Detection of new optical counterpart candidates to PSR B1951+32 with HST/WFPC2

Ray F. Butler, A. Golden, A. Shearer

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


There remain several definitive γ-ray pulsars that are as yet undetected in the optical regime. A classic case is the pulsar PSR B 1951+32, associated with the complex CTB 80 SNR. Previous ground based high speed 2-d optical studies have ruled out candidates to mv ∼ 24. Hester (2000a) has reported an analysis of archival HST/WFPC2 observations of the CTB 80 complex which suggest a compact synchrotron nebula coincident with the pulsar's radio position. Performing a similar analysis, we have identified a possible optical counterpart within this synchrotron nebula at mv ∼ 25.5-26, and another optical counterpart candidate nearby at mv ∼ 24.5. We assess the reality of these counterpart candidates in the context of existing models of pulsar emission.

Original languageEnglish (US)
Pages (from-to)845-851
Number of pages7
JournalAstronomy and Astrophysics
Issue number3
StatePublished - Dec 2002
Externally publishedYes


  • ISM: individual objects: CTB 80
  • ISM: supernova remnants
  • Stars: pulsars: general
  • Stars: pulsars: individual: PSR B1951+32

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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