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BL Lacertae: the multiwavelength campaign of 2000

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 نشر من قبل Marcello Ravasio
 تاريخ النشر 2002
  مجال البحث فيزياء
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 تأليف M. Ravasio




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We present two BeppoSAX observations of BL Lacertae as part of a multiwavelength radio-to-TeV campaign. During the first observation we observe a faint Compton spectrum, while during the second, we detect a synchrotron spectrum with the highest [2-10] keV flux ever measured; above 10 keV an inverse Compton component begin to dominate. The synchrotron flux is very variable with time scales of 1 hr. We describe four different SED shifting the synchrotron peak both in frequency and flux intensity and we sketch a scenario in which a blob moves along a jet and can be located in or outside the BLR. This implies different radiative mechanism at work, SSC or external Compton, producing different high energy spectra.



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348 - M. Ravasio 2003
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