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Related papers: Gamma-ray pulsars with Fermi

200 papers

Using gamma-ray data from the Fermi Large Area Telescope, various groups have identified a clear excess emission in the Inner Galaxy, at energies around a few GeV. This excess resembles remarkably well a signal from dark-matter…

High Energy Astrophysical Phenomena · Physics 2016-03-10 Richard Bartels , Suraj Krishnamurthy , Christoph Weniger

We present an incremental version (4FGL-DR3, for Data Release 3) of the fourth Fermi-LAT catalog of gamma-ray sources. Based on the first twelve years of science data in the energy range from 50 MeV to 1 TeV, it contains 6658 sources. The…

High Energy Astrophysical Phenomena · Physics 2022-07-05 LAT collaboration , Soheila Abdollahi , Fabio Acero , Luca Baldini , Jean Ballet , Denis Bastieri , Ronaldo Bellazzini , Bijan Berenji , Alessandra Berretta , Elisabetta Bissaldi , Roger D. Blandford , Elliott Bloom , Raffaella Bonino , Ari Brill , Richard J. Britto , Philippe Bruel , Toby H. Burnett , Sara Buson , Rob A. Cameron , Regina Caputo , Patrizia A. Caraveo , Daniel Castro , Sylvain Chaty , Teddy C. Cheung , Graziano Chiaro , Nicolo Cibrario , Stefano Ciprini , Javier Coronado-Blazquez , Milena Crnogorcevic , Sara Cutini , Filippo D'Ammando , Salvatore De Gaetano , Seth W. Digel , Niccolo Di Lalla , Feraol F. Dirirsa , Leonardo Di Venere , Alberto Dominguez , Vandad Fallah Ramazani , Stephen J. Fegan , Elizabeth C. Ferrara , Alessio Fiori , Henrike Fleischhack , Anna Franckowiak , Yasushi Fukazawa , Stefan Funk , Piergiorgio Fusco , Giorgio Galanti , Viviana Gammaldi , Fabio Gargano , Simone Garrappa , Dario Gasparrini , Federica Giacchino , Nico Giglietto , Francesco Giordano , Marcello Giroletti , Thomas Glanzman , David Green , Isabelle A. Grenier , Marie-Helene Grondin , Lucas Guillemot , Sylvain Guiriec , Michael Gustafsson , Alice K. Harding , Liz Hays , John W. Hewitt , Deirdre Horan , Xian Hou , Gudlaugur Johannesson , Christopher M. Karwin , Taishu Kayanoki , Matthew T. Kerr , Michael Kuss , David Landriu , Stefan Larsson , Luca Latronico , Marianne Lemoine-Goumard , Jian Li , Ioannis Liodakis , Francesco Longo , Francesco Loparco , Benoit Lott , Pasquale Lubrano , Simone Maldera , Dmitry Malyshev , Alberto Manfreda , Guillem Marti-Devesa , Mario N. Mazziotta , Isabella Mereu , Manuel Meyer , Peter F. Michelson , Nestor Mirabal , Warit Mitthumsiri , Tsunefumi Mizuno , Alex A. Moiseev , Maria E. Monzani , Aldo Morselli , Igor V. Moskalenko , Michela Negro , Eric Nuss , Nicola Omodei , Monica Orienti , Elena Orlando , David Paneque , Zhiyuan Pei , Jeremy S. Perkins , Massimo Persic , Melissa Pesce-Rollins , Vahe Petrosian , Roberta Pillera , Helen Poon , Troy A. Porter , Giacomo Principe , Silvia Raino , Riccardo Rando , Bindu Rani , Massimiliano Razzano , Soebur Razzaque , Anita Reimer , Olaf Reimer , Thierry Reposeur , Miguel A. Sanchez-Conde , Pablo M. Saz Parkinson , Lorenzo Scotton , Davide Serini , Carmelo Sgro , Eric J. Siskind , David A. Smith , Gloria Spandre , Paolo Spinelli , Kohei Sueoka , Dan J. Suson , Hiro Tajima , Dongguen Tak , Jana B. Thayer , David J. Thompson , Diego F. Torres , Eleonora Troja , Janeth Valverde , Kent Wood , Gabrijela Zaharijas

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…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Hannes-S. Zechlin , Dieter Horns

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…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Yun-Chuan Xiang , Ze-Jun Jiang

The {\it Fermi} satellite has detected $\sim$60 radio galaxies (RGs). In this study, we investigate the difference in the properties of X-ray spectra between GeV-loud RGs and GeV-quiet RGs. Our sample comprises 68 objects: 36 RGs detected…

High Energy Astrophysical Phenomena · Physics 2022-06-08 Taishu Kayanoki , Yasushi Fukazawa

Prompted by the Fermi LAT discovery of a radio-quiet gamma-ray pulsar inside the CTA 1 supernova remnant, we obtained a 130 ks XMM-Newton observation to assess the timing behavior of this pulsar. Exploiting both the unprecedented photon…

High Energy Astrophysical Phenomena · Physics 2015-05-20 P. A. Caraveo , A. De Luca , M. Marelli , G. F. Bignami , P. S. Ray , P. M. Saz-Parkinson , G. Kanbach

