Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2

Accretion Disks, Infrared: Stars, Stars: Binaries, Stars: Individual (Grs 1915+105)

Scientific paper

We present detailed, long term near-infrared (NIR) light curves of GRS 1915+105 obtained in 2007--2008, covering its long ``soft state'' for the first time. From our NIR monitoring and X-ray data of the All Sky Monitor onboard Rossi X-ray Timing Explorer, we discovered that the NIR flux dropped by >1 mag during short X-ray flares with a time-scale of days. Upon termination of the soft state, the H - Ks color reddened and the anti-correlation pattern was broken. The observed H - Ks color variation suggests that the dominant NIR source was an accretion disk during the soft state. The short X-ray flares during the soft state were associated with spectral hardening in X-rays and increasing radio emission, indicating jet ejection. The temporal NIR fading during the X-ray flares thus implies a sudden decrease in the contribution of the accretion disk when a jet is ejected.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State 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 Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1644189

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.