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American Astronomical Society, Astrophysical Journal Letters, 1(744), p. L13, 2011

DOI: 10.1088/2041-8205/744/1/l13

Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S290(8), p. 255-256, 2012

DOI: 10.1017/s1743921312019886

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Unveiling the Super-Orbital Modulation of Ls I +61°303 in X-Rays

Journal article published in 2011 by Jian Li, Diego F. Torres ORCID, Shu Zhang, Daniela Hadasch, Nanda Rea ORCID, G. Andrea Caliandro, Yupeng Chen, Jianmin Wang
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractWe 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.

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