SUMMARY OF SEQUENCE NUMBER 400068
SUMMARY OF SEQUENCE NUMBER 400068
Title: RESOLVING LOW ENERGY LINES FROM LMXRB
Observer: ANGELINI
Subject Category: BH and NS Binaries
Seq: 400068 ObsId: 00701
Long-term Plan bin: 18-Jul-2000
ABSTRACT
ASCA observations of the LMXRB X0918-54,X1543-62 and X0614+09 reveal strong emission lines in the 0.5-1 keV band.The emission is consistent with Oxygen and Iron L,but major uncertanties remain in establishing the line emission mechanism.The recombination continuum,a signature of photoinonization,is missing or at lower level in all systems. A collisionial plasma better reproduces the spectrum. Scattering and 3-body recombinations are other possible mechanism that can lower the recombination. Observations with the AXAF HETG of the 3 objects can differentiate line emission with an unprecedented resolving power.This capability will pin-down the underline mechanism responsible for the line emission, and define abundances to constrain the system evolution.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| X0918-54 |
140.111250 | -55.206389 |
30.00000 |
ACIS-S |
HETG |
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
