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The Fermi Large Area Telescope (LAT) observed two bright X-class solar flares on 2012 March 7, and detected gamma-rays up to 4 GeV. We detected gamma-rays both during the impulsive and temporally-extended emission phases, with emission…

高能天体物理现象 · 物理学 2017-02-22 LAT collaboration

We present the detections of 19 solar flares detected in high-energy gamma rays (above 100 MeV) with the Fermi Large Area Telescope (LAT) during its first four years of operation. Interestingly, all flares are associated with fairly fast…

高能天体物理现象 · 物理学 2017-02-22 LAT collaboration

Intense solar flares originated in sun spots produce high energy particles (protons, $\alpha$) well observable by satellites and ground-based detectors. The flare onset produces signals in different energy bands (radio, X, gamma and…

高能物理 - 唯象学 · 物理学 2009-11-10 D. Fargion

The solar neutron detector SEDA-FIB onboard the International Space Station (ISS) has detected several events from the solar direction associated with three large solar flares observed on March 5th (X1.1), 7th (X5.4), and 9th (M6.3) of…

太阳与恒星天体物理 · 物理学 2018-06-19 K. Koga , H. Matsumoto , O. Okudaira , T. Goka , T. Obara , S. Masuda , Y. Muraki , S. Shibata , T. Yamamoto

[Abridged]We present analysis of a pair of unusually energetic coronal hard X-ray (HXR) sources detected by RHESSI during the impulsive phase of an X3.9 class solar flare on 2003 November 3, which simultaneously shows two intense footpoint…

太阳与恒星天体物理 · 物理学 2015-06-03 Qingrong Chen , Vahe Petrosian

The SEDA-FIB is a detector designed to measure solar neutrons. This solar neutron detector was operated onboard the ISS on July 16, 2009 and March 31, 2018. Eighteen large solar flares were later observed by the GOES satellite in solar…

太阳与恒星天体物理 · 物理学 2019-07-23 K. Kamiya , K. Koga , H. Matsumoto , S. Masuda , Y. Muraki , H. Tajima , S. Shibata

High-energy solar flares have shown to have at least two distinct phases: prompt-impulsive and delayed-gradual. Identifying the mechanism responsible for accelerating the electrons and ions and the site at which it occurs during these two…

太阳与恒星天体物理 · 物理学 2021-09-29 Melissa Pesce-Rollins , Nicola Omodei , Vahe' Petrosian , Francesco Longo

The origin of relativistic solar protons during large flare/CME events has not been uniquely identified so far.We perform a detailed comparative analysis of the time profiles of relativistic protons detected by the worldwide network of…

太阳与恒星天体物理 · 物理学 2015-05-13 S. Masson , K. -L. Klein , R. Buetikofer , E. Flueckiger , V. Kurt , B. Yushkov , S. Krucker

We considered 18 solar flares observed between June 2010 and July 2012, in which high energy >100 MeV {\gamma}-emission was registered by the Large Area Telescope (LAT) aboard FermiGRO. We examined for these {\gamma}-events soft X-ray…

高能天体物理现象 · 物理学 2015-09-02 Alexei Struminsky , Weiqun Gan

Solar flares are one of the main forces behind space weather events. However the mechanism that drives such energetic phenomena is not fully understood. The standard eruptive flare model predicts that magnetic reconnection occurs high in…

太阳与恒星天体物理 · 物理学 2015-06-17 S. Imada , K. Aoki , H. Hara , T. Watanabe , L. K. Harra , T. Shimizu

An M6.5-class flare was observed at N12E56 of the solar surface at 16:06 UT on July 8, 2014. In association with this flare, solar neutron detectors located on two high mountains, Mt. Sierra Negra and Chacaltaya and at the space station…

Fermi-LAT >30 MeV observations have increased the number of detected solar flares by almost a factor of 10 with respect to previous space observations. These sample both the impulsive and long duration phases of GOES M and X class flares.…

