Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-07
Astronomy and Astrophysics
Astrophysics
4 pages, proceedings of `X-ray Astronomy '999 -- Stellar Endpoints, AGN and the Diffuse Background", held in Bologna - Italy,
Scientific paper
10.1063/1.1434797
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.
Caccianiga Alessandro
Ghisellini Gabriele
Tagliaferri Gianpiero
Tavecchio Fabrizio
Wolter Anna
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