardt , M. A. Kastendieck , K. Katarzyński , M. Katsuragawa , U. Katz , D. Khangulyan , B. Khélifi , J. King , S. Klepser , W. Kluźniak , Nu. Komin , K. Kosack , M. Kraus , G. Lamanna , J. Lau , J. Lefaucheur , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , E. Leser , T. Lohse , R. López-Coto , I. Lypova , D. Malyshev , V. Mar , A. Marcowith , C. Mariaud , G. Martí-Devesa , R. Marx , G. Maurin , P. J. Meintjes , A. M. W. Mitchell , R. Moderski , M. Mohamed , L. Mohrmann , C. Moore , E. Moulin , T. Murach , S. Nakashima , M. de Naurois , H. Ndiyavala , F. Niederwanger , J. Niemiec , L. Oakes , P. O'Brien , H. Odaka , S. Ohm , M. Ostrowski , I. Oya , M. Panter , R. D. Parsons , C. Perennes , P. -O. Petrucci , B. Peyaud , Q. Piel , S. Pita , V. Poireau , A. Priyana Noel , D. A. Prokhorov , H. Prokoph , G. Pühlhofer , M. Punch , A. Quirrenbach , S. Raab , R. Rauth , A. Reimer , O. Reimer , M. Renaud , F. Rieger , L. Rinchiuso , C. Romoli , G. Rowell , B. Rudak , E. Ruiz-Velasco , V. Sahakian , S. Saito , D. A. Sanchez , A. Santangelo , M. Sasaki , R. Schlickeiser , F. Schüssler , A. Schulz , H. Schutte , U. Schwanke , S. Schwemmer , M. Seglar-Arroyo , M. Senniappan , A. S. Seyffert , N. Shafi , I. Shilon , K. Shiningayamwe , R. Simoni , A. Sinha , H. Sol , A. Specovius , M. Spir-Jacob , Ł. Stawarz , R. Steenkamp , C. Stegmann , C. Steppa , T. Takahashi , J. -P. Tavernet , T. Tavernier , A. M. Taylor , R. Terrier , D. Tiziani , M. Tluczykont , C. Trichard , M. Tsirou , N. Tsuji , R. Tuffs , Y. Uchiyama , D. J. van der Walt , C. van Eldik , C. van Rensburg , B. van Soelen , G. Vasileiadis , J. Veh , C. Venter , P. Vincent , J. Vink , F. Voisin , H. J. Völk , T. Vuillaume , Z. Wadiasingh , S. J. Wagner , R. M. Wagner , R. White , A. Wierzcholska , R. Yang , H. Yoneda , D. Zaborov , M. Zacharias , R. Zanin , A. A. Zdziarski , A. Zech , A. Ziegler , J. Zorn , N. Żywucka

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…

天体物理学 · 物理学 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

Peta-electron volt gamma-ray emission from the Crab Nebula

The Crab pulsar and the surrounding nebula powered by the pulsar's rotational energy through the formation and termination of a relativistic electron-positron wind is a bright source of gamma-rays carrying crucial information about this…

