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The Fermi Gamma-ray Space Telescope (Fermi) was launched on June 11, 2008 and began its first year sky survey on August 11, 2008. The Large Area Telescope (LAT), a wide field-of-view pair-conversion telescope covering the energy range from…

High Energy Astrophysical Phenomena · Physics 2010-11-30 Peter F. Michelson , William B. Atwood , Steven Ritz

The diffuse Galactic gamma-ray data from the region of the Galactic Center has been collected by the LAT instrument on the Fermi Gamma-Ray Space Telescope. In this paper we argue that it may be able to provide an unambiguous evidence of…

High Energy Astrophysical Phenomena · Physics 2009-09-09 Leszek Roszkowski , Yue-Lin Sming Tsai

The diffuse gamma-ray emission between 10 and 1000 TeV from the Galactic plane was recently measured by the Large High Altitude Air Shower Observatory (LHAASO). These observations will help tremendously in constraining the propagation and…

High Energy Astrophysical Phenomena · Physics 2023-11-06 Rui Zhang , Xiaoyuan Huang , Zhi-Hui Xu , Shiping Zhao , Qiang Yuan

We present a new method to interpret the $\gamma$-ray data of our inner Galaxy as measured by the Fermi Large Area Telescope (Fermi LAT). We train and test convolutional neural networks with simulated Fermi-LAT images based on models tuned…

High Energy Astrophysical Phenomena · Physics 2018-05-29 Sascha Caron , Germán A. Gómez-Vargas , Luc Hendriks , Roberto Ruiz de Austri

The Large Area Telescope (LAT) on Fermi, launched on 2008 June 11, is a space telescope to explore the high energy gamma-ray universe. The instrument covers the energy range from 20 MeV to 300 GeV with greatly improved sensitivity and…

High Energy Astrophysical Phenomena · Physics 2010-06-18 Damien Parent

We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal,…

High Energy Astrophysical Phenomena · Physics 2013-04-10 G. Zaharijas , J. Conrad , A. Cuoco , Z. Yang

The Fermi Gamma-ray Space Telescope (formerly known as Gamma-ray Large Area Space Telescope, GLAST) was successfully launched on June 11 2008. Its main instrument is the Large Area Telescope (LAT), which detects gamma rays from 20 MeV to…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Philippe Bruel

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…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Sylvain Chaty

The Fermi Large Area Telescope (LAT) has provided the most detailed view to date of the emission towards the Galactic centre (GC) in high-energy gamma-rays. This paper describes the analysis of data taken during the first 62 months of the…

High Energy Astrophysical Phenomena · Physics 2017-02-22 LAT Collaboration

The Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope is a pair-conversion telescope designed to survey the gamma-ray sky from 20 MeV to several hundreds of GeV. In this energy band there are no astronomical sources…

Instrumentation and Methods for Astrophysics · Physics 2015-05-30 The Fermi LAT Collaboration

The enigma of cosmic ray origin and propagation stands as a key question in particle astrophysics. The precise spatial and spectral measurements of diffuse Galactic gamma-ray emission provide new avenues for unraveling this mystery. Based…

High Energy Astrophysical Phenomena · Physics 2025-10-01 Qi-Ling Chen , Qiang Yuan , Yi-Qing Guo , Ming-Ming Kang , Chao-Wen Yang

The Large Area Telescope (LAT), the primary instrument for the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy gamma-ray telescope, covering the energy range from 30 MeV to more than 300 GeV.…

