0 v 1 1 4 Ja n 19 97 FIRST RESULTS FROM BeppoSAX

ar X iv : a st ro - p h / 99 01 14 4 v 1 1 2 Ja n 19 99 BeppoSAX observations of bright Seyfert 2 galaxies

We report on BeppoSAX broad band (0.1-100 keV) observations of bright Seyfert 2 galaxies and discuss the results in the framework of the unified theory of AGNs. The data are used to probe N H distribution in type 2 objects and to identify heavily absorbed (10 24 ≤ N H ≤ 10 25 cm −2) sources, which are particularly bright in hard X-rays. They also provide, for the first time, high energy spectra...

ar X iv : a st ro - p h / 98 01 13 0 v 1 1 4 Ja n 19 98 1 BeppoSAX detection of the Fe K line in the starburst galaxy NGC 253

Preliminary results obtained from BeppoSAX observation of the starburst galaxy NGC253 are presented. X-ray emission from the object is clearly extended but most of the emission is concentrated on the optical nucleus. Preliminary analysis of the LECS and MECS data obtained using the central 4' region indicates that the continuum is well fitted by two thermal components at 0.9 keV and 7 keV. Fe K...

ar X iv : n uc l - th / 9 90 10 97 v 2 3 0 Ja n 19 99 1 The Landau - Migdal Parameters , g ′ NN and g ′ N ∆ and Pion

ar X iv : a st ro - p h / 97 01 22 8 v 1 2 9 Ja n 19 97 Large - scale Structures revealed by Wavelet Decomposition 1

ar X iv : a st ro - p h / 99 01 23 3 v 1 1 8 Ja n 19 99 Long term BeppoSAX - WFC monitoring of GRS 1758 - 258

Following a series of deep observations of the Galactic Bulge region performed with the Wide Field Cameras telescopes on board BeppoSAX, it has been possible to study throughout a long time period a number of persistent X-ray sources. We report on the behaviour of GRS 1758-258, an X-ray binary suggested as a black hole candidate on the basis of its timing and spectral characteristics. The sourc...