SUMMARY OF SEQUENCE NUMBER 900016
SUMMARY OF SEQUENCE NUMBER 900016
Title: IS THE 6.4 KEV ISLAND SGR B2 AN X-RAY REFLECTION NEBULA ?
Observer: MAEDA
Subject Category: Diffuse Emission and Surveys
Seq: 900016 ObsId: 00944
Long-term Plan bin: 26-Mar-2000
ABSTRACT
With ASCA we found an extremely bright 6.4-keV line emitting region at the molecular cloud Sgr B2: the 6.4-keV island. X-ray spectrum, and spatial extensions of the island are consistent with those expected by X-ray irradiation on Sgr B2 from an outside source, hence may be called an X-ray reflection nebula: a new category of X-ray sources. Limited spatial resolution of ASCA, however, prevents us quantitative study on this interesting object. With superior resolving power of AXAF, we propose to study details on it. Main objectives are, (1) make further confirmation that Sgr B2 X-rays are really due to reflection of other X-ray source (s) and make a realistic picture of the reflection, (2) search for star forming activity, and (3) give strong constraint on the irradiating X-ray source(s).
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| SGR B2 |
266.777900 | -28.446470 |
100.0000 |
ACIS-I |
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
