Extreme Ultraviolet Explorer observations of PSR B0656+14

Jerry Edelstein, Kwang Il Seon, Aaron Golden, Kyoung Wook Min

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The pulsar PSR B0656+14 has been observed at γ-ray, X-ray, EUV, and optical energies. These data are consistent with emission originating from a thermal stellar surface augmented by a hot, thermal "polar-cap" and an additional magnetospheric component. We have combined archival Extreme Ultraviolet Explorer (EUVE) and ROSAT data, together with recent analyses of optical photometry, to characterize the surface thermal emission from PSR B0656+14. Because of differences in the EUVE and ROSAT flux for E < 0.18 keV, our combined-data models require a softer surface thermal component at closer distance with a larger intervening column, compared to models using only X-ray data. For a 0.1-2.0 keV source consisting of a dominant soft thermal blackbody that is augmented by both a smaller hot blackbody and a power-law optical component, we derive the source properties at 90% confidence to be Tsoft = (4.7-5.5) × 105 K, an absorbing column density of NH = (1.45-1.65) × 1020 cm-2, a distance of d/R10 = 135-190 pc, and Thot = (1.13-1.18) × 106 K.

Original languageEnglish (US)
Pages (from-to)902-907
Number of pages6
JournalAstrophysical Journal
Volume539
Issue number2 PART 1
StatePublished - Aug 20 2000

Keywords

  • Stars: neutron
  • Ultraviolet: stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Edelstein, J., Seon, K. I., Golden, A., & Min, K. W. (2000). Extreme Ultraviolet Explorer observations of PSR B0656+14. Astrophysical Journal, 539(2 PART 1), 902-907.