Fast Radio Bursts (FRBs) are a mysterious flash phenomenon detected in radio wavelengths with a duration of only a few milliseconds, and they may also have prompt gamma-ray flashes. Here we carry out a blind search for msec-duration…

High Energy Astrophysical Phenomena · Physics 2019-06-07 Shotaro Yamasaki , Tomonori Totani , Norita Kawanaka

We report on the first deep optical observations of two $\gamma$-ray pulsars, both among the very first discovered by the {\em Fermi} Gamma-ray Space Telescope. The two pulsars are the radio-loud PSR\, J1907+0602 in the TeV pulsar wind…

High Energy Astrophysical Phenomena · Physics 2016-09-21 R. P. Mignani , V. Testa , M. Marelli , A. De Luca , M. Pierbattista , M. Razzano , D. Salvetti , A. Belfiore , A. Shearer , P. Moran

Compact Symmetric Objects (CSO) are considered to be the young version of Fanaroff-Riley type I and type II radio galaxies, with typical sizes smaller than 1 kpc and ages of the order of a few thousand years. Before the launch of the Fermi…

High Energy Astrophysical Phenomena · Physics 2019-08-14 F. D'Ammando , M. Orienti , M. Giroletti

We analyzed the globular cluster M5 (NGC 5904) using 15 years of gamma-ray data from the Fermi Large Area Telescope (LAT). Using rotation ephemerides generated from Arecibo and FAST radio telescope observations, we searched for gamma-ray…

High Energy Astrophysical Phenomena · Physics 2024-03-26 X. Hou , W. Zhang , P. C. C. Freire , D. F. Torres , J. Ballet , D. A. Smith , T. J. Johnson , M. Kerr , C. C. Cheung , L. Guillemot , J. Li , L. Zhang , A. Ridolfi , P. Wang , D. Li , J. Yuan , N. Wang

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…

High Energy Astrophysical Phenomena · Physics 2024-02-29 Scott D. Joffre , Núria Torres-Albà , Marco Ajello , Daniel Kocevski , Rolf Buehler

The most energetic neutron stars, powered by their rotation, are capable of producing pulsed radiation from the radio up to gamma rays with nearly TeV energies. These pulsars are part of the universe of energetic and powerful particle…

High Energy Astrophysical Phenomena · Physics 2015-09-30 Isabelle A. Grenier , Alice K. Harding

Context. A number of novae have been found to emit high-energy gamma rays (>100 MeV). However, the origin of this emission is not yet understood. We report on the search for gamma-ray emission from 75 optically-detected Galactic novae in…

High Energy Astrophysical Phenomena · Physics 2018-02-12 A. Franckowiak , P. Jean , M. Wood , C. C. Cheung , S. Buson

We observed with the NuSTAR satellite 3 blazars at z>2, detected in gamma-rays by Fermi/LAT and in the soft X-rays, but not yet observed above 10 keV. The flux and slope of their X-ray continuum, together with Fermi/LAT data allows us to…

High Energy Astrophysical Phenomena · Physics 2019-07-10 G. Ghisellini , M. L. Perri , G. Costamante , G. Tagliaferri , T. Sbarrato , S. Campitiello , G. Madejski , F. Tavecchio , G. Ghirlanda

The pulsar glitches are generally assumed to be an apparent manifestation of the superfluid interior of the neutron stars. Most of them were discovered and extensively studied by continuous monitoring in the radio wavelengths. The Fermi-LAT…

Instrumentation and Methods for Astrophysics · Physics 2022-04-20 E. V. Sokolova , A. G. Panin

We report the detection of gamma-ray pulsations (> 0.1 GeV) from PSR J2229+6114 and PSR J1048-5832, the latter having been detected as a low-significance pulsar by EGRET. Data in the gamma-ray band were acquired by the Large Area Telescope…

High Energy Astrophysical Phenomena · Physics 2009-12-04 Fermi LAT collaboration , Fermi Pulsar Timing Consortium

The radio properties of blazars detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope have been observed as part of the VLBA Imaging and Polarimetry Survey (VIPS). This large, flux-limited sample of active…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. D. Linford , G. B. Taylor , R. Romani , S. E. Healey , J. F. Helmboldt , A. C. S. Readhead , R. Reeves , J. Richards , G. Cotter

We present evidence for $\gamma$-ray emission from a stacked population of 39 high-latitude globular clusters (GCs) not detected in the Fermi Point Source Catalog, likely attributable to populations of millisecond pulsars within them. In…

High Energy Astrophysical Phenomena · Physics 2024-10-17 Owen K. Henry , Timothy A. D. Paglione , Yuzhe Song , Joshua Tan , David Zurek , Vanessa Pinto

The Fermi Gamma-Ray Space Telescope has discovered many gamma-ray pulsars, both as radio-loud objects and radio-quiet or radio-weak pulsars that have been identified through blind period searches. The latter presumably have gamma-ray beams…

High Energy Astrophysical Phenomena · Physics 2010-02-02 Marco Pierbattista , Isabelle Grenier , Alice Harding , Peter Gonthier

Galaxy clusters could produce gamma-rays from inverse Compton scattering of cosmic ray electrons or hadronic interactions of cosmic ray protons with the intracluster medium. It is still an open question on whether gamma-ray emission ($>$…

High Energy Astrophysical Phenomena · Physics 2024-01-12 Siddhant Manna , Shantanu Desai