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相关论文: The First Fermi-LAT Solar Flare Catalog

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The Large Area Telescope on the Fermi gamma-ray Space Telescope provides unprecedented sensitivity for all-sky monitoring of gamma-ray activity. It has detected a few Galactic sources, including 2 gamma-ray binaries and a microquasar. In…

高能天体物理现象 · 物理学 2016-11-15 Sylvain Chaty

The solar disk is a bright source of multi-GeV gamma rays, due to the interactions of hadronic cosmic rays with the solar atmosphere. However, the underlying production mechanism is not understood, except that its efficiency must be greatly…

高能天体物理现象 · 物理学 2018-10-09 Qing-Wen Tang , Kenny C. Y. Ng , Tim Linden , Bei Zhou , John F. Beacom , Annika H. G. Peter

We report on gamma-ray observations in the off-pulse window of the Vela pulsar PSR B0833-45, using 11 months of survey data from the Fermi Large Area Telescope (LAT). This pulsar is located in the 8 degree diameter Vela supernova remnant,…

高能天体物理现象 · 物理学 2016-09-28 The Fermi LAT Collaboration , Pulsar Timing Consortium

High-$z$ blazars (z $\geq 2.5$) are the most powerful class of persistent $\gamma$-ray sources in the Universe. These objects possess the highest jet powers and luminosities and have black hole masses often in excess of $10^9$ solar masses.…

高能天体物理现象 · 物理学 2020-11-18 M. Kreter , A. Gokus , F. Krauß , M. Kadler , R. Ojha , S. Buson , J. Wilms , M. Böttcher

The Fermi All-sky Variability Analysis (FAVA) provides a photometric alternative for identifying week-long gamma-ray flares across the entire sky while being independent of any diffuse Galactic or isotropic emission model. We reviewed 779…

高能天体物理现象 · 物理学 2024-02-29 Scott D. Joffre , Núria Torres-Albà , Marco Ajello , Daniel Kocevski , Rolf Buehler

We present the first catalog of active galactic nuclei (AGN) detected by the LAT, corresponding to 11 months of data collected in scientific operation mode. The First LAT AGN Catalog (1LAC) includes 671 gamma-ray sources located at high…

高能天体物理现象 · 物理学 2019-08-14 A. A. Abdo

We present a catalog of sources of very high energy (E>100 GeV) gamma-rays detected by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope at Galactic latitudes |b|>=10 degrees. We cross-correlate the directions of…

高能天体物理现象 · 物理学 2015-05-18 A. Neronov , D. V. Semikoz , Ie. Vovk

The Fermi Large Area Telescope (LAT) has made the first definitive GeV detections of the binaries LS I +61^{\circ}303 and LS5039 in the first year after its launch in August 2008. These detections were unambiguous because, apart from a…

高能天体物理现象 · 物理学 2019-08-14 D. Hadasch

We compare the gamma-ray photon flux variability of northern blazars in the Fermi/LAT First Source Catalog with 37 GHz radio flux density curves from the Metsahovi quasar monitoring program. We find that the relationship between…

高能天体物理现象 · 物理学 2011-10-25 J. Leon-Tavares , E. Valtaoja , M. Tornikoski , A. Lahteenmaki , E. Nieppola

We report the Fermi Large Area Telescope (LAT) detections of high-energy (>100 MeV) gamma-ray emission from two recent optically bright classical novae, V1369 Centauri 2013 and V5668 Sagittarii 2015. At early times, Fermi…

We present the light curves and spectral data of two exceptionally luminous gamma-ray outburts observed by the Large Area Telescope (LAT) experiment on board Fermi Gamma-ray Space Telescope from 3C 273 in September 2009. During these…

高能天体物理现象 · 物理学 2015-05-20 A. A. Abdo et al.

BL Lacertae, the prototype of the BL Lacertae (BL Lac) category of blazars, underwent a giant $\gamma-$ray flare in April 2021. The Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope (hereafter Fermi-LAT) observed a peak…

高能天体物理现象 · 物理学 2022-12-21 Ashwani Pandey , C. S. Stalin

We report on the gamma-ray activity of the high-synchrotron-peaked BL Lacertae object Mrk 421 during the first 1.5 years of Fermi operation, from 2008 August 5 to 2010 March 12. We find that the Large Area Telescope (LAT) gamma-ray spectrum…

This paper presents the gamma-ray spectral and timing results from the long-term regular observations of Mrk 421 with the Large Area Telescope (LAT) onboard Fermi during 2008 August - 2023 August. We discerned six periods the relatively…

高能天体物理现象 · 物理学 2025-03-05 B. Kapanadze , A. Gurchumelia , M. Aller

PSR B1259-63 is a $\gamma$-ray emitting high mass X-ray binary system, in which the compact object is a millisecond pulsar. The system has an orbital period of 1236.7 d and shows peculiar $\gamma$-ray flares when the neutron star moves out…

高能天体物理现象 · 物理学 2019-01-16 Zhi Chang , Shu Zhang , Yu-Peng Chen , Long Ji , Ling-Da Kong , Cong-Zhan Liu

The Large Area Telescope (LAT) aboard the Fermi satellite allows us to study the high-energy gamma-ray sky with unprecedented sensitivity. However, the origin of 31% of the detected gamma-ray sources remains unknown. This population of…

高能天体物理现象 · 物理学 2015-05-27 Hannes-S. Zechlin , Dieter Horns

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…

高能天体物理现象 · 物理学 2009-12-04 The Fermi LAT Collaboration , A. A. Abdo , D. E. Harris , F. Massaro , L. Stawarz

The Fermi Gamma-Ray Space Telescope has more than doubled the number of Gamma-Ray Bursts (GRBs) detected above 100 MeV within its first year of operation. Thanks to the very wide energy range covered by Fermi's Gamma-ray Burst Monitor (GBM;…

高能天体物理现象 · 物理学 2019-08-13 Jonathan Granot

The Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope provides an unprecedented opportunity to study gamma-ray blazars. To capitalize on this opportunity, beginning in late 2007, about a year before the start of LAT…

Flares from magnetically active dwarf stars should produce relativistic particles capable of creating gamma-rays. So far, the only isolated main sequence star besides the Sun to have been detected in gamma-rays is TVLM 513-46546. Detecting…

高能天体物理现象 · 物理学 2024-05-27 Yuzhe Song , Timothy A. D. Paglione , Ekaterina Ilin