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The Galactic neutron star population – I. An extragalactic view of the Milky Way and the implications for fast radio bursts

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Chrimes, A. A., Levan, Andrew J., Groot, P. J., Lyman, J. D. and Nelemans, G. (2021) The Galactic neutron star population – I. An extragalactic view of the Milky Way and the implications for fast radio bursts. Monthly Notices of the Royal Astronomical Society, 508 (2). pp. 1929-1946. doi:10.1093/mnras/stab2676 ISSN 1745-3933.

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Official URL: https://doi.org/10.1093/mnras/stab2676

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Abstract

A key tool astronomers have to investigate the nature of extragalactic transients is their position on their host galaxies. Galactocentric offsets, enclosed fluxes, and the fraction of light statistic are widely used at different wavelengths to help infer the nature of transient progenitors. Motivated by the proposed link between magnetars and fast radio bursts (FRBs), we create a face-on image of the Milky Way using best estimates of its size, structure, and colour. We place Galactic magnetars, pulsars, low-mass, and high-mass X-ray binaries on this image, using the available distance information. Galactocentric offsets, enclosed fluxes, and fraction of light distributions for these systems are compared to extragalactic transient samples. We find that FRBs follow the distributions for Galactic neutron stars closest, with 24 (75 per cent) of the Anderson–Darling tests we perform having a p-value greater than 0.05. This suggests that FRBs are located on their hosts in a manner consistent with Galactic neutron stars on the Milky Way’s light, although we cannot determine which specific neutron star population is the best match. The Galactic distributions are consistent with other extragalactic transients much less often across the range of comparisons made, with type Ia SNe in second place, at only 33 per cent of tests exceeding 0.05. Overall, our results provide further support for FRB models invoking isolated young neutron stars, or binaries containing a neutron star.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Magnetars , Neutron stars, Supernovae, X-ray sources, Galactic, X-ray bursts , Solar radio emission
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 1745-3933
Official Date: December 2021
Dates:
DateEvent
December 2021Published
21 September 2021Available
15 September 2021Accepted
Volume: 508
Number: 2
Page Range: pp. 1929-1946
DOI: 10.1093/mnras/stab2676
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society All rights reserved.
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 24 November 2021
Date of first compliant Open Access: 25 November 2021
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
725246Seventh Framework Programmehttp://dx.doi.org/10.13039/100011102
(MR/T020784/1UK Research and Innovationhttp://dx.doi.org/10.13039/100014013

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