Spin-period variations in the intermediate polar RX J2133.7+5107
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arXiv
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| Format: | Preprint |
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2025
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| author | Breus, V. Andronov, I. L. Dubovsky, P. Kim, Y. Yoon, J. N. Petrik, K. |
| author_facet | Breus, V. Andronov, I. L. Dubovsky, P. Kim, Y. Yoon, J. N. Petrik, K. |
| contents | We report the results of long-term time series photometry on RX J2133.7+5107 (also known as 1RXS J213344.1+510725) obtained at several observatories. Using data taken during 17 years, we determined the current value of the spin period of $570.811470$ seconds with the formal accuracy of $0.000006$ seconds and a spin-up of the white dwarf with a characteristic time of $1.483(1)\times10^5$ years. This is even faster than that reported previously and, if confirmed, makes this object have one of the fastest spin-up timescales of all known intermediate polars. We derived an improved value of the superhump period of the system to be $0^d.280130(1)$. Superhump maxima timings are moving on the phase curve from season to season, showing non-monotonic changes, without a change in superhump period. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01940 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-period variations in the intermediate polar RX J2133.7+5107 Breus, V. Andronov, I. L. Dubovsky, P. Kim, Y. Yoon, J. N. Petrik, K. Solar and Stellar Astrophysics High Energy Astrophysical Phenomena We report the results of long-term time series photometry on RX J2133.7+5107 (also known as 1RXS J213344.1+510725) obtained at several observatories. Using data taken during 17 years, we determined the current value of the spin period of $570.811470$ seconds with the formal accuracy of $0.000006$ seconds and a spin-up of the white dwarf with a characteristic time of $1.483(1)\times10^5$ years. This is even faster than that reported previously and, if confirmed, makes this object have one of the fastest spin-up timescales of all known intermediate polars. We derived an improved value of the superhump period of the system to be $0^d.280130(1)$. Superhump maxima timings are moving on the phase curve from season to season, showing non-monotonic changes, without a change in superhump period. |
| title | Spin-period variations in the intermediate polar RX J2133.7+5107 |
| topic | Solar and Stellar Astrophysics High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2501.01940 |