Open AccessVela‐size glitch rates in youthful pulsars
Author(s) -
Urama J. O.,
Okeke P. N.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02902.x
Subject(s) - pulsar , glitch , vela , physics , astrophysics , neutron star , x ray pulsar , astronomy , magnitude (astronomy) , detector , optics
A total of 71 glitches (Δ ν ν ≥10 ‐9 ) have been reported to date in 30 pulsars. 13 of these glitches come from the Vela pulsar, whose glitches are mostly of magnitude Δ ν ν ∼10 ‐6 . Only about 40 per cent of the total glitches are of this magnitude. While glitches of this size have been observed from pulsars aged 10 4 –10 7 yr, 80 per cent of them come from the youthful pulsars, aged 10 4 –10 5 yr. For pulsars older than 10 4 yr, the glitch activity is found to be proportional to the logarithm of the spin‐down rate, ν ˙. Based on this relationship, we identify six other pulsars that are most likely to yield frequent large glitches. Since these pulsars are of comparable ages to the Vela pulsar, real‐time glitch detection on them and studies of their subsequent recovery would play a vital role in improving understanding of the neutron star interior and the pulsar glitch mechanisms.