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30 GHz flux density measurements of the Caltech-Jodrell flat-spectrum sources with OCRA-p
S. R. Lowe, M. P. Gawroński, P. N. Wilkinson +5
To measure the 30-GHz flux densities of the 293 sources in the Caltech-Jodrell Bank flat-spectrum (CJF) sample. The measurements are part of an ongoing programme to measure the spe…
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…