高能天体物理现象 · 物理学 2021-11-15 The LHAASO Collaboration , Zhen Cao , F. Aharonian , Q. An , Axikegu , L. X. Bai , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , H. Cai , J. T. Cai , Zhe Cao , J. Chang , J. F. Chang , B. M. Chen , E. S. Chen , J. Chen , Liang Chen , Liang Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , X. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , S. W. Cui , X. H. Cui , Y. D. Cui , B. D'Ettorre Piazzoli , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , D. della Volpe , X. J. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , Z. X. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , Y. L. Feng , B. Gao , C. D. Gao , L. Q. Gao , Q. Gao , W. Gao , M. M. Ge , L. S. Geng , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , J. G. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. C. He , S. L. He , X. B. He , Y. He , M. Heller , Y. K. Hor , C. Hou , X. Hou , H. B. Hu , S. Hu , S. C. Hu , X. J. Hu , D. H. Huang , Q. L. Huang , W. H. Huang , X. T. Huang , X. Y. Huang , Z. C. Huang , F. Ji , X. L. Ji , H. Y. Jia , K. Jiang , Z. J. Jiang , C. Jin , T. Ke , D. Kuleshov , K. Levochkin , B. B. Li , Cheng Li , Cong Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , Jie Li , Jian Li , K. Li , W. L. Li , X. R. Li , Xin Li , Xin Li , Y. Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. S. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , Z. X. Liu , W. J. Long , R. Lu , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , A. Masood , Z. Min , W. Mitthumsiri , T. Montaruli , Y. C. Nan , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , Y. Q. Qi , B. Q. Qiao , J. J. Qin , D. Ruffolo , V. Rulev , A. Sáiz , L. Shao , O. Shchegolev , X. D. Sheng , J. Y. Shi , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Z. B. Tang , W. W. Tian , B. D. Wang , C. Wang , H. Wang , H. G. Wang , J. C. Wang , J. S. Wang , L. P. Wang , L. Y. Wang , R. N. Wang , Wei Wang , Wei Wang , X. G. Wang , X. J. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Y. J. Wang , Y. P. 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 , S. Wu , W. X. Wu , X. F. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , H. B. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , D. L. Xu , R. X. Xu , L. Xue , D. H. Yan , J. Z. Yan , C. W. Yang , F. F. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. D. Zeng , T. X. Zeng , W. Zeng , Z. K. Zeng , M. Zha , X. X. Zhai , B. B. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , J. W. Zhang , L. X. Zhang , Li Zhang , Lu Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. F. Zhang , Y. L. Zhang , Yi Zhang , Yong Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , Y. Zheng , B. Zhou , H. Zhou , J. N. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo

Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars

The high sensitivity of the Fermi-LAT (Large Area Telescope) offers the first opportunity to study faint and extended GeV sources such as pulsar wind nebulae (PWNe). After one year of observation the LAT detected and identified three pulsar…

高能天体物理现象 · 物理学 2011-01-28 The Fermi LAT Collaboration , Pulsar Timing Consortium

Gamma-ray Activity in the Crab Nebula: The Exceptional Flare of April 2011

The Large Area Telescope on board the Fermi satellite observed a gamma-ray flare in the Crab nebula lasting for approximately nine days in April of 2011. The source, which at optical wavelengths has a size of ~11 ly across, doubled its…

高能天体物理现象 · 物理学 2015-06-03 R. Buehler , J. D. Scargle , R. D. Blandford , L. Baldini , M. G. Baring , A. Belfiore , E. Charles , J. Chiang , F. D'Ammando , C. D. Dermer , S. Funk , J. E. Grove , A. K. Harding , E. Hays , M. Kerr , F. Massaro , M. N. Mazziotta , R. W. Romani , P. M. Saz Parkinson , A. F. Tennant , M. C. Weisskopf

Fermi Large Area Telescope Observations of the Crab Pulsar and Nebula

We report on gamma-ray observations of the Crab Pulsar and Nebula using 8 months of survey data with the Fermi Large Area Telescope (LAT). The high quality light curve obtained using the ephemeris provided by the Nancay and Jodrell Bank…

高能天体物理现象 · 物理学 2012-08-27 The Fermi LAT collaboration , the Fermi Pulsar Timing Consortium , : , A. A. Abdo

Observations of the Crab Pulsar with VERITAS

The Fermi space telescope has detected over 100 pulsars. These discoveries have ushered in a new era of pulsar astrophysics at gamma-ray energies. Gamma-ray pulsars, regardless of whether they are young, old, radio-quiet etc, all exhibit a…

高能天体物理现象 · 物理学 2019-08-13 A. McCann

Twelve-hour spikes from the Crab Pevatron

Aims. The Crab nebula displayed a large gamma-ray flare on September 18, 2010. To more closely understand the origin of this phenomenon, we analyze the INTEGRAL (20-500 keV) and FERMI (0.1-300 GeV) data collected almost simultaneously…

高能天体物理现象 · 物理学 2015-05-20 M. Balbo , R. Walter , C. Ferrigno , P. Bordas