Multiwavelength observations of mrk 501 in 2008

D. Kranich, D. Paneque, A. Cesarini, A. Falcone, M. Giroletti, E. Hoversten, T. Hovatta, Y. Y. Kovalev, A. Lähteenmäki, E. Nieppola, C. Pagani, A. Pichel, K. Satalecka, J. Scargle, D. Steele, F. Tavecchio, D. Tescaro, M. Tornikoski, M. Villata

Research output: Contribution to conferencePaperpeer-review


The well-studied VHE (E > 100 GeV) blazar Mrk 501 was observed between March and May 2008 as part of an extensive multiwavelength observation campaign including radio, optical, X-ray and VHE gamma-ray instruments. Mrk 501 was in a low state of activity during the campaign, with a low VHE flux of about 20% the Crab Nebula flux. Nevertheless, significant flux variations could be observed in X-rays as well as -rays. Overall Mrk 501 showed increased variability when going from radio to -ray energies. The broadband spectral energy distribution during the two different emission states of the campaign was well described by a homogeneous one-zone synchrotron self-Compton model. The high emission state was satisfactorily modeled by increasing the amount of high energy electrons with respect to the low emission state. This parameterization is consistent with the energy-dependent variability trend observed during the campaign.

Original languageEnglish (US)
StatePublished - 2009
Event31st International Cosmic Ray Conference, ICRC 2009 - Lodz, Poland
Duration: Jul 7 2009Jul 15 2009


Other31st International Cosmic Ray Conference, ICRC 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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