Timing and scintillation observations of the fast pulsar in CTB80

Details Timing and scintillation observations of the fast pulsar in CTB80 Timing and scintillation observations of the fast pulsar in CTB80

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.331...53f&link_type=abstract

Nature (ISSN 0028-0836), vol. 331, Jan. 7, 1988, p. 53, 54.

Astronomy and Astrophysics

Astrophysics

29

Pulsars, Scintillation, Stellar Magnetic Fields, Astronomical Models, Magnetic Dipoles, Neutron Stars, Stellar Evolution, Supernova Remnants

Scientific paper

Timing measurements of the period and dispersion measure of the newly discovered 39.5-ms pulsar in the SNR CTB80 were performed to determine the period derivative and scintillation parameters. Data acquired over a time span of 11 days yielded a surprisingly small period derivative of (5.92 + or - 0.06) x 10 to the 15th s/s. If the pulsar slows by magnetic dipole radiation, this spin-down rate implies a surface field strength of only 5 x 10 to the 11th Gauss, yet the pulsar is believed to be much too young for its magnetic field to have decayed. Scintillation observations reveal unusually rapid fluctuations, indicating a large pulsar transverse velocity. The timing and scintillation measurements and their results are described, and some astrophysical consequences are briefly explored.

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