A merlin observation of PSR B1951+32 and its associated plerion

A. Golden, S. Bourke, G. Clyne, R. F. Butler, A. Shearer, T. W B Muxlow, W. F. Brisken

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In an investigative 16 hr L-band observation using the MERLIN radio interferometric array, we have resolved both the pulsar PSR B1951 +32 and the structure within the flat spectral radio continuum region, believed to be the synchrotron nebula associated with the interaction of the pulsar and its "host" supernova remnant CTB 80. The extended structure we see, significant at ∼4.5 σ, is of dimensions 2″.5 × 0″.75 and suggests a sharp bow-shaped arc of shocked emission, which is correlated with a similar structure observed in lower resolution radio maps and X-ray images. Using this MERLIN data as a new astrometric reference for other multiwavelength data, we can place the pulsar at one edge of the HST reported optical synchrotron knot, ruling out previously suggested optical counterparts and allowing an elementary analysis of the optical synchrotron emission that appears to trail the pulsar. The latter is possibly a consequence of pulsar wind replenishment, and we suggest that the knot is a result of magnetohydrodynamic (MHD) instabilities. These being so, it suggests a dynamical nature to the optical knot, which will require high-resolution optical observations to confirm.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume635
Issue number2 II
DOIs
StatePublished - Dec 20 2005
Externally publishedYes

Fingerprint

EH-101 helicopter
pulsars
radio
synchrotrons
magnetohydrodynamics
replenishment
ultrahigh frequencies
bows
supernova remnants
nebulae
arcs
continuums
high resolution

Keywords

  • ISM: individual (CTB 80)
  • Pulsars: individual (PSR B1951 + 32)
  • Radiation mechanisms: nonthermal
  • Stars: neutron
  • Supernova remnants

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Golden, A., Bourke, S., Clyne, G., Butler, R. F., Shearer, A., Muxlow, T. W. B., & Brisken, W. F. (2005). A merlin observation of PSR B1951+32 and its associated plerion. Astrophysical Journal, 635(2 II). https://doi.org/10.1086/499427

A merlin observation of PSR B1951+32 and its associated plerion. / Golden, A.; Bourke, S.; Clyne, G.; Butler, R. F.; Shearer, A.; Muxlow, T. W B; Brisken, W. F.

In: Astrophysical Journal, Vol. 635, No. 2 II, 20.12.2005.

Research output: Contribution to journalArticle

Golden, A, Bourke, S, Clyne, G, Butler, RF, Shearer, A, Muxlow, TWB & Brisken, WF 2005, 'A merlin observation of PSR B1951+32 and its associated plerion', Astrophysical Journal, vol. 635, no. 2 II. https://doi.org/10.1086/499427
Golden A, Bourke S, Clyne G, Butler RF, Shearer A, Muxlow TWB et al. A merlin observation of PSR B1951+32 and its associated plerion. Astrophysical Journal. 2005 Dec 20;635(2 II). https://doi.org/10.1086/499427
Golden, A. ; Bourke, S. ; Clyne, G. ; Butler, R. F. ; Shearer, A. ; Muxlow, T. W B ; Brisken, W. F. / A merlin observation of PSR B1951+32 and its associated plerion. In: Astrophysical Journal. 2005 ; Vol. 635, No. 2 II.
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