Instrumentation and Methods for Astrophysics · Physics 2021-09-07 The Fermi LAT Collaboration , M. Ajello , W. B. Atwood , M. Axelsson , R. Bagagli , M. Bagni , L. Baldini , D. Bastieri , F. Bellardi , R. Bellazzini , E. Bissaldi , E. D. Bloom , R. Bonino , J. Bregeon , A. Brez , P. Bruel , R. Buehler , S. Buson , R. A. Cameron , P. A. Caraveo , E. Cavazzuti , M. Ceccanti , S. Chen , C. C. Cheung , S. Ciprini , I. Cognard , J. Cohen-Tanugi , S. Cutini , F. D'Ammando , P. de la Torre Luque , F. de Palma , S. W. Digel , F. Dirirsa , N. Di Lalla , L. Di Venere , A. Domínguez , D. Fabiani , E. C. Ferrara , A. Fiori , G. Foglia , Y. Fukazawa , P. Fusco , F. Gargano , D. Gasparrini , M. Giroletti , T. Glanzman , D. Green , S. Griffin , M. -H. Grondin , J. E. Grove , L. Guillemot , S. Guiriec , M. Gustafsson , E. Hays , D. Horan , G. Jóhannesson , T. J. Johnson , T. Kamae , M. Kerr , M. Kuss , S. Larsson , L. Latronico , M. Lemoine-Goumard , J. Li , I. Liodakis , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , S. Maldera , A. Manfreda , G. Martí-Devesa , M. N. Mazziotta , N. Menon , I. Mereu , M. Meyer , P. F. Michelson , M. Minuti , W. Mitthumsiri , T. Mizuno , M. Mongelli , M. E. Monzani , I. V. Moskalenko , M. Negro , E. Nuss , R. Ojha , M. Orienti , E. Orlando , A. Paccagnella , V. S. Paliya , D. Paneque , Z. Pei , J. S. Perkins , M. Pesce-Rollins , M. Pinchera , F. Piron , H. Poon , T. A. Porter , R. Primavera , G. Principe , J. L. Racusin , S. Rainò , R. Rando , B. Rani , E. Rapposelli , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , J. J. Russell , N. Saggini , P. M. Saz Parkinson , N. Scolieri , D. Serini , C. Sgrò , E. J. Siskind , D. A. Smith , G. Spandre , P. Spinelli , D. J. Suson , H. Tajima , J. G. Thayer , D. J. Thompson , L. Tibaldo , D. F. Torres , G. Tosti , J. Valverde , L. Vigiani , G. Zaharijas

The Large Area Telescope (LAT) on the Fermi satellite is the first gamma-ray instrument to discover pulsars directly via their gamma-ray emission. Roughly one third of the 117 gamma-ray pulsars detected by the LAT in its first three years…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Pablo M. Saz Parkinson

Designed to be a successor of the previous flown space based gamma ray detectors, the Fermi Large Area Telescope (LAT) is also an electron detector. Taking advantage of its capability to separate electromagnetic and hadronic signals it is…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Melissa Pesce-Rollins

The Fermi 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 from 20…

Instrumentation and Methods for Astrophysics · Physics 2015-03-20 LAT Collaboration

The Fermi Gamma-Ray Space Telescope, successfully launched on June 11th, 2008, is the next generation satellite experiment for high-energy gamma-ray astronomy. The main instrument, the Fermi Large Area Telescope (LAT), with a wide field of…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Christine Meurer

Pulsars are among the prime targets for the Large Area Telescope (LAT) aboard the recently launched Fermi observatory. The LAT will study the gamma-ray Universe between 20 MeV and 300 GeV with unprecedented detail. Increasing numbers of…

Aims. We use 5 years of Fermi-LAT data towards the Galactic-centre giant molecular cloud complex, Sagittarius B, to test questions of how well-mixed the Galactic component of cosmic rays are and what the level of the cosmic-ray sea in…

High Energy Astrophysical Phenomena · Physics 2015-08-12 Rui-zhi Yang , David I. Jones , Felix Aharonian

With its excellent sensitivity, large field of view, broad energy coverage, and good per-photon angular resolution, the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope satellite provides us with an unprecedented view of the…

High Energy Astrophysical Phenomena · Physics 2022-03-02 Jürgen Knödlseder

We have used measurements by the Fermi Large Area Telescope (LAT) to study the interstellar gamma-ray emission in a region of the second Galactic quadrant, at 100 deg < l < 145 deg and -15 deg < b < 30 deg. This region encompasses the…

High Energy Astrophysical Phenomena · Physics 2019-08-13 L. Tibaldo , I. A. Grenier