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BeppoSAX Observations of the TeV Blazar Mkn 421 | | G. Fossati
; L. Chiappetti
; on behalf of the "Steep Blazars" collaboration
; | | Date: |
9 Apr 1998 | | Subject: | astro-ph | | Affiliation: | International School for Advanced Studies, SISSA/ISAS, Italy; Istituto di Fisica Cosmica e Tecnologie Relative, IFCTR/CNR, Milano, Italy | | Abstract: | 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. | | Source: | arXiv, astro-ph/9804101 | | Services: | Forum | Review | PDF | Favorites | |
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