The broad band X-ray spectra of intermediate BL Lac objects

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dc.creatorSiebert, J.
dc.creatorBrinkmann, W.
dc.creatorLaurent-Muehleisen, S. A.
dc.creatorMatsuoka, M.
dc.date1998-08-21
dc.date.accessioned2026-07-07T02:27:41Z
dc.date.available2026-07-07T02:27:41Z
dc.descriptionWe present recent X-ray observations of intermediate BL Lac objects (IBLs), i.e. BL Lacs which are located between high-energy and low-energy peaked BL Lac objects with respect to alpha_rx. We briefly discuss the statistical properties of IBLs from the RGB sample and then focus on a detailed broad band spectral analysis of two objects, namely 1424+2401 and 1055+5644, which were observed with ASCA and SAX, respectively. In both cases the spectra are steep and we find significant curvature in 1424+2401 in the sense that the spectrum gets flatter at both low (< 1 keV) and high energies (> 5 keV). Our results are in line with the hypothesis of a continuous distribution of synchrotron peak frequencies among BL Lac objects.
dc.description4 pages, incl. 6 figures, to appear in the proceedings of the 32nd COSPAR Scientific Assembly, Section E1.1, Nagoya, Japan, July 13-15 1998, Adv. in Space Research
dc.identifierhttps://arxiv.org/abs/astro-ph/9808231
dc.identifierhttp://arxiv.org/abs/astro-ph/9808231
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12798
dc.subjectAstrophysics
dc.titleThe broad band X-ray spectra of intermediate BL Lac objects
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