Towards the end of the BeppoSAX mission, the only operated Narrow Field Instrument was the PDS, which covers the energy range 13-300 keV. Two blazars, 1ES 0507-040 (z=0.304) and PKS 1229-021 (z=1.045), suitably located in the sky for BeppoSAX pointing, were observed for about 2 days each in Spring 2002 with the PDS and detected up to 50 keV. 1ES0507-040 had already been observed by the BeppoSAX NFIs at an earlier epoch for a much shorter time. We have re-analysed those data as well, and identified a possible contamination problem in the PDS spectrum. We present our recent PDS data on both sources, combined with the previous BeppoSAX data and with non-simultaneous observations at other frequencies. The derived Spectral Energy Distributions allow us to discuss the origin of the high energy component.
|Data di pubblicazione:||2004|
|Titolo:||The last gift of BeppoSAX: PDS observations of the two blazars 1ES 0507-040 and PKS 1229-021|
|Rivista:||NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS|
|Digital Object Identifier (DOI):||10.1016/j.nuclphysbps.2004.04.023|
|Codice identificativo ISI:||WOS:000223224300025|
|Appare nelle tipologie:||Articolo su Rivista|