SUMMARY OF SEQUENCE NUMBER 700139
SUMMARY OF SEQUENCE NUMBER 700139
Title: SOLVING THE PROBLEM OF THE CORE STRUCTURES AND SPECTRA OF NEARBY RADIO GALAXIES NGC 6251 AND NGC 4261
Observer: BIRKINSHAW
Subject Category: Active Galaxies and Quasars
Seq: 700139 ObsId: 00834
Long-term Plan bin: 30-Apr-2000
ABSTRACT
ROSAT PSPC and HRI observations of the low-power radio galaxies NGC~6251 (z=0.0234) and NGC~4261 (z=0.0089) have shown complicated X-ray structures and spectra. In both objects we find an extended atmosphere and a small-scale bright component associated with the active nucleus. However, the interpretation of this nuclear X-ray emission is complicated by the presence of multiple spectral components, and has remained ambiguous in the absence of X-ray data with good spatial and spectral resolution. Here we propose ACIS observations of these galaxies to determine the fraction of their core X-radiation which originates in non-thermal processes, and to study the gas components of the cores and envelopes. X-ray emission from the jets will also be detectable.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| NGC 4261 |
184.846667 | 5.824889 |
35.00000 |
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
