Matches in SemOpenAlex for { <https://semopenalex.org/work/W3006118082> ?p ?o ?g. }
- W3006118082 abstract "Primary very high energy $ensuremath{gamma}$ rays from $ensuremath{gamma}$-ray bursts (GRBs) are partially absorbed on extragalactic background light photons with subsequent formation of intergalactic electromagnetic cascades. Characteristics of the observable cascade $ensuremath{gamma}$-ray signal are sensitive to the strength and structure of the extragalactic magnetic field (EGMF). GRB 190114C was recently detected with the MAGIC imaging atmospheric Cherenkov telescopes, for the first time allowing us to estimate the observable cascade intensity. We inquire whether any constraints on the EGMF strength and structure could be obtained from publicly available $ensuremath{gamma}$-ray data on GRB 190114C. We present detailed calculations of the observable cascade signal for various EGMF configurations. We show that the sensitivity of the Fermi-LAT space $ensuremath{gamma}$-ray telescope is not sufficient to obtain such constraints on the EGMF parameters. However, next-generation space $ensuremath{gamma}$-ray observatories such as MAST would be able to detect pair echoes from GRBs similar to GRB 190114C for the EGMF strength below ${10}^{ensuremath{-}17}--{10}^{ensuremath{-}18}text{ }text{ }mathrm{G}$." @default.
- W3006118082 created "2020-02-24" @default.
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- W3006118082 date "2020-12-15" @default.
- W3006118082 modified "2023-10-15" @default.
- W3006118082 title "Can we constrain the extragalactic magnetic field from very high energy observations of GRB 190114C?" @default.
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- W3006118082 doi "https://doi.org/10.1103/physrevd.102.123017" @default.
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