A 4.5 s Quasiperiodic Spectral Oscillation in GRB 230307A: Evidence for Free Precession of a Postmerger Magnetar?

Journal:

The Astrophysical Journal Letters

Published:

2026-05-27

DOI:

10.3847/2041-8213/ae6c1b

Affiliations:

7

Authors:

7

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Institutions	Authors	Share
State Key Laboratory of Particle Astrophysics, IHEP CAS, China	2.000000	0.29
Nanjing University (NJU), China	1.000000	0.14
MOE Key Laboratory of Modern Astronomy and Astrophysics, NJU, China	1.000000	0.14
Zhejiang University (ZJU), China	1.000000	0.14
University of Chinese Academy of Sciences (UCAS), China	1.000000	0.14
The University of Hong Kong (HKU), China	1.000000	0.14

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