太阳与恒星天体物理 · 物理学 2019-08-14 Melissa Pesce-Rollins , Nicola Omodei , Vahe' Petrosian , Wei Liu , Fatima Rubio da Costa , Alice Allafort

High-energy particles were recorded by near-Earth spacecraft and ground-based neutron monitors (NMs) on 2012 May 17. This event was the first ground level enhancement (GLE) of solar cycle 24. In this study, we try to identify the…

太阳与恒星天体物理 · 物理学 2013-05-27 C. Li , Kazi A. Firoz , L. P. Sun , L. I. Miroshnichenko

An X3.4 solar flare and a fast halo coronal mass ejection (CME) occurred on 2006 December 13, accompanied by a high flux of energetic particles recorded both in near-Earth space and at ground level. Our purpose is to provide evidence of…

太阳与恒星天体物理 · 物理学 2013-05-27 C. Li , Y. Dai , J. -C. Vial , C. J. Owen , S. A. Matthews , Y. H. Tang , C. Fang , A. N. Fazakerley

The Fermi Lab Liquid ARgon experiment, FLARE, a huge neutrino argon-liquid project detector of 50 kt mass, might in a near future enlarge the neutrino telescope accuracy revealing in detail solar, supernova, atmospheric as well as largest…

天体物理学 · 物理学 2007-05-23 D. Fargion

Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of solar flares. We searched using the Super-Kamiokande detector for neutrinos from solar…

