SIMBAD references

2018ApJ...866..154G - Astrophys. J., 866, 154-154 (2018/October-3)

The first glitch in a central compact object pulsar: 1E 1207.4-5209.

GOTTHELF E.V. and HALPERN J.P.

Abstract (from CDS):

Since its discovery as a pulsar in 2000, the central compact object (CCO) 1E 1207.4-5209 in the supernova remnant PKS 1209-51/52 had been a stable 0.424 s rotator with an extremely small spin-down rate and weak (Bs~9×1010 G) surface dipole magnetic field. In 2016 we observed a glitch from 1E 1207.4-5209 of at least Δf/f=(2.8±0.4)×10–9, which is typical in size for the general pulsar population. However, glitch activity is closely correlated with spin-down rate {dot}f, and pulsars with {dot}f as small as that of 1E 1207.4-5209 are never seen to glitch. Unlike in glitches of ordinary pulsars, there may have been a large increase in {dot}f as well. The thermal X-ray spectrum of 1E 1207.4-5209, with its unique cyclotron absorption lines that measure the surface magnetic field strength, did not show any measurable change after the glitch, which rules out a major disruption in the dipole field as a cause or result of the glitch. A leading theory of the origin and evolution of CCOs, involving the prompt burial of the magnetic field by the fallback of supernova ejecta, might hold the explanation for the glitch.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): pulsars: individual: 1E 1207.4-5209 - stars: neutron

Simbad objects: 11

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2019.09.23-05:51:31

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