Unveiling the super-orbital modulation of LSI +61 303 in X-rays
High Energy Astrophysical Phenomena
2015-06-11 v1 Solar and Stellar Astrophysics
Abstract
We found evidence for the super-orbital modulation in the X-ray emission of LS I +61 303 from the longest monitoring date by the RXTE. The time evolution of the modulated fraction in the orbital light curves can be well fitted with a sinusoidal function having a super-orbital period of 1667 days. However, we have found a 281.8+/-44.6 day shift between the super-orbital variability found at radio frequencies and our X-ray data. We also find a super-orbital modulation in the maximum count rate of the orbital light curves, compatible with the former results, including the shift.
Keywords
Cite
@article{arxiv.1210.6180,
title = {Unveiling the super-orbital modulation of LSI +61 303 in X-rays},
author = {Jian Li and Diego F. Torres and Shu Zhang and Daniela Hadasch and Nanda Rea and G. Andrea Caliandro and Yupeng Chen and Jianmin Wang},
journal= {arXiv preprint arXiv:1210.6180},
year = {2015}
}
Comments
2 pages; to appear in the Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez & S. N. Zhang (eds.)