Cen x-3 as seen by MAXI during six years
\'A. Torregrosa, J. J. Rodes-Roca, J. M. Torrej\'on, G., Sanjurjo-Ferr\'in, G. Bernabeu

TL;DR
This study analyzes six years of MAXI/GSC X-ray observations of Cen X-3, examining its light curve, spectral properties, and orbital dynamics to understand accretion processes and stellar wind interactions.
Contribution
It provides detailed spectral and timing analysis of Cen X-3 over six years, identifying QPOs and modeling the emission with two spectral models, enhancing understanding of accretion and wind interactions.
Findings
Estimated orbital period and superorbital QPOs.
Spectral models fit well with partial absorption and power-law components.
High X-ray luminosity suggests accretion beyond stellar wind alone.
Abstract
The aim of this work is to study both light curve and orbital phase spectroscopy of this source taking advantage of the MAXI/GSC observation strategy. We have investigated the spectral and light curve properties of the X-ray emission from Cen X-3 along the binary orbit. These studies allow delimiting the stellar wind properties and its interactions with the compact object. A timing analysis of light curves in different energy bands was carried out. From the analysis of the light curve, we have estimated the orbital period of the binary system and also found possible QPOs around a superorbital period of days. Both orbital phase-averaged and phase-resolved spectra were extracted and analysed in the 2.0-20.0 keV energy range. We have defined and compared the high and low states spectra with the averaged spectrum. Two models have described spectra…
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Taxonomy
TopicsX-ray Spectroscopy and Fluorescence Analysis · High-pressure geophysics and materials · Atomic and Molecular Physics
