English
Related papers

Related papers: Fermi-LAT data reprocessed with updated calibratio…

200 papers

We report on observations of TeV-selected AGN made during the first 5.5 months of observations with the Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope (Fermi). In total, 28 TeV AGN were selected for study. The Fermi…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 S. J. Fegan , D. Sanchez

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…

High Energy Astrophysical Phenomena · Physics 2016-08-03 C. C. Cheung , P. Jean , S. N. Shore , L. Stawarz , R. H. D. Corbet , J. Knodlseder , S. Starrfield , D. L. Wood , R. Desiante , F. Longo , G. Pivato , K. S. Wood

Over the past 16 years, the Fermi Large Area Telescope (LAT) has significantly advanced our view of the GeV gamma-ray sky, yet several key questions remain - such as the composition of the isotropic gamma-ray background, the origin of the…

High Energy Astrophysical Phenomena · Physics 2025-05-07 Christopher Eckner , Noemi Anau Montel , Florian List , Francesca Calore , Christoph Weniger

The Large Area Telescope (LAT) on board Fermi has detected high-energy gamma rays from the quiet Sun produced by interactions of cosmic-ray nucleons with the solar surface and cosmic-ray electrons with solar photons in the heliosphere. Such…

Solar and Stellar Astrophysics · Physics 2019-08-13 Elena Orlando , Nicola Giglietto

The first Gamma-Ray Burst (GRB) catalog presented by the Fermi-Large Area Telescope (LAT) collaboration includes 28 GRBs, detected above 100 MeV over the first three years since the launch of the Fermi mission. However, more than 100 GRBs…

High Energy Astrophysical Phenomena · Physics 2015-09-07 Elisabetta Bissaldi , Tristano Di Girolamo , Francesco Longo , Piero Vallania , Carlo Vigorito

The Gamma-ray Large Area Space Telescope (GLAST) is a next generation high energy gamma-ray observatory due for launch in Fall 2007. The primary instrument is the Large Area Telescope (LAT), which will measure gamma-ray flux and spectra…

Astrophysics · Physics 2009-09-29 R. Dubois

The Fermi Gamma-ray Space Telescope with its main instrument on-board, the Large Area Telescope (LAT), opened a new era in the study of high-energy emission from Active Galactic Nuclei (AGN). When combined with contemporaneous ground- and…

High Energy Astrophysical Phenomena · Physics 2017-12-01 Filippo D'Ammando

We report our analysis of the data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope (Fermi) for the SS 433/W50 region. The total data length is ten years. Different from the previous results reported…

High Energy Astrophysical Phenomena · Physics 2021-06-03 Yi Xing , Zhongxiang Wang , Xiao Zhang , Yang Chen , V. Jithesh

We describe the development of the model for interstellar gamma-ray emission that is the standard adopted by the LAT team and is publicly available. The model is based on a linear combination of templates for interstellar gas column density…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Jean-Marc Casandjian

A year after \emph{Fermi} was launched, the number of known gamma-ray pulsars has increased dramatically. For the first time, a sizable population of pulsars has been discovered in gamma-ray data alone. For the first time, millisecond…

High Energy Astrophysical Phenomena · Physics 2009-12-21 L. Guillemot , Fermi LAT Collaboration

A 2.1-year periodic oscillation of the gamma-ray flux from the blazar PG 1553+113 has previously been tentatively identified in almost 7 year of data from the Fermi Large Area Telescope. After 15 years of Fermi sky-survey observations,…

The Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope detected a gamma-ray source that is spatially consistent with the location of Eta Carinae. This source has been persistently bright since the beginning of the LAT…

High Energy Astrophysical Phenomena · Physics 2012-08-27 The Fermi LAT collaboration

Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy cosmic rays, which…

High Energy Astrophysical Phenomena · Physics 2016-08-17 Cesar Rojas-Bravo , Miguel Araya

One of the main results of the Fermi Gamma-Ray Space Telescope is the discovery of {\gamma}-ray selected pulsars. The high magnetic field pulsar, PSR J0007+7303 in CTA1, was the first ever to be discovered through its {\gamma}-ray…

High Energy Astrophysical Phenomena · Physics 2015-05-28 A. A. Abdo , K. S. Wood , M. E. DeCesar , F. Gargano , F. Giordano , P. S. Ray , D. Parent , A. K. Harding , M. Coleman Miller , D. L. Wood , M. T. Wolff

Careful preservation of experimental data, simulations, analysis products, and theoretical work maximizes their long-term scientific return on investment by enabling new analyses and reinterpretation of the results in the future. Key…

Computational Physics · Physics 2022-09-20 Stephen Bailey , K. S. Cranmer , Matthew Feickert , Rob Fine , Sabine Kraml , Clemens Lange

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…

High Energy Astrophysical Phenomena · Physics 2025-03-05 B. Kapanadze , A. Gurchumelia , M. Aller

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…

High Energy Astrophysical Phenomena · Physics 2009-12-22 G. A. Caliandro , E. C. Ferrara , D. Parent , R. W. Romani

The binary system eta Carinae has completed its first 5.54y orbit since the beginning of science operation of the Fermi Large Area Telescope (LAT). We are now able to investigate the high-energy gamma-ray source at the position of eta…

High Energy Astrophysical Phenomena · Physics 2015-05-13 K. Reitberger , A. Reimer , O. Reimer , H. Takahashi

We describe a long-term Swift monitoring program of Fermi gamma-ray sources, particularly the 23 gamma-ray "sources of interest." We present a systematic analysis of the Swift X-ray Telescope light curves and hardness ratios of these…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Michael C. Stroh , Abe D. Falcone

The recent launch of Fermi / GLAST - coinciding with the MAXI workshop - opens a new era for studies of jet-dominated active galaxies, known as blazars. While the emission processes operating in various spectral bands in blazars are…

Astrophysics · Physics 2008-10-13 Greg Madejski , Jun Kataoka , Marek Sikora