Hard synchrotron BL Lacs: the case of 1ES 1101-232
Astrophysics
2009-10-31 v1
Abstract
The bright X-ray selected BL Lac object 1ES1101--232 shows a flat X-ray spectrum, making it detectable with high statistics over the wide BeppoSAX energy range. We have observed it in two different epochs with BeppoSAX, and found a variation of the flux of about 30% that can be explained by a change in the spectral index above the synchrotron peak. We present here the data and infer limits on the strength of the magnetic field based on models of emission for High-frequency peaked BL Lacs.
Cite
@article{arxiv.astro-ph/0007090,
title = {Hard synchrotron BL Lacs: the case of 1ES 1101-232},
author = {Anna Wolter and Gabriele Ghisellini and Gianpiero Tagliaferri and Fabrizio Tavecchio and Alessandro Caccianiga},
journal= {arXiv preprint arXiv:astro-ph/0007090},
year = {2009}
}
Comments
4 pages, proceedings of `X-ray Astronomy '999 -- Stellar Endpoints, AGN and the Diffuse Background", held in Bologna - Italy, September 6-10, 1999, Astrophysical Letters and Communications. Needs bo99.sty