The distance and radius of the neutron star PSR B0656+14

Walter F. Brisken; S. E. Thorsett; A. Golden; W. M. Goss

doi:10.1086/378184

The distance and radius of the neutron star PSR B0656+14

Walter F. Brisken
, S. E. Thorsett
, A. Golden
, W. M. Goss

Physics

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

86 Citations (Scopus)

Abstract

We present the result of astrometric observations of the radio pulsar PSR B0656+14, made using the Very Long Baseline Array. The parallax of the pulsar is π = 3.47 ± 0.36 milliarcsec, yielding a distance 288 _-27⁺³³ pc. This independent distance estimate has been used to constrain existing models of thermal X-ray emission from the neutron star's photosphere. Simple blackbody fits to the X-ray data formally yield a neutron star radius R_∞∼ 7-8.5 km. With more realistic fits to a magnetized hydrogen atmosphere, any radius between ∼13 and ∼20 km is allowed.

Original language	English
Pages (from-to)	L89-L92
Journal	Astrophysical Journal
Volume	593
Issue number	2 II
DOIs	https://doi.org/10.1086/378184
Publication status	Published - 20 Aug 2003

Keywords

Astrometry
Equation of state
Stars: neutron

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10.1086/378184

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title = "The distance and radius of the neutron star PSR B0656+14",

abstract = "We present the result of astrometric observations of the radio pulsar PSR B0656+14, made using the Very Long Baseline Array. The parallax of the pulsar is π = 3.47 ± 0.36 milliarcsec, yielding a distance 288 -27+33 pc. This independent distance estimate has been used to constrain existing models of thermal X-ray emission from the neutron star's photosphere. Simple blackbody fits to the X-ray data formally yield a neutron star radius R∞∼ 7-8.5 km. With more realistic fits to a magnetized hydrogen atmosphere, any radius between ∼13 and ∼20 km is allowed.",

keywords = "Astrometry, Equation of state, Stars: neutron",

author = "Brisken, \{Walter F.\} and Thorsett, \{S. E.\} and A. Golden and Goss, \{W. M.\}",

year = "2003",

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doi = "10.1086/378184",

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volume = "593",

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TY - JOUR

T1 - The distance and radius of the neutron star PSR B0656+14

AU - Brisken, Walter F.

AU - Thorsett, S. E.

AU - Golden, A.

AU - Goss, W. M.

PY - 2003/8/20

Y1 - 2003/8/20

N2 - We present the result of astrometric observations of the radio pulsar PSR B0656+14, made using the Very Long Baseline Array. The parallax of the pulsar is π = 3.47 ± 0.36 milliarcsec, yielding a distance 288 -27+33 pc. This independent distance estimate has been used to constrain existing models of thermal X-ray emission from the neutron star's photosphere. Simple blackbody fits to the X-ray data formally yield a neutron star radius R∞∼ 7-8.5 km. With more realistic fits to a magnetized hydrogen atmosphere, any radius between ∼13 and ∼20 km is allowed.

AB - We present the result of astrometric observations of the radio pulsar PSR B0656+14, made using the Very Long Baseline Array. The parallax of the pulsar is π = 3.47 ± 0.36 milliarcsec, yielding a distance 288 -27+33 pc. This independent distance estimate has been used to constrain existing models of thermal X-ray emission from the neutron star's photosphere. Simple blackbody fits to the X-ray data formally yield a neutron star radius R∞∼ 7-8.5 km. With more realistic fits to a magnetized hydrogen atmosphere, any radius between ∼13 and ∼20 km is allowed.

KW - Astrometry

KW - Equation of state

KW - Stars: neutron

UR - https://www.scopus.com/pages/publications/0242428191

U2 - 10.1086/378184

DO - 10.1086/378184

M3 - Article

SN - 0004-637X

VL - 593

SP - L89-L92

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

The distance and radius of the neutron star PSR B0656+14

Abstract

Keywords

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