SUMMARY OF PROPOSAL 72123
COLUMBIA UNIVERSITY
550 WEST 120TH STREET
NEW YORK
NY USA 10027
Tel: 212-854-6892 Fax: 212-854-8121
Medium: CD ROM
Subject: AGN
ASCA OBSERVATIONS OF POLARIZED SEYFERT 1 GALAXIES
ABSTRACT
Our recent ASCA observation of Mrk 704, a highly polarized optically blue Seyfert 1 galaxy, shows evidence for partial covering by heavy absorption. This result is difficult to explain in terms of simple models. Dust-free gas must be present in the line of sight to the nucleus, but a significant amount of dust out of the line of sight is required also to produce the high polarization rising toward the blue. We propose ASCA observations of three polarized X-ray weak Seyfert 1 galaxies which show little evidence for optical reddening. The anticipated heavily absorbed X-ray spectrum and large covering fraction will underline the disagreement between X-ray and optical absorption indicators and place the most stringent constraints on models to explain the
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| LAURA KAY | COLUMBIA UNIVERSITY | USA |
| DIRK GRUPE | MPE | GERMANY |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)MRK 376 | C | 108.5629 | 45.6989 | 40 ks | N | N | P | 0.03400 | 1 |