{ "id": "2111.04379", "version": "v1", "published": "2021-11-08T10:57:26.000Z", "updated": "2021-11-08T10:57:26.000Z", "title": "On the Origin of Gamma-ray Flares from Bright Fermi Blazars", "authors": [ "Vaidehi S. Paliya", "Markus Boettcher", "Mark Gurwell", "C. S. Stalin" ], "comment": "ApJS, in press", "doi": "10.3847/1538-4365/ac365d", "categories": [ "astro-ph.HE" ], "abstract": "The origin of gamma-ray flares observed from blazars is one of the major mysteries in jet physics. We have attempted to address this problem following a novel spectral energy distribution (SED) fitting technique that explored the flaring patterns identified in the broadband SEDs of two gamma-ray bright blazars 3C 279 (z=0.54) and 3C 454.3 (z=0.86), using near-simultaneous radio-to-gamma-ray observations. For both sources, the gamma-ray flux strongly correlates with the separation of the SED peaks and the Compton dominance. We propose that spectral hardening of the radiating electron population and/or enhancement of the Doppler factor can naturally explain these observations. In both cases, magnetic reconnection may play a pivotal role in powering the luminous gamma-ray flares.", "revisions": [ { "version": "v1", "updated": "2021-11-08T10:57:26.000Z" } ], "analyses": { "keywords": [ "bright fermi blazars", "novel spectral energy distribution", "gamma-ray bright blazars 3c", "gamma-ray flux strongly correlates", "compton dominance" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }