Results 11 to 20 of about 6,020,151 (174)
A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131
Nature Communications, 2018 PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation ...
Jianeng Zhou +7 more
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Fast γ-ray Variability: A Common Feature and Powerful Probe for Jetted AGNs
Galaxies, 2018 Among the highly dynamical non-thermal universe, flashes of γ-ray photons from jets in active galactic nuclei (AGNs) are always attractive. Not only are they extraordinary observational phenomena, but they also become powerful probes of the jets ...
Neng-hui Liao
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Identifying the Gamma-Ray Emission of the Nearby Galaxy M83
The Astrophysical Journal, 2023 We report on the detection of a γ -ray source at the position of the nearby star-forming galaxy (SFG) M83, which is found from our analysis of 14 yr of the data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi ...
Yi Xing, Zhongxiang Wang
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The Fermi Large Area Telescope [PDF]
, 2022 The Large Area Telescope, the primary instrument on the Fermi Gamma-ray Space Telescope, is an imaging, wide field-of-view gamma-ray telescope. After many improvements to the data acquisition and event analysis procedures, it now covers the broad energy ...
Rando, Riccardo, Rando, R.
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High-energy gamma- and cosmic-ray observations with future space-based GAMMA-400 gamma-ray telescope [PDF]
EPJ Web of Conferences, 2019 The future space-based GAMMA-400 gamma-ray telescope will be installed on the Navigator platform of the Russian Astrophysical Observatory. A highly elliptical orbit will provide observations for 7-10 years of many regions of the celestial sphere ...
Topchiev N.P. +17 more
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Fermi Gamma-ray Space Telescope
, 2022 The Fermi Gamma-ray Space Telescope, a key mission in multiwavelength and multimessenger studies, has been surveying the gamma-ray sky from its low-Earth orbit since 2008.
Wilson-Hodge, Colleen A. +1 more
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Probing photon-ALP oscillations from the flat spectrum radio quasar 4C+21.35
Physics Letters B, 2022 Flat spectrum radio quasar (FSRQ) is the most luminous blazar at the GeV energies. In this paper, we probe the photon-axion-like particle (ALP) oscillation effect on the latest very-high-energy (VHE) γ-ray observations of the FSRQ 4C+21.35 (PKS 1222+216).
Hai-Jun Li
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The Fermi Gamma-ray Burst Monitor: Results from the first two years [PDF]
, 2011 In the first two years since the launch of the Fermi Observatory, the Gamma-ray Burst Monitor (GBM) has detected over 500 Gamma-Ray Bursts (GRBs), of which 18 were confidently detected by the Large Area Telescope (LAT) above 100 MeV.
BISSALDI, ELISABETTA +2 more
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High Energy Observational Investigations of Supernova Remnants and their Interactions with Surroundings [PDF]
Journal of Astronomy and Space Sciences, 2013 Here we review the effort of Fermi Asian Network (FAN) in exploring the supernova remnants (SNRs) with state-of-art high energy observatories, including Fermi Gamma-ray Space Telescope and Chandra X-ray Observatory, in the period of 2011- 2012 ...
Chung-Yue Hui
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MeV gamma-ray constraints for light dark matter from semi-annihilation
Physics Letters B, 2023 Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally.
Jun Guo, Lei Wu, Bin Zhu
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