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All-sky Medium Energy Gamma-ray Observatory eXplorer mission concept [PDF]
Journal of Astronomical Telescopes Instruments and Systems, 2022 . The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions and accelerators. The main science themes include supermassive black holes and their connections to neutrinos
R. Caputo +54 more
semanticscholar +1 more source
Revision of the γ-Ray Emission from SNR CTB 109 with the Fermi Large Area Telescope
The Astrophysical Journal, 2023 CTB 109 is a middle-aged shell-type supernova remnant (SNR) with bright thermal X-ray emission. We reanalyze the GeV γ -ray emission from CTB 109 using 13 yr of Pass 8 data recorded by the Fermi Large Area Telescope.
Yuliang Xin, Qizhen Zhao, Xiaolei Guo
doaj +1 more source
Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow. [PDF]
Science, 2021 Gamma-ray bursts (GRBs), which are bright flashes of gamma rays from extragalactic sources followed by fading afterglow emission, are associated with stellar core collapse events.
H. Abdalla +237 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We present an analysis of γ -ray emission in the direction of supernova remnant (SNR) G15.4+0.1 with 13 yr Fermi Large Area Telescope data. There are three point-like GeV sources in this region: one is spatially coincident with the TeV source HESS J1818 ...
Yuan Li, Yuliang Xin, Siming Liu, Yu He
doaj +1 more source
The Gamma-ray Window to Intergalactic Magnetism [PDF]
Universe, 2021 One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or cosmic rays in the intergalactic space.
R. Alves Batista, A. Saveliev
semanticscholar +1 more source
Two Candidate Pulsar TeV Halos Identified from Property-similarity Studies
The Astrophysical Journal, 2023 Teraelectronvolt halos have been suggested to be a common phenomenon associated with middle-aged pulsars. Based on our recent work on the middle-aged pulsar J0631+1036, which is the only known source positionally coincident with a hard teraelectronvolt γ
Dong Zheng, Zhongxiang Wang
doaj +1 more source
The Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars
Astrophysical Journal, 2023 We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio searches of LAT sources will likely reveal pulsations once phase-connected
D. A. Smith +170 more
semanticscholar +1 more source
Swift Follow-up of Reported Radio Pulsars at Fermi 4FGL Unassociated Sources
The Astrophysical Journal, 2023 Following the discovery of radio pulsars at the position of Fermi-LAT unassociated sources by the TRAPUM group, we conduct Swift-XRT observations of six of those 4FGL sources to determine if any pulsar-like X-ray sources are present and to confirm the ...
Stephen Kerby +2 more
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Chapter 2 Galactic Gamma-ray Sources *
Chinese Physics C, 2022 Abstract In the γ-ray sky, the highest fluxes come from Galactic sources: supernova remnants (SNRs), pulsars and pulsar wind nebulae, star forming regions, binaries and micro-quasars, giant molecular clouds, Galactic center, and the large extended area around the Galactic plane.
Chen, Yang +9 more
openaire +1 more source
CLASSIFICATION AND RANKING OF FERMI LAT GAMMA-RAY SOURCES FROM THE 3FGL CATALOG USING MACHINE LEARNING TECHNIQUES [PDF]
, 2016 We apply a number of statistical and machine learning techniques to classify and rank gamma-ray sources from the Third Fermi Large Area Telescope Source Catalog (3FGL), according to their likelihood of falling into the two major classes of gamma-ray ...
P. S. Parkinson +6 more
semanticscholar +1 more source