The Radio Pulsar J0205+6449 in the Supernova Remnant 3C 58

Details The Radio Pulsar J0205+6449 in the Supernova Remnant 3C 58 The Radio Pulsar J0205+6449 in the Supernova Remnant 3C 58

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003arep...47..413m&link_type=abstract

Astronomy Reports, Volume 47, Issue 5, p.413-421

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The detection of pulsed radio emission from the recently discovered X-ray pulsar J0205+6449 in the young supernova remnant 3C 58 is reported together with the results of first studies of this emission. The observations were carried out at 111 and 88 MHz on radio telescopes of the Pushchino Observatory. The pulsar period, 65.68 ms, and period derivative, , have been confirmed. The integrated pulse profile at 111 MHz has been obtained and the flux density and spectral index α=2.8 measured. The pulsar dispersion measure DM=141 pc cm-3 has been confirmed. This dispersion measure yields a distance to the pulsar of d=6.4 kpc, a factor of two or more greater than the previously favored distance to the supernova remnant 3C 58 (2.6 kpc). The problem of the age and distance of the pulsar-SNR system is discussed. If the age of the pulsar J0205+6449 is equal to that of the SNR (820 years), this pulsar is the youngest known radio pulsar. The synchrotron mechanism for the radio and X-ray emission is proposed to explain the lower radio and X-ray luminosity of this new pulsar compared to the Crab pulsar, which is similar to it in many ways. Optical emission with luminosity L opt=1031 erg/s and gamma-ray emission with L γ=7×1035 erg/s are predicted, and the steep radio spectrum (α≈3) can be explained.

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