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Recent Torque Reversal of 4U 1907+09
S. C. Inam, S. Sahiner, A. Baykal
We present timing and spectral analysis of RXTE-PCA observations of the accretion powered pulsar 4U 1907+09 between June 2007 and August 2008. 4U 1907+09 had been in a spin-down ep…
RXTE-PCA Observations of XMMU J054134.7-682550
S. C. Inam, L. J. Townsend, V. A. McBride +3
We analyzed RXTE-PCA observations of a recent outburst of the X-ray pulsar XMMU J054134.7682550. We calculated the pulse frequency history of the source. We found no sign of a b…
Evidence of a Change in the Long Term Spin-down Rate of the X-ray Pulsar 4U 1907+09
A. Baykal, S. C. Inam, E. Beklen
We analyzed RXTE archival observations of 4U 1907+09 between 17 February 1996 and 6 March 2002. The pulse timing analysis showed that the source stayed at almost {\bf{constant}} pe…
Recent Timing Studies on RXTE Observations of 4U 1538-52
A. Baykal, S. C. Inam, E. Beklen
The high mass X-ray binary pulsar 4U 1538-52 was observed between July 31 and August 7, 2003. Using these observations, we determined new orbital epochs for both circular and ellip…
X-ray outburst of 4U 0115+634 and ROTSE Observations of its Optical Counterpart V635 Cas
A. Baykal, U. Kiziloglu, N. Kiziloglu +2
ROTSE IIId (The Robotic Optical Transient Experiment) observations of X-ray binary system 4U 0115+634/V635 Cas obtained during 2004 June and 2005 January make possible, for the fir…
Dependences of the X-ray luminosity and pulsar wind nebula on different parameters of pulsars and the evolutionary effects
O. H. Guseinov, A. Ankay, S. O. Tagieva +1
Dependences of the X-ray luminosity (L) of single pulsars, due to ejection of relativistic particles, on electric field intensity, rate of rotational energy loss (Ė), magnetic…