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28 April 2024 |
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High Energy Properties of X-ray Sources observed with BeppoSAX | | F. Frontera
; D. Dal Fiume
; G. Malaguti
; L. Nicastro
; M. Orlandini
; E. Palazzi
; E. Pian
; F. Favata
; A. Santangelo
; | | Date: |
6 Feb 1998 | | Subject: | astro-ph | | Affiliation: | 1,2), D. Dal Fiume , G. Malaguti , L. Nicastro , M. Orlandini , E. Palazzi , E. Pian , F. Favata , A. Santangelo ( Physics Dept, University of Ferrara; ITESRE, CNR, Bologna; SSD, ESTEC, Noordwijk; IFCAI, CNR, Palermo | | Abstract: | We report on highlight results on celestial sources observed in the high energy band (>20 keV) with BeppoSAX. In particular we review the spectral properties of sources that belong to different classes of objects, i.e. stellar coronae (Algol), supernova remnants (Cas A), low mass X-ray binaries (Cygnus X-2 and the X-ray burster GS1826-238), black hole candidates (Cygnus X-1) and Active Galactic Nuclei (Mkn 3). We detect, for the first time, the broad-band spectrum of a stellar corona up to 100 keV; for Cas A we report upper limits to the ^44Ti line intensities that are lower than those available to date; for Cyg X-2 we report the evidence of a high energy component; we report a clear detection of a broad Fe K line feature from Cygnus X-1 in soft state and during its transition to hard state; Mkn 3 is one of several Seyfert 2 galaxies detected with BeppoSAX at high energies, for which Compton scattering process is important. | | Source: | arXiv, astro-ph/9802078 | | Services: | Forum | Review | PDF | Favorites | |
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