Prospects for observing the occultation of pulsars by Halley's comet

Details Prospects for observing the occultation of pulsars by Halley's comet Prospects for observing the occultation of pulsars by Halley's comet

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...154l..33s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 154, no. 1-2, Jan. 1986, p. L33, L34.

Astronomy and Astrophysics

Astrophysics

Halley'S Comet, Pulsars, Stellar Occultation, Comet Tails, Cometary Atmospheres, Electron Density (Concentration), Faraday Effect, Magnetic Field Configurations, Radio Wave Refraction

Scientific paper

Pulsars, as compact, highly polarized low frequency radio emitters, are good potential probes of cometary atmospheres. As with other continuum sources the refraction and Faraday rotation of their radio emission can be used to estimate electron densities and magnetic field strengths within an occulting comet. In addition, dispersion effects may be detectable in the pulsed emission, providing estimates of electron surface densities which require no additional assumptions. Twelve catalogued pulsars are good occultation candidates during the current apparition of P/Halley, in most cases by its tail, but for PSR 1641-45 and PSR 1609-47 (part of) the coma will also be involved. Estimates of the dates and times of conjunction and tail occultation are provided.

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