RXTE-PCA Observations of XMMU J054134.7-682550

Details RXTE-PCA Observations of XMMU J054134.7-682550 RXTE-PCA Observations of XMMU J054134.7-682550

2008-10-06

arxiv.org/abs/0810.0958v2

2009MNRAS.395.1662I

Astronomy and Astrophysics

Astrophysics

Published in MNRAS

Scientific paper

10.1111/j.1365-2966.2009.14659.x

We analyzed RXTE-PCA observations of a recent outburst of the X-ray pulsar XMMU J054134.7$-$682550. We calculated the pulse frequency history of the source. We found no sign of a binary companion. The source spins up when the X-ray flux is higher, with a correlation between the spin-up rate and X-ray flux, which may be interpreted as a sign of an accretion disk. On the other hand, the source was found to have an almost constant spin frequency when the X-ray flux is lower without any clear sign of a spin-down episode. The decrease in pulsed fraction with decreasing X-ray flux was intrepreted as a sign of accretion geometry change, but we did not find any evidence of a transition from accretor to propeller regimes. The source was found to have variable pulse profiles. Two peaks in pulse profiles were usually observed. We studied the X-ray spectral evolution of the source throughout the observation. Pulse phase resolved analysis does not provide any further evidence for a cyclotron line, but may suggest a slight variation of intensity and width of the 6.4 keV iron line with phase.

Affiliated with

Also associated with

No associations

Rating

RXTE-PCA Observations of XMMU J054134.7-682550 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 RXTE-PCA Observations of XMMU J054134.7-682550, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RXTE-PCA Observations of XMMU J054134.7-682550 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-205735