Multiwavelength afterglow emission from bursts associated with magnetar flares and fast radio bursts

Yujia Wei, B. Theodore Zhang, Kohta Murase

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Magnetars have been considered as progenitors of magnetar giant flares (MGFs) and fast radio bursts (FRBs). We present detailed studies on afterglow emissions caused by bursts that occur in their wind nebulae and surrounding baryonic ejecta. In particular, following the bursts-in-bubble model, we analytically and numerically calculate spectra and light curves of such afterglow emission. We scan parameter space for the detectability of radio signals, and find that a burst with ∼1045 erg is detectable with the Very Large Array or other next-generation radio facilities. The detection of multiwavelength afterglow emission from MGFs and/or FRBs is of great significance for their localization and revealing their progenitors, and we estimate the number of detectable afterglow events.

Original languageEnglish (US)
Pages (from-to)6004-6014
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
StatePublished - Oct 2023

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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