2021/11/24 by L. C. Strang, A. Melatos, Strang, L. C. +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #Pulsars and Gravitational Waves Research
paper · pdf · doi:10.48550/arxiv.2111.12844
openalex publication_date 2021/11/24 · openalex created_date 2021/12/06 · openalex updated_date 2026/07/28
Many short Gamma-Ray Bursts (sGRBs) have a prolonged plateau in the X-ray afterglow lasting up to tens of thousands of seconds. A central engine injecting energy into the remnant may fuel the plateau. A simple analytic model describing the interaction of the magnetized relativistic wind from a rapidly-rotating magnetar with the surrounding environment can reproduce X-ray plateaux and instantaneous spectra. The model is analogous to classic, well-established models of young supernova remnants and applies the underlying physics to sGRB remnants. The light curve and spectra produced by the model are compared to observations of GRB 130603B. The spectra are also used to estimate parameters of the magnetar including its poloidal field strength and angular frequency. If combined with a gravitational wave signal, this model could provide insight into multimessenger astronomy and neutron star physics.