The X-Ray Spectra of Blazars: Analysis of the Complete EXOSAT Archive
Abstract
We analyzed the 0.1-10 keV spectra of 26 blazars (21 BL Lac objects and 5 highly polarized quasars), on the basis of 93 exposures taken from the EXOSAT archives. Fits were performed first with a single power-law model. Indications are found that better fits can be obtained with models where the slope steepens at higher energies. We therefore considered a broken power law and found that in a large fraction of the spectra the fit is significantly improved. Fits with a power law + oxygen edge at 0.6 keV are also explored.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- December 1994
- DOI:
- 10.1086/192102
- Bibcode:
- 1994ApJS...95..371S
- Keywords:
-
- Astronomical Catalogs;
- Bl Lacertae Objects;
- Quasars;
- Stellar Models;
- X Ray Astronomy;
- X Ray Spectra;
- Astronomical Spectroscopy;
- Exosat Satellite;
- Mathematical Models;
- Oxygen;
- Spaceborne Astronomy;
- Astronomy;
- GALAXIES: BL LACERTAE OBJECTS: GENERAL;
- GALAXIES: QUASARS: GENERAL;
- X-RAYS: GALAXIES