Abstract Details
| Name: Jayashree Roy Affiliation: UM-DAE Center for Excellence in Basic Sciences, Mumbai Conference ID: ASI2017_727 Title : Temporal and Spectral study of 4U 1626-67 with LAXPC (ASTROSAT) Authors and Co-Authors : J.Roy, P. C. Agrawal, S.Pattnaik, M.Choudhury UM-DAE Center For Excellence in Basic Sciences, Mumbai Abstract Type : Oral Abstract Category : Stars,ISM and the Galaxy Abstract : Large Area X-ray Proportional Counter (LAXPC) onboard ASTROSAT satellite observed ~7.67 sec accretion powered pulsar 4U 1626-67 on three occasions, 13th January, 26th January and 26th August 2016. The pulsar is known to undergo torque reversal, last detected torque reversal is centered near MJD 54500 (2008 Feb 4), since then it shows a steady spin up state. We present detailed energy dependent timing analysis of this source and observed a spin up from the source. We report a mild detection of X-ray orbital periodicity from the source at ~2500 sec for the first time in using LAXPC data for the X-ray pulsar. Detailed spectral analysis showed the detection of a cyclotron line feature centered at ~37 keV. |