BeppoSAX Observations of the TeV Blazar Mkn 421

Details BeppoSAX Observations of the TeV Blazar Mkn 421 BeppoSAX Observations of the TeV Blazar Mkn 421

1998-04-09

arxiv.org/abs/astro-ph/9804101v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 Postscript figures, uses espcrc2.sty and psfig.sty (both included). To appear in "The Active X-ray Sky: Results fro

Scientific paper

10.1016/S0920-5632(98)00254-0

The blazar Mkn 421 has been observed, as part of the AO1 Core Program, five times from 2 to 7 May 1997. In the LECS+MECS energy band the spectrum shows convex curvature, well represented by a broken power--law. Flux variability (more than a factor 2) has been detected over the entire 0.1--10 keV range, accompanying which the spectrum steepens with the decrease in intensity. Mkn 421 has also been detected with the PDS instrument. Our preliminary analysis indicates that the PDS spectrum lies significantly above the extrapolation from the MECS, suggesting a contribution from a flatter high energy component.

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