SUMMARY OF PROPOSAL 53023

DR. LUIGI PIRO
PIRO@ALPHA1.IAS.FRA.CNR.IT

I.A.S./C.N.R.
ROMA ITALY I-00044
FRASCATI
VIA ENRICO FERMI 21
Tel: +39-6-9424589 Fax: +39-6-9416847
Medium: 4GBDAT
Subject: AGN

QUEST FOR TYPE 3 SEYFERT GALAXIES


ABSTRACT

Recent ROSAT observations revealed several HII objects with a soft X-ray luminosity up to $10^{43}$ erg/s and, in at least one case, a factor of one magnitude variability on short time scales. These objects may therefore harbour a hidden Seyfert nucleus. We propose to observe a sample of three HII galaxies, for which no measurement in the hard X-ray is available, in order to: a) reveal the hard X-ray emission to clarify its possible Seyfert-like origin; b) derive from the X-ray spectrum the properties of the absorber, whose presence would be required to account for the lack of narrow emission lines typical of Seyfert galaxies; c) study on a wider time and energy range the spectral variability associated with the large variations already observed in one of these objects.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
MATTEO GUAINAZZIASI SAX/SDCITALY
THOMAS BOLLERMPEGERMANY
PIERO RAFANELLIOSS.ASTR.PADOVAITALY
PAOLA GRANDII.A.S./C.N.R.ITALY
MICHEL DENNEFELDIAP PARISFRANCE

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)IRAS 12393+3520
1
190.4350 35.0621 40 ksN
Y
P
0.20000
1