The 1.5‐Millisecond Pulsar

  title={The 1.5‐Millisecond Pulsar},
  author={Donald Charles Backer},
  journal={Annals of the New York Academy of Sciences},
  • D. Backer
  • Published 1 September 1983
  • Physics
  • Annals of the New York Academy of Sciences
Recent observations of the 1.5-msec pulsar in the field of 4C21.53 are summarized and discussed. Its nondetection in earlier pulsar searches is attributed to insufficient search range. It is inferred from the rotational energy of the pulsar and the lack of supernova debris in its vicinity that it has an age of at least 1 Myr, and a low magnetic moment, and that it was created either ab initio with low magnetic moment or by spin-up from a binary, with the secondary forming a supernova. The very… 



A millisecond pulsar

The puzzle of the radio properties of 4C21.53 may be resolved by the discovery and related observations of a fast pulsar, 1937+214, with a period of 1.558 ms in the constellation Vulpecula only a few degrees from the direction to the original pulsar.

Timing observations of the millisecond pulsar

Following the discovery of the rapidly spinning pulsar 1937+214 on 7 November 19821 a program of accurate pulse arrival time measurements was initiated at the Arecibo Observatory. These observations,