SUMMARY OF SEQUENCE NUMBER 700122
SUMMARY OF SEQUENCE NUMBER 700122
Title: LIFTING THE SHROUD AROUND BROAD ABSORPTION LINE QSOS: AN AXAF SURVEY
Observer: GREEN
Subject Category: Active Galaxies and Quasars
Seq: 700122 ObsId: 00817
Long-term Plan bin: 26-Dec-1999
ABSTRACT
We propose a short-exposure AXAF survey of a sample of 16 bright Broad Absorption Line (BAL) QSOs. BALs are caused by outflows from the nucleus with velocities reaching 0.2c. Recent ROSAT studies imply that the soft X-ray continuum of BALQSOs is either a) strongly absorbed by highly ionized material, or b) intrinsically underluminous. Since about 10% of QSOs show BALs, the former interpretation supports the hypothesis that most or possibly all QSOs contain BAL-type outflows, with a 10% covering factor. BALQSOs may thus provide a unique probe of cloud conditions near the nucleus of most QSOs. The latter alternative means that BALQSOs are an intrinsically different type of quasar. We propose to settle this question finally, with a judicious application of AXAF's unique capabilities.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| FIRST J0840+3633 |
130.185000 | 36.557556 |
5.000000 |
ACIS-S |
NONE |
GO |
no |
no |
no |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
