ASCA observations of the superluminal jet source GRO J1655-40

Details ASCA observations of the superluminal jet source GRO J1655-40 ASCA observations of the superluminal jet source GRO J1655-40

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..139y&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 139-142 (2000).

Computer Science

Black Holes, Accretion And Accretion Disks, X-Ray

Scientific paper

We report on the results of ASCA observation of the Galactic jet source GRO J1655-40 performed in 1997 Feb. Previous ASCA observations of GRO J1655-40 in 1994 and 1995 revealed the presence of Kα resonance absorption lines from highly ionized iron ions in the X-ray spectra [1]. The center energy of the absorption line varied in association with the change of X-ray intensity: it was that of Kα line of H-like irons and of He-like irons when the X-ray intensity was high (2.2 Crab) and low (0.27-0.57 Crab), respectively. These results suggest that the high temperature plasma producing the absorption lines is located in a non-spherical configuration and is photo-ionized by X-ray radiations. In order to investigate the geometry of the plasma in detail, we performed a long observation of this source from 1997 Feb. 26 to Feb. 28 to cover its full orbital period (2.6 days). The average X-ray intensity was 0.9 Crab and a blend of two absorption lines from H-like and He-like irons was detected. This is consistent with the photo-ionization scenario in relation to the previous observations. We found that the absorption line features exist over the full orbital phase. This fact indicates that the plasma responsible for line absorptions distributes symmetrically around the rotation axis of the accretion disk. .

Affiliated with

Also associated with

No associations

Rating

ASCA observations of the superluminal jet source GRO J1655-40 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with ASCA observations of the superluminal jet source GRO J1655-40, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA observations of the superluminal jet source GRO J1655-40 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-748582