Abstract Details
| Name: Prahlad Epili Affiliation: Physical Research Laboratory Conference ID: ASI2015_628 Title : Suzaku observations of KS 1947+300 during an X-ray outburst Authors and Co-Authors : Gaurava K. Jaisawal Sachindra Naik Affiliations: Astronomy & Astrophysics Division Physical Research Laboratory Ahmedabad-380009, India Abstract Type : Poster Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : We present the results obtained from the timing and spectral studies of the Be/X-ray binary pulsar KS 1947+300 during its 2013 October-November outburst. For the present study, we used data obtained from Suzaku observations of the pulsar at two epochs e.g. on 2013 October 22 and November 22. X-ray pulsations at ~18.81 s were clearly detected in the light curves of the pulsar upto as high as 100 keV. The pulse profiles of the pulsar was found to be single-peaked upto ~10 keV beyond which a sharp peak followed by a dip like feature appeared in the hard X-ray profiles. Pulse-phase averaged spectrum of the pulsar was found to be well described with two different continuum models such as (i) Negative and Positive power law with EXponential (NPEX) cut-off and (ii) high energy cutoff power law model. Additional spectral components such as blackbody and Gaussian function were required for soft X-ray excess and iron emission lines in the pulsar spectra. In the spectral fitting, we also detected earlier reported cyclotron resonance scattering feature at ~12 keV. Pulse-phase resolved spectroscopy was carried out to understand the changes in spectral properties of the pulsar at different pulse phases. The details of the results obtained will be presented in the meeting. |