SUMMARY OF SEQUENCE NUMBER 400110
SUMMARY OF SEQUENCE NUMBER 400110
Title: CHANDRA ACIS/LETG OBSERVATIONS OF THE LEAST ABSORBED X-RAY NOVA: XTE J1118+48
Observer: GARCIA
Subject Category: BH and NS Binaries
Seq: 400110 ObsId: 01701
Long-term Plan bin: no LTS bin
ABSTRACT
SCIENCE RATIONALE We propose Chandra grating observations of the X-ray nova XTE J1118+48. The source was discovered in late March of this year by the All-Sky Monitor on RXTE (IAUC 7389) and it was identified optically shortly thereafter (IAUC 7390). This probable black-hole source has a unique and important characteristic: It is the only X-ray nova (XRN) located at high galactic latitude (b=+62 deg). Thus it has by far the lowest extinction of any XRN, making it an exciting target for grating studies with Chandra. The column density out of the plane in this direction is log(NH) = 20.1 (Dickey and Lockman 1990, A&AS 28, 215). At energies <1 keV very little is known about the properties of X-ray binaries--especially XRN--because nearly all sources lie at low galactic latitude and have high
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| XTE J1118+48 |
169.545000 | 48.036389 |
30.00000 |
ACIS-S |
LETG |
DDT |
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
