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A NICER view of PSR J0030+0451: Evidence for a global-scale multipolar magnetic field

A NICER view of PSR J0030+0451: Evidence for a global-scale multipolar magnetic field
A NICER view of PSR J0030+0451: Evidence for a global-scale multipolar magnetic field
Recent modeling of Neutron Star Interior Composition Explorer observations of thermal X-ray pulsations from the surface of the isolated millisecond pulsar PSR J0030+0451 suggests that the hot emitting regions on the pulsar's surface are far from antipodal, which is at odds with the classical assumption that the magnetic field in the pulsar magnetosphere is predominantly that of a centered dipole. Here, we review these results and examine previous attempts to constrain the magnetospheric configuration of PSR J0030+0451. To the best of our knowledge, there is in fact no direct observational evidence that PSR J0030+0451's magnetic field is a centered dipole. Developing models of physically motivated, non-canonical magnetic field configurations and the currents that they can support poses a challenging task. However, such models may have profound implications for many aspects of pulsar research, including pulsar braking, estimates of birth velocities, and interpretations of multi-wavelength magnetospheric emission.
2041-8205
Bilous, A. V.
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Watts, Anna L.
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Harding, Alice K.
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Riley, Thomas E.
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Arzoumanian, Zaven
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Bogdanov, Slavko
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Gendreau, Keith C.
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Ray, Paul S.
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Guillot, Sebastien
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Ho, Wynn C.G.
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Chakrabarty, Deepto
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Bilous, A. V.
b75aab9c-6317-4bfc-89fd-33d9ce729404
Watts, Anna L.
8c906b14-9fb9-4f04-9cb3-2aabd6561162
Harding, Alice K.
8343154a-9dbd-4454-ae91-feca27dff912
Riley, Thomas E.
fb72d2bc-54e5-4cbd-a3ee-93b0954e8ad3
Arzoumanian, Zaven
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Bogdanov, Slavko
39f20582-4d71-4b1a-ae2a-b266367341ef
Gendreau, Keith C.
cad26609-b22d-4c1d-ada3-4af51e2cd780
Ray, Paul S.
773c1940-2b53-4871-8176-c363521bb83f
Guillot, Sebastien
26b90302-d8b3-4b06-9254-d3327cac3ccc
Ho, Wynn C.G.
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Chakrabarty, Deepto
322198a5-4c3a-4369-99ee-b66befa6a518

Bilous, A. V., Watts, Anna L., Harding, Alice K., Riley, Thomas E., Arzoumanian, Zaven, Bogdanov, Slavko, Gendreau, Keith C., Ray, Paul S., Guillot, Sebastien, Ho, Wynn C.G. and Chakrabarty, Deepto (2019) A NICER view of PSR J0030+0451: Evidence for a global-scale multipolar magnetic field. Astrophysical Journal Letters, 887 (1), [L23]. (doi:10.3847/2041-8213/ab53e7).

Record type: Article

Abstract

Recent modeling of Neutron Star Interior Composition Explorer observations of thermal X-ray pulsations from the surface of the isolated millisecond pulsar PSR J0030+0451 suggests that the hot emitting regions on the pulsar's surface are far from antipodal, which is at odds with the classical assumption that the magnetic field in the pulsar magnetosphere is predominantly that of a centered dipole. Here, we review these results and examine previous attempts to constrain the magnetospheric configuration of PSR J0030+0451. To the best of our knowledge, there is in fact no direct observational evidence that PSR J0030+0451's magnetic field is a centered dipole. Developing models of physically motivated, non-canonical magnetic field configurations and the currents that they can support poses a challenging task. However, such models may have profound implications for many aspects of pulsar research, including pulsar braking, estimates of birth velocities, and interpretations of multi-wavelength magnetospheric emission.

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1912.05704 - Accepted Manuscript
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Accepted/In Press date: 4 November 2019
Published date: 12 December 2019

Identifiers

Local EPrints ID: 436751
URI: http://eprints.soton.ac.uk/id/eprint/436751
ISSN: 2041-8205
PURE UUID: 2a60877b-e67e-4198-87a9-d62bd8b9bc9d
ORCID for Wynn C.G. Ho: ORCID iD orcid.org/0000-0002-6089-6836

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Date deposited: 03 Jan 2020 17:30
Last modified: 27 Jan 2020 13:43

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