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Log-parabolic spectra and particle acceleration in the BL Lac object Mkn 421: spectral analysis of the complete BeppoSAX wide band X-ray data set
E. Massaro, M. Perri, P. Giommi +1
We report the results of a new analysis of 13 wide band BeppoSAX observations of the BL Lac object Mkn 421. The data from LECS, MECS and PDS, covering an energy interval from 0.1 t…
BeppoSAX Observations of 1-Jy BL Lacertae Objects - II
P. Padovani, L. Costamante, P. Giommi +3
We present new BeppoSAX LECS and MECS observations, covering the energy range 0.1 - 10 keV (observer's frame), of four BL Lacertae objects selected from the 1 Jy sample. All source…
Wide band X-ray and optical observations of the BL Lac object 1ES 1959+650 in high state
G. Tagliaferri, M. Ravasio, G. Ghisellini +5
The blazar 1ES 1959+650 was observed twice by BeppoSAX in September 2001 simultaneously with optical observations. We report here the X-ray data together with the optical, R_C magn…
The AGILE Archive and Data Processing at the ASI Science Data Center
Elisabetta Memola, Paolo Giommi
AGILE (Astro-rivelatore Gamma ad Immagini LEggero) is a Small Scientific Mission of the Italian Space Agency (ASI) with a Science Program open to the national and international com…
Evidence for a Significant Blazar Contamination in CMB Anisotropy Maps
P. Giommi, S. Colafrancesco
The analysis of the recent WMAP source catalog shows that the vast majority of bright foreground extragalactic sources detected in CMB maps are Blazars. In this paper we calculate…
XMM-Newton Observations of the Field of Gamma-Ray Burst 980425
E. Pian, P. Giommi, L. Amati +12
The error box of GRB980425 has been observed by XMM-Newton in March 2002, with the aim of measuring the late epoch X-ray emission of the supernova 1998bw and of clarifying its supp…