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A new $\gamma$-ray source with a significance level of approximately 5$\sigma$ was reported in the region of SNR G272.2-3.2, analysing the approximately 12.4 years of observation data from the Fermi Large Area Telescope (Fermi-LAT). Its…

高能天体物理现象 · 物理学 2021-09-08 Yun-Chuan Xiang , Ze-Jun Jiang

The isotropic diffuse $\gamma$-ray background (IGRB) has been detected by various experiments and recently the Fermi-LAT Collaboration has precisely measured its spectrum in a wide energy range. The origin of the IGRB is still unclear and…

高能天体物理现象 · 物理学 2016-06-22 Mattia Di Mauro

The study of Galactic Cosmic-ray electrons (CREs) saw important developments in recent years, with the assumption of positron production only in interaction of hadronic Cosmic-rays with interstellar matter challenged by new measurements of…

高能天体物理现象 · 物理学 2016-10-17 Marco Tinivella

We have investigated a number of factors that can have significant impacts on the classification performance of $\gamma$-ray sources detected by Fermi Large Area Telescope (LAT) with machine learning techniques. We show that a framework of…

天体物理仪器与方法 · 物理学 2020-01-29 Shengda Luo , Alex P. Leung , C. Y. Hui , K. L. Li

The advent of new all-sky radio surveys such as the VLA Sky Survey (VLASS) and the Rapid ASKAP Continuum Survey (RACS), performed with the latest generation radio telescopes, is opening new possibilities on the classification and study of…

A list of 205 gamma-ray strong objects was reported recently as a result of a 3-month integration with the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope. We attempted identification of these objects, cross-correlating…

宇宙学与河外天体物理 · 物理学 2014-11-20 Y. Y. Kovalev

We report on a search for steep spectrum radio sources within the 95% confidence error ellipses of the Fermi unassociated sources from the Large Array Telescope (LAT). Using existing catalogs and the newly released GMRT all-sky survey at…

高能天体物理现象 · 物理学 2016-07-27 D. A. Frail , K. P. Mooley , P. Jagannathan , H. T. Intema

The radio, optical, and $\gamma$-ray light curves of the blazar S5 1803+784, from the beginning of the {\it Fermi} Large Area Telescope (LAT) mission in August 2008 until December 2018, are presented. The aim of this work is to look for…

(Abridged) The Large Area Telescope (Fermi/LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy gamma-ray telescope, covering the energy range…

天体物理仪器与方法 · 物理学 2012-08-27 LAT Collaboration , W. B. Atwood

The Fermi LAT has detected numerous transient gamma-ray sources near the Galactic plane, several of which have been shown to be located within our Galaxy. We present an analysis of LAT Pass 8 data of seven previously reported, but still…

高能天体物理现象 · 物理学 2018-01-18 Dirk Pandel

Launched on June 11, 2008, the LAT instrument onboard the $Fermi$ Gamma-ray Space Telescope has provided a rare opportunity to study high energy photon emission from gamma-ray bursts. Although the majority of such events (27) have been iden…

高能天体物理现象 · 物理学 2015-06-04 Weikang Zheng , Carl W. Akerlof , Shashi B. Pandey , Timothy A. McKay , Binbin Zhang , Bing Zhang , Takanori Sakamoto

The Large Area Telescope (LAT) aboard the $Fermi$ spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 years of operations, from 2008…

高能天体物理现象 · 物理学 2019-06-28 M. Axelsson , E. Bissaldi , N. Omodei , G. Vianello

The contribution of unresolved sources to the diffuse gamma-ray background could induce anisotropies in this emission on small angular scales. We analyze the angular power spectrum of the diffuse emission measured by the Fermi LAT at…

