A transient variable 6 Hz QPO from GX 339-4

Details A transient variable 6 Hz QPO from GX 339-4 A transient variable 6 Hz QPO from GX 339-4

2003-09-16

arxiv.org/abs/astro-ph/0309437v2

Astron.Astrophys.412:235-240,2003

Astronomy and Astrophysics

Astrophysics

Author list corrected, small typos fixed

Scientific paper

10.1051/0004-6361:20031423

We report the results of an observation with the Rossi X-ray Timing Explorer of the black hole candidate GX 339-4 during its 2002/2003 outburst. This observation took place during a spectral transition from the hard to the soft state. A strong (6% rms) transient quasi-periodic oscillation (QPO) appears suddenly in the power density spectrum during this observation. The QPO centroid is ~6 Hz, but it varies significantly between 5 and 7 Hz with a characteristic time scale of ~10 seconds, correlated with the 2-30 keV count rate. The appearance of the QPO is related to spectral hardening of the flux, due to a change in the relative contribution of the soft and hard spectral components. We compare this peculiar behavior with results from other systems that show similar low frequency QPO peaks, and discuss the results in terms of possible theoretical models for QPO production.

Affiliated with

Also associated with

No associations

Rating

A transient variable 6 Hz QPO from GX 339-4 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 A transient variable 6 Hz QPO from GX 339-4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A transient variable 6 Hz QPO from GX 339-4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-690083