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A sudden dramatic change and recovery of magneto-environment of a repeating fast radio burst

Fuente: arXiv

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Auteurs principaux:	Li, Y., Zhang, S. B., Yang, Y. P., Tsai, C. W., Yang, X., Law, C. J., Anna-Thomas, R., Chen, X. L., Lee, K. J., Tang, Z. F., Xiao, D., Xu, H., Yang, X. L., Chen, G., Feng, Y., Li, D. Z., Mckinven, R., Niu, J. R., Shin, K., Wang, B. J., Zhang, C. F., Zhang, Y. K., Zhou, D. J., Zhu, Y. H., Dai, Z. G., Chang, C. M., Geng, J. J., Han, J. L., Hu, L., Li, D., Luo, R., Niu, C. H., Shi, D. D., Sun, T. R., Wu, X. F., Zhu, W. W., Jiang, P., Zhang, B.
Format:	Preprint
Publié:	2025
Sujets:	High Energy Astrophysical Phenomena Astrophysics of Galaxies Solar and Stellar Astrophysics
Accès en ligne:	Acceder al recurso
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_version_	1866918306456272896
author	Li, Y. Zhang, S. B. Yang, Y. P. Tsai, C. W. Yang, X. Law, C. J. Anna-Thomas, R. Chen, X. L. Lee, K. J. Tang, Z. F. Xiao, D. Xu, H. Yang, X. L. Chen, G. Feng, Y. Li, D. Z. Mckinven, R. Niu, J. R. Shin, K. Wang, B. J. Zhang, C. F. Zhang, Y. K. Zhou, D. J. Zhu, Y. H. Dai, Z. G. Chang, C. M. Geng, J. J. Han, J. L. Hu, L. Li, D. Luo, R. Niu, C. H. Shi, D. D. Sun, T. R. Wu, X. F. Zhu, W. W. Jiang, P. Zhang, B.
author_facet	Li, Y. Zhang, S. B. Yang, Y. P. Tsai, C. W. Yang, X. Law, C. J. Anna-Thomas, R. Chen, X. L. Lee, K. J. Tang, Z. F. Xiao, D. Xu, H. Yang, X. L. Chen, G. Feng, Y. Li, D. Z. Mckinven, R. Niu, J. R. Shin, K. Wang, B. J. Zhang, C. F. Zhang, Y. K. Zhou, D. J. Zhu, Y. H. Dai, Z. G. Chang, C. M. Geng, J. J. Han, J. L. Hu, L. Li, D. Luo, R. Niu, C. H. Shi, D. D. Sun, T. R. Wu, X. F. Zhu, W. W. Jiang, P. Zhang, B.
contents	Fast radio bursts (FRBs) are millisecond-duration radio bursts with unidentified extra-galactic origin. Some FRBs exhibit mild magneto-ionic environmental variations, possibly attributed to plasma turbulence or binary configuration. We report an abrupt magneto-ionic variation of FRB 20220529, a repeating FRB from a disk galaxy at redshift $0.1839 \pm 0.0001$. Initially, the Faraday rotation measure (RM) had a median of $17~{\rm rad~m^{-2}}$ and a scatter of $101~{\rm rad~m^{-2}}$ over 17 months. In December 2023, it jumped to $1977 \pm 84~{\rm rad~m^{-2}}$, and returned to typical values within two weeks. This drastic RM variation suggests that a dense magnetized clump enters and exits the line of sight in week timescales. One plausible scenario invokes a coronal mass ejection from a companion star, while other scenarios invoking extreme turbulence or binary orbital motion are also possible.
format	Preprint
id	arxiv_https___arxiv_org_abs_2503_04727
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	A sudden dramatic change and recovery of magneto-environment of a repeating fast radio burst Li, Y. Zhang, S. B. Yang, Y. P. Tsai, C. W. Yang, X. Law, C. J. Anna-Thomas, R. Chen, X. L. Lee, K. J. Tang, Z. F. Xiao, D. Xu, H. Yang, X. L. Chen, G. Feng, Y. Li, D. Z. Mckinven, R. Niu, J. R. Shin, K. Wang, B. J. Zhang, C. F. Zhang, Y. K. Zhou, D. J. Zhu, Y. H. Dai, Z. G. Chang, C. M. Geng, J. J. Han, J. L. Hu, L. Li, D. Luo, R. Niu, C. H. Shi, D. D. Sun, T. R. Wu, X. F. Zhu, W. W. Jiang, P. Zhang, B. High Energy Astrophysical Phenomena Astrophysics of Galaxies Solar and Stellar Astrophysics Fast radio bursts (FRBs) are millisecond-duration radio bursts with unidentified extra-galactic origin. Some FRBs exhibit mild magneto-ionic environmental variations, possibly attributed to plasma turbulence or binary configuration. We report an abrupt magneto-ionic variation of FRB 20220529, a repeating FRB from a disk galaxy at redshift $0.1839 \pm 0.0001$. Initially, the Faraday rotation measure (RM) had a median of $17~{\rm rad~m^{-2}}$ and a scatter of $101~{\rm rad~m^{-2}}$ over 17 months. In December 2023, it jumped to $1977 \pm 84~{\rm rad~m^{-2}}$, and returned to typical values within two weeks. This drastic RM variation suggests that a dense magnetized clump enters and exits the line of sight in week timescales. One plausible scenario invokes a coronal mass ejection from a companion star, while other scenarios invoking extreme turbulence or binary orbital motion are also possible.
title	A sudden dramatic change and recovery of magneto-environment of a repeating fast radio burst
topic	High Energy Astrophysical Phenomena Astrophysics of Galaxies Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2503.04727