高能天体物理现象 · 物理学 2019-08-15 M. Ackermann , M. Ajello , A. Albert , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , E. D. Bloom , E. Bonamente , A. W. Borgland , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , C. Cecchi , E. Charles , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , A. Cuoco , S. Cutini , F. D'Ammando , F. de Palma , C. D. Dermer , S. W. Digel , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , R. Dubois , C. Favuzzi , S. J. Fegan , E. C. Ferrara , P. Fortin , Y. Fukazawa , P. Fusco , F. Gargano , D. Gasparrini , S. Germani , N. Giglietto , M. Giroletti , T. Glanzman , G. Godfrey , G. A. Gomez-Vargas , T. Grégoire , I. A. Grenier , J. E. Grove , S. Guiriec , M. Gustafsson , D. Hadasch , M. Hayashida , K. Hayashi , X. Hou , R. E. Hughes , G. Jóhannesson , A. S. Johnson , T. Kamae , J. Knödlseder , M. Kuss , J. Lande , L. Latronico , M. Lemoine-Goumard , T. Linden , A. M. Lionetto , M. Llena Garde , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , M. N. Mazziotta , J. E. McEnery , W. Mitthumsiri , T. Mizuno , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , M. Naumann-Godo , J. P. Norris , E. Nuss , T. Ohsugi , A. Okumura , M. Orienti , E. Orlando , J. F. Ormes , D. Paneque , J. H. Panetta , D. Parent , V. Pavlidou , M. Pesce-Rollins , M. Pierbattista , F. Piron , G. Pivato , S. Rainò , R. Rando , A. Reimer , O. Reimer , M. Roth , C. Sbarra , J. Schmitt , C. Sgrò , J. Siegal-Gaskins , E. J. Siskind , G. Spandre , P. Spinelli , A. W. Strong , D. J. Suson , H. Takahashi , T. Tanaka , J. B. Thayer , L. Tibaldo , M. Tinivella , D. F. Torres , G. Tosti , E. Troja , T. L. Usher , J. Vandenbroucke , V. Vasileiou , G. Vianello , V. Vitale , A. P. Waite , B. L. Winer , K. S. Wood , M. Wood , Z. Yang , S. Zimmer , E. Komatsu

We present broadband (radio, optical, and X-ray) light curves and spectra of the afterglows of four long-duration gamma-ray bursts (GRBs 090323, 090328, 090902B, and 090926A) detected by the Gamma-Ray Burst Monitor (GBM) and Large Area…

Launched on the 11th of June 2008, the Fermi Large Area Telescope (LAT) has made several outstanding scientific contributions to the high energy astrophysics community. One of these contributions was the high statistics measurement of the…

高能天体物理现象 · 物理学 2019-08-14 Melissa Pesce-Rollins

The Large Area Telescope (LAT) on board the \emph{Fermi} Gamma-ray Space Telescope has been continuously providing good quality survey data of the entire sky in the high energy range from 30 MeV to 500 GeV and above since August 2008. A…

高能天体物理现象 · 物理学 2025-10-13 A. Pathania , K. K. Singh , S. K. Singh , A. Tolamatti , B. B. Singh , K. K. Yadav

An incremental version (4LAC-DR2) of the fourth catalog of active galactic nuclei (AGNs) detected by the Fermi-LAT is presented. This version is associated with the second release of the 4FGL general catalog (based on 10 years of data),…

高能天体物理现象 · 物理学 2020-10-19 B. Lott , D. Gasparrini , S. Ciprini

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 report on the first Fermi Large Area Telescope (LAT) measurements of the so-called "extra-galactic" diffuse gamma-ray emission (EGB). This component of the diffuse gamma-ray emission is generally considered to have an isotropic or nearly…

高能天体物理现象 · 物理学 2010-04-06 LAT collaboration

The Large Area Telescope (LAT), Fermi's main instrument, is providing a new view of the local energetic pulsar population. In addition to identifying a pulsar origin of a large fraction of the bright unidentified Galactic EGRET sources, the…

高能天体物理现象 · 物理学 2009-12-22 G. A. Caliandro , E. C. Ferrara , D. Parent , R. W. Romani