BATSE OBSERVATIONS OF SEYFERT-2 GALAXIES

Citation
L. Bassani et al., BATSE OBSERVATIONS OF SEYFERT-2 GALAXIES, Astronomy & Astrophysics. Supplement series, 120(4), 1996, pp. 559-562
Citations number
18
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
120
Issue
4
Year of publication
1996
Pages
559 - 562
Database
ISI
SICI code
0365-0138(1996)120:4<559:BOOSG>2.0.ZU;2-K
Abstract
We use the BATSE Earth occultation technique applied to the LAD data t o search for emission in the 20-100 keV band from Seyfert 2 galaxies. Analysis from an initial sample of 17 objects indicates significant de tection at (> 6 sigma) from 5 objects, while marginal detection (3 < s igma < 6) can be claimed for other 4, possibly 5, galaxies. The high r ate (59% of the observed sample) of detection indicates both that Seyf ert 2 galaxies are indeed hard X-ray emitters as expected by the unifi ed theory of Seyfert galaxies and that BATSE has a high efficiency in discovering emission from this class of objects. Here, we report on th ese preliminary results, discuss their implications and outline future prospects of this on-going research program.