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- W1648007637 abstract "Primary gamma rays emitted by extragalactic sources, such as blazars, will generate electromagnetic cascades in intergalactic space. These cascades proceed via electron-positron pair production and inverse Compton scattering on cosmic background radiation, mainly the cosmic microwave background (CMB) and extragalactic background light (EBL) fields. The existence of an extragalactic magnetic field (EGMF) could deflect electron-positron pair trajectories and scatter the cascade photons, possibly creating a halo around the source while suppressing the cascade flux collected by a detector. We develop a semi-analytic model for the cascade process and apply it to combined GeV-TeV data on high- frequency-peaked BL Lacertae objects (HBLs) from the Fermi Large Area Telescope (LAT) and ground-based Cherenkov telescopes, comparing observation results with model predictions using a robust statistical framework. Lower limits with different confidence levels on the field strength of the EGMF derived from this procedure are discussed under various assumptions about the source livetime." @default.
- W1648007637 created "2016-06-24" @default.
- W1648007637 creator A5073436749 @default.
- W1648007637 date "2011-09-13" @default.
- W1648007637 modified "2023-09-27" @default.
- W1648007637 title "Semi-Analytic Model for Intergalactic Gamma-Ray Cascades in Extragalactic Magnetic Fields" @default.
- W1648007637 hasPublicationYear "2011" @default.
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