Anti-glitches within the standard scenario of pulsar glitches

TL;DR

This paper proposes a toy model that explains anti-glitches in neutron stars within the standard pulsar glitch framework, addressing recent observations of sudden spin-down events in magnetars.

Contribution

It introduces a novel toy model that accounts for anti-glitches within the traditional pulsar glitch scenario, filling a gap in existing interpretations.

Findings

The model can produce anti-glitches under specific conditions.

It aligns with recent magnetar observations of rapid spin-down events.

Provides a theoretical basis for anti-glitches within standard pulsar physics.

Abstract

Recent observation of a sudden spin down, occurring on a timescale not exceeding two weeks, of the magnetar 1E2259+586 (see Archibald et al. 2013, where this event was dubbed an `anti-glitch') has not still received any interpretation in terms of the standard scenario of pulsar glitches proposed by Anderson and Itoh (1975). Motivated by this observation, here we present a toy model that allows, under certain conditions, for anti-glitches in neutron stars within the standard approach.