NICER Magnetar Burst Catalog
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866910064487432192 |
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| author | Chu, Che-Yen Hu, Chin-Ping Enoto, Teruaki Younes, George A. Sanna, Andrea Guillot, Sebastien Stewart, Rachael Arzoumanian, Zaven Baring, Matthew G. Bause, Marlon L. Güver, Tolga Ho, Wynn C. G. Kouveliotou, Chryssa Van Kooten, Alex Wadiasingh, Zorawar Gendreau, Keith C. |
| author_facet | Chu, Che-Yen Hu, Chin-Ping Enoto, Teruaki Younes, George A. Sanna, Andrea Guillot, Sebastien Stewart, Rachael Arzoumanian, Zaven Baring, Matthew G. Bause, Marlon L. Güver, Tolga Ho, Wynn C. G. Kouveliotou, Chryssa Van Kooten, Alex Wadiasingh, Zorawar Gendreau, Keith C. |
| contents | In this paper, we present a comprehensive catalog of short bursts from magnetars based on eight years of NICER observations. A total of 1130 bursts were identified from 14 sources, with the sample dominated by SGR 1935+2154, which accounts for 76% of all detected bursts. We analyzed burst durations, spectral properties, and their correlations across multiple sources. Bursts from SGR 1935+2154 exhibit significantly longer durations, with a distribution peak at 316 ms, compared to a peak of 23 ms for bursts from other magnetars. Two μs-scale bursts were detected for the first time, originating from 1E 1048.1-5937 and CXOU J010043.1-721134. Spectral analysis in the 0.5-8 keV range using both blackbody and power-law models shows that bursts with higher fluences have harder spectra. In contrast, correlations between burst duration and spectral parameters are weak or absent. This catalog provides a valuable dataset for studying magnetar short bursts, enabling future modeling efforts and improving our understanding of the diversity and physical mechanisms of magnetar bursts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_12291 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NICER Magnetar Burst Catalog Chu, Che-Yen Hu, Chin-Ping Enoto, Teruaki Younes, George A. Sanna, Andrea Guillot, Sebastien Stewart, Rachael Arzoumanian, Zaven Baring, Matthew G. Bause, Marlon L. Güver, Tolga Ho, Wynn C. G. Kouveliotou, Chryssa Van Kooten, Alex Wadiasingh, Zorawar Gendreau, Keith C. High Energy Astrophysical Phenomena In this paper, we present a comprehensive catalog of short bursts from magnetars based on eight years of NICER observations. A total of 1130 bursts were identified from 14 sources, with the sample dominated by SGR 1935+2154, which accounts for 76% of all detected bursts. We analyzed burst durations, spectral properties, and their correlations across multiple sources. Bursts from SGR 1935+2154 exhibit significantly longer durations, with a distribution peak at 316 ms, compared to a peak of 23 ms for bursts from other magnetars. Two μs-scale bursts were detected for the first time, originating from 1E 1048.1-5937 and CXOU J010043.1-721134. Spectral analysis in the 0.5-8 keV range using both blackbody and power-law models shows that bursts with higher fluences have harder spectra. In contrast, correlations between burst duration and spectral parameters are weak or absent. This catalog provides a valuable dataset for studying magnetar short bursts, enabling future modeling efforts and improving our understanding of the diversity and physical mechanisms of magnetar bursts. |
| title | NICER Magnetar Burst Catalog |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2512.12291 |