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Summer Research Fellowship Programme of India's Science Academies

X-Ray Data Analysis of Cen X-3

Gouri Anil

Mar Athanasius College, M P Varghese Road, Kothamangalam College P.O, Kothamangalam, Kerala 686666

Prof Varun Bhalerao

Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076

Abstract

         X-Ray binaries are a class of binary stars that emit X-Rays. X-Ray binary system consists of a normal star and a collapsed star (a neutron star or a black hole). X-Ray binaries which show strict periodic variations in intensity are termed as X-Ray pulsars. Centaurus X-3 or Cen X-3 is a pulsar, which is the compact component of a High Mass X-Ray binary. This X-Ray binary system consists of a supergiant of type O and a neutron star, which orbits it. X-Ray pulsars have neutron stars with strong magnetic fields which accretes material from a companion star. Cen X-3 has a pulse period of 4.8 seconds and 2.09 day orbit. The study of the X-Rays emitted by Cen X-3 in an energy range of 0.3-200 keV with the help of three AstroSat instruments, Soft X-Ray telescope,Large Area X-Ray Proportional Counter and Cadmium Zinc Telluride Imager, will help us understand the X-Ray pulsar's nature. Spectral and Timing analysis of the source is done to verify existing information on the source and to study the source at a better resolution. The project involves literature review of existing papers and analysis of the data obtained from AstroSat. The spectral analysis of the source helped verify the models previously used on the source and the timing analysis using efsearch and efold helped verify the periodicity of the source.

Keywords: Stars: neutron, X-Ray analysis

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