ARGO-YBJ is an extensive air shower detector exploiting the full coverage approach at high altitude (4300 m a.s.l.), designed for gamma-ray astronomy and cosmic-ray physics in the 300 GeV - 30 TeV energy range. One of the most intense gamma-ray sources detected by ARGO-YBJ is Mrk421. It is a blazar close to the Earth (redshift: z = 0.031), intensively studied because of its highly varying flaring activity. During the last four years, three major flaring periods have been observed by ARGO-YBJ, in July 2006, in June 2008 and in February 2010. Thsee flares show interesting spectral features, mostly as far as the relation between the X-ray and the gamma-ray emissions is concerned. The status of the observation of Mrk421 is reported. Copyright © 2010 by INFN.
Monitoring the mrk421 flaring activity by the ARGO-YBJ experiment / Iuppa, R.. - 51:(2010), pp. 31-36. (Intervento presentato al convegno 2nd Young Researcher Workshop on "Physics Challenges in the LHC Era", in Conjunction with the 15th Frascati Spring School "Bruno Touschek" in Nuclear Subnuclear and Astroparticle Physics tenutosi a Frascati, ita nel 2010).
Monitoring the mrk421 flaring activity by the ARGO-YBJ experiment
Iuppa R.
2010-01-01
Abstract
ARGO-YBJ is an extensive air shower detector exploiting the full coverage approach at high altitude (4300 m a.s.l.), designed for gamma-ray astronomy and cosmic-ray physics in the 300 GeV - 30 TeV energy range. One of the most intense gamma-ray sources detected by ARGO-YBJ is Mrk421. It is a blazar close to the Earth (redshift: z = 0.031), intensively studied because of its highly varying flaring activity. During the last four years, three major flaring periods have been observed by ARGO-YBJ, in July 2006, in June 2008 and in February 2010. Thsee flares show interesting spectral features, mostly as far as the relation between the X-ray and the gamma-ray emissions is concerned. The status of the observation of Mrk421 is reported. Copyright © 2010 by INFN.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
