Results 71 to 80 of about 479,061 (218)
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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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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Spider Invasion Across the Galaxy [PDF]
Journal of Astronomy and Space Sciences, 2014 The nature of the exotic stellar corpses which reincarnate by consuming their companion is reviewed. Apart from sucking life from their partners, they are actually eating the doomed companions away by their deadly and powerful particle/radiation beams.
Chung-Yue Hui
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Light speed variation from gamma ray bursts: criteria for low energy photons
European Physical Journal C: Particles and Fields, 2018 We examine a method to detect the light speed variation from gamma ray burst data observed by the Fermi Gamma-ray Space Telescope (FGST). We suggest new criteria to determine the characteristic time for low energy photons by the energy curve and the ...
Yue Liu, Bo-Qiang Ma
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A Combined Radio Multi-Survey Catalog of Fermi Unassociated Sources
The Astrophysical Journal, 2023 Approximately one-third of existing γ -ray sources identified by the Fermi Gamma-Ray Space Telescope are considered to be unassociated, with no known counterpart at other frequencies/wavelengths.
S. Bruzewski +2 more
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Recombining Plasma in the Gamma-ray Emitting Mixed-Morphology Supernova Remnant 3C 391 [PDF]
, 2014 A group of middle-aged mixed-morphology (MM) supernova remnants (SNRs) interacting with molecular clouds (MC) has been discovered as strong GeV gamma-ray emitters by Large Area Telescope on board Fermi Gamma Ray Space Telescope (Fermi-LAT).
Bayırlı, Arif +6 more
core +2 more sources
Classification of unassociated fermi-LAT sources [PDF]
ITM Web of Conferences, 2022 The Large Area Telescope (LAT) on board NASA’s Fermi Gamma-ray Space telescope has detected 5788 sources in the 4FGL catalogue. Among them, 271 have been associated to pulsars, 3436 to blazars, and 1782 remain unassociated sources.
Meng Qiyu
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The VLBA-BU-BLAZAR Multi-Wavelength Monitoring Program
Galaxies, 2016 We describe a multiwavelength program of monitoring of a sample of bright γ-ray blazars, which the Boston University (BU) group has being carrying out since June 2007.
Svetlana Jorstad, Alan Marscher
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3HWC J0631+107/LHAASO J0631+1040: A TeV Halo Powered by the Pulsar J0631+1036?
The Astrophysical Journal, 2023 PSR J0631+1036 is a middle-aged pulsar with properties similar to those of the nearby Geminga pulsar. It is bright in γ -rays, and has been noted as the only source possibly associated with the TeV source 3HWC J0631+107 (also the LHAASO J0631+1040).
Dong Zheng, Zhongxiang Wang, Yi Xing
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γ-Ray and ultra-high energy neutrino background suppression due to solar radiation
Physics Letters B, 2023 The Sun emits copious amounts of photons and neutrinos in an approximately spatially isotropic distribution. Diffuse γ-rays and ultra-high energy (UHE) neutrinos from extragalactic sources may subsequently interact and annihilate with the emitted solar ...
Shyam Balaji
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