SUMMARY OF SEQUENCE NUMBER 400027
SUMMARY OF SEQUENCE NUMBER 400027
Title: ACIS-HETG OBSERVATIONS OF GRS1915+105: A MICRO BAL-QUASAR ?
Observer: LEE
Subject Category: BH and NS Binaries
Seq: 400027 ObsId: 00660
Long-term Plan bin: no LTS bin
ABSTRACT
Previous ASCA observations of the X-ray transient GRS1915+105 have revealed prominent absorption lines from highly ionized iron, possibly due to a photoionized wind from the putative black hole accretion disk. We propose to perform high resolution spectroscopy of the iron line complex via a 30ksec ACIS-S/HETG observation. The line of sight velocity and velocity dispersion of the absorbing matter will be accurately measured, and the P-Cygni profiles (confirming the presence of a wind) will be sought. By aligning the ACIS-S with the axis of the known jet, we will be sensitive to any multiple-arcminute scale structure in this jet. We also aim to propose for RXTE observations which will compliment this study by constraining the geometry/structure of the disk/corona system.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| GRS 1915+105 |
288.797500 | 10.945556 |
30.00000 |
ACIS-S |
HETG |
GO |
yes |
yes |
no |
no |
yes |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