太阳与恒星天体物理 · 物理学 2022-10-27 K. Okamoto , K. Abe , Y. Hayato , K. Hiraide , K. Hosokawa , K. Ieki , M. Ikeda , J. Kameda , Y. Kanemura , Y. Kaneshima , Y. Kataoka , Y. Kashiwagi , S. Miki , S. Mine , M. Miura , S. Moriyama , Y. Nagao , M. Nakahata , Y. Nakano , S. Nakayama , Y. Noguchi , K. Sato , H. Sekiya , K. Shimizu , M. Shiozawa , H. Shiba , Y. Sonoda , Y. Suzuki , A. Takeda , Y. Takemoto , A. Takenaka , H. Tanaka , S. Watanabe , T. Yano , S. Han , T. Kajita , K. Okumura , T. Tashiro , T. Tomiya , X. Wang , J. Xia , S. Yoshida , G. D. Megias , P. Fernandez , L. Labarga , N. Ospina , B. Zaldivar , B. W. Pointon , E. Kearns , J. L. Raaf , L. Wan , T. Wester , J. Bian , N. J. Griskevich , W. R. Kropp , S. Locke , M. B. Smy , H. W. Sobel , V. Takhistov , A. Yankelevich , J. Hill , J. Y. Kim , S. H. Lee , I. T. Lim , D. H. Moon , R. G. Park , B. Bodur , K. Scholberg , C. W. Walter , A. Beauchene , L. Bernard , A. Coffani , O. Drapier , S. El Hedri , A. Giampaolo , Th. A. Mueller , A. D. Santos , P. Paganini , B. Quilain , T. Ishizuka , T. Nakamura , J. S. Jang , J. G. Learned , K. Choi , S. Cao , L. H. V. Anthony , D. Martin , M. Scott , A. A. Sztuc , Y. Uchida , V. Berardi , M. G. Catanesi , E. Radicioni , N. F. Calabria , L. N. Machado , G. De Rosa , G. Collazuol , F. Iacob , M. Lamoureux , M. Mattiazzi , L. Ludovici , M. Gonin , G. Pronost , C. Fujisawa , Y. Maekawa , Y. Nishimura , M. Friend , T. Hasegawa , T. Ishida , T. Kobayashi , M. Jakkapu , T. Matsubara , T. Nakadaira , K. Nakamura , Y. Oyama , K. Sakashita , T. Sekiguchi , T. Tsukamoto , N. Bhuiyan , T. Boschi , G. T. Burton , F. Di Lodovico , J. Gao , A. Goldsack , T. Katori , J. Migenda , M. Taani , Z. Xie , S. Zsoldos , Y. Kotsar , H. Ozaki , A. T. Suzuki , Y. Takeuchi , S. Yamamoto , C. Bronner , J. Feng , T. Kikawa , M. Mori , T. Nakaya , R. A. Wendell , K. Yasutome , S. J. Jenkins , N. McCauley , P. Mehta , A. Tarrant , K. M. Tsui , Y. Fukuda , Y. Itow , H. Menjo , K. Ninomiya , J. Lagoda , S. M. Lakshmi , M. Mandal , P. Mijakowski , Y. S. Prabhu , J. Zalipska , M. Jia , J. Jiang , C. K. Jung , C. Vilela , M. J. Wilking , C. Yanagisawa , M. Harada , H. Ishino , S. Ito , H. Kitagawa , Y. Koshio , W. Ma , F. Nakanishi , N. Piplani , S. Sakai , G. Barr , D. Barrow , L. Cook , S. Samani , D. Wark , A. Holin , F. Nova , J. Y. Yang , J. E. P. Fannon , M. Malek , J. M. McElwee , O. Stone , M. D. Thiesse , L. F. Thompson , H. Okazawa , S. B. Kim , E. Kwon , J. W. Seo , I. Yu , A. K. Ichikawa , K. D. Nakamura , S. Tairafune , K. Nishijima , M. Koshiba , K. Iwamoto , K. Nakagiri , Y. Nakajima , S. Shima , N. Taniuchi , M. Yokoyama , K. Martens , P. de Perio , M. R. Vagins , M. Kuze , S. Izumiyama , M. Inomoto , M. Ishitsuka , H. Ito , T. Kinoshita , R. Matsumoto , Y. Ommura , N. Shigeta , M. Shinoki , T. Suganuma , K. Yamauchi , J. F. Martin , H. A. Tanaka , T. Towstego , R. Akutsu , R. Gaur , V. Gousy-Leblanc , M. Hartz , A. Konaka , X. Li , N. W. Prouse , S. Chen , B. D. Xu , B. Zhang , M. Posiadala-Zezula , S. B. Boyd , D. Hadley , M. Nicholson , M. O'Flaherty , B. Richards , A. Ali , B. Jamieson , J. Walker , Ll. Marti , A. Minamino , G. Pintaudi , S. Sano , R. Sasaki , S. Suzuki , K. Wada

The Fermi Large Area Telescope (LAT) is the most sensitive instrument ever deployed in space for observing gamma-ray emission >100 MeV. This sensitivity has enabled the LAT to detect gamma-ray emission from the Sun during quiescent periods…

高能天体物理现象 · 物理学 2013-04-04 N. Omodei , V. Petrosian , M. Pesce-Rollins , the Fermi-LAT Collaboration

The Fermi-Large Area Telescope (LAT) detection of the X8.2 GOES class solar flare of 2017 September 10 provides for the first time observations of a long duration high-energy gamma-ray flare associated with a Ground Level Enhancement (GLE).…

高能天体物理现象 · 物理学 2018-09-26 Nicola Omodei , Melissa Pesce-Rollins , Francesco Longo , Alice Allafort , Säm Krucker

Neutrinos generated during solar flares remain elusive. However, after $50$ years of discussion and search, the potential knowledge unleashed by their discovery keeps the search crucial. Neutrinos associated with solar flares provide…

太阳与恒星天体物理 · 物理学 2020-10-12 K. Okamoto , Y. Nakano , S. Masuda , Y. Itow , M. Miyake , T. Terasawa , S. Ito , M. Nakahata

We report on the Fermi-LAT detection of high-energy emission from the behind-the-limb (BTL) solar flares that occurred on 2013 October 11, and 2014 January 6 and September 1. The Fermi-LAT observations are associated with flares from active…

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