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We revisit the short-term post-glitch relaxation of the Vela 2000 glitch inthe simple two-component model of pulsar glitch by making use of the latestrealistic equations of states from the microscopic Brueckner and therelativistic Brueckner theories for neutron stars, which can reconcile with theavailable astrophysical constraints. We show that to fit both the glitch sizeand the post-glitch jumps in frequency derivatives approximately one minuteafter the glitch, the mass of the Vela pulsar is necessarily small, and theremay be demands for a stiff equation of state (which results in a typicalstellar radius larger than $\sim\negthickspace12.5\,\rm km$) and a strongsuppression of the pairing gap in the nuclear medium. We discuss theimplications of this result on the understanding of pulsar glitches.

astrophysical journal/the astrophysical journal

Revisiting the post-glitch relaxation of the 2000 Vela glitch with the  neutron star equation of states in the Brueckner and relativistic Brueckner  theories