Central Engine and Spectral Energy Distribution Properties of High Redshift Gamma Ray Blazars
arXiv:2404.03671 · doi:10.3390/galaxies12020010
Abstract
We report on the properties of central engines in the -ray blazars located at high redshifts beyond z~>~0.4, where the extra-galactic background light (EBL) starts affecting their -ray spectra. The physical engine that provides power to the blazars of very high bolometric luminosity is assumed to be a highly collimated jet of matter moving relativistically away from the supermassive black hole (SMBH), located in the central region of the host galaxy, in a direction aligned toward the Earth. Due to their peculiar geometry and special physical conditions, blazars at redshifts beyond z~>~0.4 are bright enough to be detected in the -ray energy band. In this work, we investigate the physical properties of high- -ray blazars detected by the Large Area Telescope (LAT) on board the \emph{Fermi} satellite. We also study the properties of their emission regions and the central engines and discuss cosmological and astrophysical implications.
arXiv comment20 Pages,8 Figures, Published in Galaxies journal
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