NICER Magnetar Burst Catalog
Astrophysical Journal, Supplement Series, cilt.284, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 284 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.3847/1538-4365/ae5655
- Dergi Adı: Astrophysical Journal, Supplement Series
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, Directory of Open Access Journals
- Anahtar Kelimeler: Catalogs (205), Magnetars (992), Neutron stars (1108), Soft gamma-ray repeaters (1471), X-ray bursts (1814), X-ray telescopes (1825), X-ray transient sources (1852)
- İstanbul Üniversitesi Adresli: Evet
Özet
In this paper, we present a comprehensive catalog of short bursts from magnetars based on 8 yr 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 mean of 317 ms, compared to a mean of 23 ms for bursts from other magnetars. Two microsecond-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.