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INTEGRAL observations of the blazar Mrk 421 in outburst (Results of a multi-wavelength campaign)

hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorLICHTI, G. G.
dc.contributor.authorBOTTACINI, E.
dc.contributor.authorAJELLO, Marco
hal.structure.identifierCytokines, hématopoïèse et réponse immune [CHRI]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierGroupement de Recherche en Économie Quantitative d'Aix-Marseille [GREQAM]
dc.contributor.authorCHARLOT, P.
dc.contributor.authorCOLLMAR, W.
dc.contributor.authorFALCONE, A.
dc.contributor.authorHORAN, D.
dc.contributor.authorHUBER, S.
hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorVON KIENLIN, A.
dc.contributor.authorLÄHTEENMÄKI, A.
dc.contributor.authorLINDFORS, E.
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorMORRIS, D.
dc.contributor.authorNILSSON, K.
dc.contributor.authorPETRY, D.
dc.contributor.authorRÜGER, M.
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorSILLANPÄÄ, A.
dc.contributor.authorSPANIER, F.
dc.contributor.authorTORNIKOSKI, M.
dc.date.created2008
dc.date.issued2008
dc.identifier.issn0004-6361
dc.description.abstractEnWe report the results of a multi-wavelength campaign on the blazar Mrk 421 during outburst. We observed four strong flares at X-ray energies that were not seen at other wavelengths (partially because of missing data). From the fastest rise in the X-rays, an upper limit could be derived on the extension of the emission region. A time lag between high-energy and low-energy X-rays was observed, which allowed an estimation of the magnetic-field strength. The spectral analysis of the X-rays revealed a slight spectral hardening of the low-energy (3 - 43 keV) spectral index. The hardness-ratio analysis of the Swift-XRT (0.2 - 10 keV) data indicated a small correlation with the intensity; i. e., a hard-to-soft evolution was observed. At the energies of IBIS/ISGRI (20 - 150 keV), such correlations are less obvious. A multiwavelength spectrum was composed and the X-ray and bolometric luminosities are calculated.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enINTEGRAL observations of the blazar Mrk 421 in outburst (Results of a multi-wavelength campaign)
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361:20079199
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv0805.2577
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.page721-734
bordeaux.volume486
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-00299832
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00299832v1
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