Fast transition of type-B QPO in the black hole transient XTE J1817-330

Details Fast transition of type-B QPO in the black hole transient XTE J1817-330 Fast transition of type-B QPO in the black hole transient XTE J1817-330

2012-03-08

arxiv.org/abs/1203.1674v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 pages, 3 figures, Accepted in A&A

Scientific paper

The evolution of different types of quasi-periodic oscillations (QPOs) and the coupled radiative/physical changes in the accretion disk are still poorly understood. In a few black hole binaries it was found that fast evolution of QPOs is associated with spectral variations. Such studies in other black hole binaries are important to understand the QPO phenomenon. For the black hole transient XTE J1817-330, we study fast QPO transitions and accompanying spectral variations to investigate what causes the spectral variation during the QPO transition. Roy et al. (2011) found QPOs in ten RXTE observations of XTE J1817-330. We found that, among the ten observations, only one observation shows erratic dips in its X-ray light curve. The power density spectra and the corresponding energy spectra were extracted and analyzed for the dip and non-dip sections of the light curve. We found that type-B $\sim$6 Hz QPO changes into type-A QPO in a few tens of seconds along with a flux decrease. This transient evolution is accompanied with a significant spectral variation. We report a transient QPO feature and accompanying spectral variation in XTE J1817-330. Based on our findings, we discuss the origin of fast evolution of QPOs and spectral variations.

Affiliated with

Also associated with

No associations

Rating

Fast transition of type-B QPO in the black hole transient XTE J1817-330 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 Fast transition of type-B QPO in the black hole transient XTE J1817-330, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast transition of type-B QPO in the black hole transient XTE J1817-330 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-16668