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

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

Research output: Contribution to journalArticle

61 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 languageEnglish (US)
JournalAstrophysical Journal
Volume593
Issue number2 II
DOIs
StatePublished - Aug 20 2003
Externally publishedYes

Fingerprint

pulsars
neutron stars
Very Long Baseline Array (VLBA)
radii
parallax
photosphere
x rays
hydrogen
radio
atmospheres
atmosphere
estimates

Keywords

  • Astrometry
  • Equation of state
  • Stars: neutron

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Brisken, W. F., Thorsett, S. E., Golden, A., & Goss, W. M. (2003). The distance and radius of the neutron star PSR B0656+14. Astrophysical Journal, 593(2 II). https://doi.org/10.1086/378184

The distance and radius of the neutron star PSR B0656+14. / Brisken, Walter F.; Thorsett, S. E.; Golden, A.; Goss, W. M.

In: Astrophysical Journal, Vol. 593, No. 2 II, 20.08.2003.

Research output: Contribution to journalArticle

Brisken, WF, Thorsett, SE, Golden, A & Goss, WM 2003, 'The distance and radius of the neutron star PSR B0656+14', Astrophysical Journal, vol. 593, no. 2 II. https://doi.org/10.1086/378184
Brisken, Walter F. ; Thorsett, S. E. ; Golden, A. ; Goss, W. M. / The distance and radius of the neutron star PSR B0656+14. In: Astrophysical Journal. 2003 ; Vol. 593, No. 2 II.
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