Constraining mechanism associated with fast radio burst and glitch from SGR J1935

Abstract

The discovery of fast radio burst (FRB) 200428 from galactic SGR J1935+2154 makes it possible to measure rotational changes accompanied by FRBs and to test several FRB models which may be simultaneously associated with glitches. Inspired by this idea, we present order of magnitude calculations to the scenarios proposed. FRB models such as global starquakes, crust fractures and collisions between pulsars and asteroids/comets are discussed. For each mechanism, the maximum glitch sizes are constrained by the isotropic energy release during the X-ray burst and/or the SGR J1935+2154-like radio burst rate. Brief calculations show that, the maximum glitch sizes for different mechanisms differ by order(s) of magnitude. If glitches are detected to be coincident with FRBs from galactic magnetars in the future, glitch behaviors (such as glitch size, rise timescale, the recovery coefficient and spin down rate offset) are promising to serve as criterions to distinguish glitch mechanisms and in turn to constrain FRB models.

13 pages, 1 figure, 3 tables. Accepted for publication in MNRAS

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Cited by in corpus (6)

• Repeating Fast Radio Bursts with High Burst Rates by Plate Collisions in Neutron Star Crusts
• Glitches due to (quasi) neutron-vortex scattering in the superfluid inner crust of a pulsar
• Tidal capture of an asteroid by a magnetar: FRB-like bursts, glitch and anti-glitch
• Multipolar Electromagnetic Emission of Newborn Magnetar
• Neutron star phase transition as the origin for the fast radio bursts and soft gamma-ray repeaters of SGR J1935+2154
• Optical Transients from Fast Radio Bursts Heating Companion Stars in Close Binary Systems