A New Measurement of the Spin and Orbital Parameters of the High Mass X-ray Binary Centaurus X-3 using AstroSat
Abstract
We present the timing results of out-of-eclipse observations of Centaurus X-3 spanning half a binary orbit, performed on 12-13 December, 2016 with the Large Area X-ray Proportional Counter (LAXPC) on-board AstroSat. The pulse profile was confirmed to exhibit a prominent pulse peak with a secondary inter-pulse. The systemic spin period of the pulsar was found to be s in agreement with its spin up trend. The spin up timescale seems to have increased to yr that points to negative torque effects in the inner accretion disk. We also report the derived values of projected semi-major axis and orbital velocity of the neutron star.
Keywords
Cite
@article{arxiv.2103.07204,
title = {A New Measurement of the Spin and Orbital Parameters of the High Mass X-ray Binary Centaurus X-3 using AstroSat},
author = {Parisee Shirke and Suman Bala and Jayashree Roy and Dipankar Bhattacharya},
journal= {arXiv preprint arXiv:2103.07204},
year = {2024}
}
Comments
Accepted for publication in the Special Issue of Journal of Astrophysics and Astronomy on AstroSat: Five Years in Orbit, 7 pages, 6 figures