Abstract Details
| Name: Sachindra Naik Affiliation: Physical Research Laboratory Conference ID: ASI2015_394 Title : Be/X-ray Binary Pulsar EXO 2030+375 with Suzaku Authors and Co-Authors : Gaurava K. Jaisawal Physical Research Laboratory Abstract Type : Poster Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : Timing and spectral studies of Be/X-ray binary pulsar EXO 2030+375 were carried out during two Type I outbursts of different intensity. The observations were made with the X-ray observatory Suzaku at the peak of both the outbursts. Pulsations were clearly detected in the X-ray light curves of the pulsar. The pulse profiles were found to be peculiar. During 2007 May outburst, a series of absorption dips were seen in the pulse profiles. However, during 2012 May outburst, the observed single-peaked narrow profile at soft X-rays (0.5-10 keV range) changed to a double-peaked broad profile in 12-55 keV energy range and again reverted back to a smooth single-peaked profile at hard X-rays (55-70 keV range). The 1.0-100.0 keV broad-band spectrum of the pulsar was found to be well described by three continuum models such as (i) a partial covering high energy cut-off power-law model, (ii) a partially absorbed power-law with high-energy exponential rolloff and (iii) a partial covering Negative and Positive power law with EXponential (NPEX) continuum model. During the 2007 May outburst, several low energy emission lines were detected in the spectrum whereas during 2012 May observation, a weak and narrow Iron emission line at 6.4 keV was only present in the pulsar spectrum. The details of the results obtained will be presented. |