Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..751r&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 751-755. NSERC-supported research.
Astronomy and Astrophysics
Astronomy
13
Pulsars, Radio Astronomy, Radio Sources (Astronomy), Supernova Remnants, Astronomical Maps, H Lines, Nonthermal Radiation
Scientific paper
The pulsar PSR 1930+22 has a spin-down age of only 40,000 yr, and has long been considered likely to have an associated radio-detectable supernova remnant (SNR). The authors report 408 and 1420 MHz synthesis observations which reveal a faint shell of nonthermal emission of diameter 1°.7, partly surrounding the position of the pulsar. This may be the expected SNR. The surface brightness-diameter distance of the SNR (4.5 kpc±30%) and the dispersion measure distance of the pulsar (6.6 kpc±30%) agree within the errors. An independent estimate (5.4 kpc±35%) of the SNR distance is provided by the detection of neutral hydrogen which appears to be associated with the SNR shell.
Routledge D.
Vaneldik J. F.
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