Intrinsic Curvature in the X-ray Spectra of BL Lacertae Objects

Details Intrinsic Curvature in the X-ray Spectra of BL Lacertae Objects Intrinsic Curvature in the X-ray Spectra of BL Lacertae Objects

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..350..191p&link_type=abstract

Blazar Variability Workshop II: Entering the GLAST Era ASP Conference Series, Vol. 350, Proceedings of the Conference Held 10-12

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report results from XMM-Newton observations of thirteen X-ray bright BL Lacertae objects, selected from the Einstein Slew Survey sample. The survey was designed to look for evidence of either curvature or line features in the X-ray spectra. Previous data had suggested absorption features in the X-ray spectra of some BL Lacs; however, none of our spectra show convincing examples of lines, either in absorption or emission. We find significant evidence for a constant, likely intrinsic, curvature in 14 of 17 X-ray spectra. We model the curvature as resulting from episodic particle acceleration.

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