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Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates

Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates
Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates
The timing properties of radio pulsars provide a unique probe of neutron star interiors. Recent observations have uncovered quasi-periodicities in the timing and pulse properties of some pulsars, a phenomenon that has often been attributed to free precession of the neutron star, with profound implications for the distribution of superfluidity and superconductivity in the star. We advance this programme by developing consistency relations between free precession and pulsars glitches, and show that there are difficulties in reconciling the two phenomena in some precession candidates. This indicates that either the precession model used here needs to be modified, or some other phenomenon is at work in producing the quasi-periodicities, or even that there is something missing in terms of our understanding of glitches.
astro-ph.HE
1079-7114
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160
Ashton, G.
805bcbfd-ae8a-46b2-8297-f3142c3d0e7e
Prix, R.
96ea3047-4071-44f4-9a9f-e9e331c61421
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160
Ashton, G.
805bcbfd-ae8a-46b2-8297-f3142c3d0e7e
Prix, R.
96ea3047-4071-44f4-9a9f-e9e331c61421

Jones, David, Ashton, G. and Prix, R. (2017) Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates. Physical Review Letters, 118 (26), [261101]. (doi:10.1103/PhysRevLett.118.261101).

Record type: Article

Abstract

The timing properties of radio pulsars provide a unique probe of neutron star interiors. Recent observations have uncovered quasi-periodicities in the timing and pulse properties of some pulsars, a phenomenon that has often been attributed to free precession of the neutron star, with profound implications for the distribution of superfluidity and superconductivity in the star. We advance this programme by developing consistency relations between free precession and pulsars glitches, and show that there are difficulties in reconciling the two phenomena in some precession candidates. This indicates that either the precession model used here needs to be modified, or some other phenomenon is at work in producing the quasi-periodicities, or even that there is something missing in terms of our understanding of glitches.

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1610.03509 - Accepted Manuscript
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More information

Accepted/In Press date: 3 May 2017
e-pub ahead of print date: 27 June 2017
Published date: 27 June 2017
Additional Information: 6 pages, updated following comments, accepted for publication in Phys. Rev. Lett
Keywords: astro-ph.HE
Organisations: Mathematical Sciences, Applied Mathematics

Identifiers

Local EPrints ID: 408119
URI: http://eprints.soton.ac.uk/id/eprint/408119
ISSN: 1079-7114
PURE UUID: 3dd593ad-cc02-4989-ba5f-c699581eb0d3
ORCID for David Jones: ORCID iD orcid.org/0000-0002-0117-7567

Catalogue record

Date deposited: 12 May 2017 04:03
Last modified: 27 Jan 2020 13:37

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