SUMMARY OF PROPOSAL 63017
MPI F\"UR EXTRATERRESTRISCHE PHYSIK
GIESSENBACHSTRASSE
GARCHING
GERMANY 85740
Tel: 0049 89 3299 3877 Fax: 0049 89 3299 3569
Medium: 4GBDAT
Subject: AGN
THE NATURE OF X-RAY QUIET QUASARS
ABSTRACT
In a recent compilation of ROSAT detected radio-quiet quasars a small group of six nearby objects was found showing extremely low X-ray luminosities (by a factor of $\sim$ 30) compared to the bulk of other quasars at similar optical luminosities. \hfill \break We propose to observe the most interesting of these objects, PG 0844+349, which showed, as the only object of this sample, in ROSAT observations time variability by a factor of six, for 60 ks with ASCA. Although the object has been studied extensively at longer wavelengths its X-ray properties are poorly known. The broad band ASCA spectrum and the temporal behavior of its X-ray emission promise to yield valuable information on the physical nature of this unusual, possibly rare class of objects.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MASARU MATSUOKA | RIKEN | JAPAN |
| JOACHIM SIEBERT | MPE | GERMANY |
| WEYMIN YUAN | MPE | GERMANY |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)PG 0844+349 | 1 | 131.9267 | 34.7514 | 60 ks | N | Y | P | 0.02900 | 1 |