In the first 3.5 years of operations, Fermi detected several sources whose flaring activity brought them to exceed daily fluxes brighter than F(E > 100MeV) > 10(-6) ph cm(-2) s(-1). These episodes were promptly reported to the scientific community by the Fermi collaboration by means of astronomer telegrams (ATels). We focus our attention on the sample composed by these flaring sources, most of which are blazars, known to be extremely variable over the whole electromagnetic spectrum, from radio to gamma-ray energies. We study properties of the selected sample and compare them to general characteristics of the Fermi source catalogue.
Fermi LAT View of a Sample of Flaring gamma-Ray AGNs / Buson S; Bastieri D; DAmmando F; Tosti G. - In: JOURNAL OF ASTROPHYSICS AND ASTRONOMY. - ISSN 0250-6335. - STAMPA. - 35:3(2014), pp. 373-378. (Intervento presentato al convegno Conference on Variability of Blazars - From Jansky to Fermi tenutosi a Guangzhou, China nel 2012) [10.1007/s12036-014-9233-9].
Fermi LAT View of a Sample of Flaring gamma-Ray AGNs
D'AMMANDO, FILIPPO;
2014
Abstract
In the first 3.5 years of operations, Fermi detected several sources whose flaring activity brought them to exceed daily fluxes brighter than F(E > 100MeV) > 10(-6) ph cm(-2) s(-1). These episodes were promptly reported to the scientific community by the Fermi collaboration by means of astronomer telegrams (ATels). We focus our attention on the sample composed by these flaring sources, most of which are blazars, known to be extremely variable over the whole electromagnetic spectrum, from radio to gamma-ray energies. We study properties of the selected sample and compare them to general characteristics of the Fermi source catalogue.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
