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

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79 Scopus citations

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 (US)
Pages (from-to)	L89-L92
Journal	Astrophysical Journal
Volume	593
Issue number	2 II
DOIs	https://doi.org/10.1086/378184
State	Published - Aug 20 2003
Externally published	Yes

Keywords

Astrometry
Equation of state
Stars: neutron

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10.1086/378184

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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.",

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

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doi = "10.1086/378184",

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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

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U2 - 10.1086/378184

DO - 10.1086/378184

M3 - Article

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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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