منابع مشابه
SWIFT observations of TeV BL Lac objects
Context. We present the results of a set of observations of nine TeV detected BL Lac objects performed by the XRT and UVOT detectors on board the S wi f t satellite between March and December 2005. Aims. We are mainly interested in measuring the spectral parameters, and particularly the intrinsic curvature in the X-ray band. Methods. We perform X-ray spectral analysis of observed BL Lac TeV obj...
متن کاملTeV candidate BL Lac objects
The TeV emission of low power BL Lac objects has been established by the detection of an handful of them. The knowledge of the level of the TeV emission and its spectrum can shed light on the particle acceleration mechanisms, and it is especially important to assess the still uncertain level of the far infrared background radiation, which can absorb the TeV photons through photon–photon interac...
متن کاملTeV Observation of BL Lac Objects
During the 10 years of existence of the HEGRA Cherenkov telescopes a large fraction of the time was spent on the observation of BL Lac objects. Here we present an overview of some of the main results and give an outlook on the next generation of Cherenkov telescopes.
متن کاملBroadband variability of TeV BL Lac objects
BL Lac objects provide a direct view on the high energetic jet and offer the possibility to study the emission processes and the particle acceleration in the jet because of their broad emission range over the whole electromagnetic spectrum up to TeV energies. The variability information gives a direct estimation of the maximum size of the emission region. Under the assumption of the synchrotron...
متن کاملTwo Bepposax Observations of Bl Lac
We present the results of two ToO BeppoSAX observations of BLLac. During the first observation we detected both the synchrotron and the Compton components. Fast time variability was present, but only for the synchrotron component. During the second observation the spectrum was flatter and only the Compton component was present. Four different SED are presented and can be described by a blob mov...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2013
ISSN: 0067-0049,1538-4365
DOI: 10.1088/0067-0049/207/1/16