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X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213

X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213
X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213

PSR J2032+4127 is a young and rapidly rotating pulsar on a highly eccentric orbit around the high-mass Be star MT91 213. X-ray monitoring of the binary system over an ~4000 d period with Swift has revealed an increase of the X-ray luminosity which we attribute to the synchrotron emission of the shocked pulsar wind. We use Swift X-ray observations to infer a clumpy stellar wind with r-2 density profile and constrain the Lorentz factor of the pulsar wind to 105 < γw < 106.We investigate the effects of an axisymmetric stellar wind with polar gradient on the X-ray emission. Comparison of the X-ray light curve hundreds of days before and after the periastron can be used to explore the polar structure of the wind.

Pulsars: individual: PSR J2032+4127, Radiation mechanisms: non-thermal, Stars: massive, X-rays: binaries
1745-3925
L22-L26
Petropoulou, M.
2cb84a7f-68d6-4dda-bed1-d937f59682e8
Vasilopoulos, G.
425ac501-05b1-480f-8a67-efeace00094c
Christie, I.M.
dc0005ed-b508-45c7-a3b4-76accfa9a8d2
Giannios, D.
eae95536-762d-4d29-97c8-368499754876
Coe, M.J.
04dfb23b-1456-46a3-9242-5cee983471d5
Petropoulou, M.
2cb84a7f-68d6-4dda-bed1-d937f59682e8
Vasilopoulos, G.
425ac501-05b1-480f-8a67-efeace00094c
Christie, I.M.
dc0005ed-b508-45c7-a3b4-76accfa9a8d2
Giannios, D.
eae95536-762d-4d29-97c8-368499754876
Coe, M.J.
04dfb23b-1456-46a3-9242-5cee983471d5

Petropoulou, M., Vasilopoulos, G., Christie, I.M., Giannios, D. and Coe, M.J. (2018) X-ray mapping of the stellar wind in the binary PSR J2032+4127/MT91 213. Monthly Notices of the Royal Astronomical Society: Letters, 474 (1), L22-L26. (doi:10.1093/mnrasl/slx185).

Record type: Article

Abstract

PSR J2032+4127 is a young and rapidly rotating pulsar on a highly eccentric orbit around the high-mass Be star MT91 213. X-ray monitoring of the binary system over an ~4000 d period with Swift has revealed an increase of the X-ray luminosity which we attribute to the synchrotron emission of the shocked pulsar wind. We use Swift X-ray observations to infer a clumpy stellar wind with r-2 density profile and constrain the Lorentz factor of the pulsar wind to 105 < γw < 106.We investigate the effects of an axisymmetric stellar wind with polar gradient on the X-ray emission. Comparison of the X-ray light curve hundreds of days before and after the periastron can be used to explore the polar structure of the wind.

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More information

Accepted/In Press date: 15 November 2017
e-pub ahead of print date: 21 November 2017
Published date: 1 February 2018
Keywords: Pulsars: individual: PSR J2032+4127, Radiation mechanisms: non-thermal, Stars: massive, X-rays: binaries

Identifiers

Local EPrints ID: 418552
URI: http://eprints.soton.ac.uk/id/eprint/418552
ISSN: 1745-3925
PURE UUID: d98ed213-d0ce-42a7-b69c-6fac2f93860d
ORCID for M.J. Coe: ORCID iD orcid.org/0000-0002-0763-8547

Catalogue record

Date deposited: 12 Mar 2018 17:30
Last modified: 17 Dec 2019 02:04

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Contributors

Author: M. Petropoulou
Author: G. Vasilopoulos
Author: I.M. Christie
Author: D. Giannios
Author: M.J. Coe ORCID iD

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