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arXiv · 2506.04371

Precise Timing Analysis of Four Magnetic Cataclysmic Variables with TESS

Srinivas M Rao·Jeewan C Pandey·Nikita Rawat·Arti Joshi·Ajay Kumar Singh
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Abstract

We analysed high time-resolution optical photometric data from the Transiting Exoplanet Survey Satellite (TESS) to study the timing behaviour of four intermediate polar-like objects, namely, V1460 Her, 1RXS J045707.4+452751, Swift J0958.0-4208, and V842 Cen. In the case of V1460 Her, we refined the measurement of its orbital period. Long-term observations suggest a gradual decrease in the orbital period of V1460 Her, and the stable light curve during the TESS observations indicates its quiescent state. We detected a beat period of 1290.6 $\pm$ 0.5 s for the first time for the source 1RXS J045707.4+452751, suggesting a possible disc-overflow accretion scenario. For the sources Swift J0958.0-4208 and V842 Cen, we determined periods 6.11 $\pm$ 0.02 h and 3.555 $\pm$ 0.005 h, respectively, which can be provisionally suggested to be orbital periods. These findings provide valuable insights into the accretion processes and long-term evolution of these intriguing binary systems.

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Srinivas M Rao, Jeewan C Pandey, Nikita Rawat, Arti Joshi, Ajay Kumar Singh. 2025-06-04. Precise Timing Analysis of Four Magnetic Cataclysmic Variables with TESS. https://arxiv.org/abs/2506.04371

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