Intriguing Giant Pulses from the Millisecond Pulsar B1937+21

Details Intriguing Giant Pulses from the Millisecond Pulsar B1937+21 Intriguing Giant Pulses from the Millisecond Pulsar B1937+21

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99q.139k&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.139

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Scientific paper

We made observations of giant radio pulses of the millisecond pulsar B1937+21 with the NASA/JPL 70-m radio telescope at Tidbinbilla, Australia, at 1.65 GHz. The strongest detected giant pulse had a flux density of 65,000 Jy and a true width less than 15 ns. This corresponds to a brightness temperature Tb = 5 × 10^39 K, the highest observed in the Universe. We present the results of our detailed analysis of 309 detected giant pulses from the pulsar B1937+21. We discuss the shape and width of giant pulses, their arrival times, their influence on other emission characteristics, and their intensities. We estimate the energy volume density of the radiation of the giant pulses and compare it with that for the plasma and the magnetic field. We suggest that the generation of giant pulses is directly related to discharges in the pulsar polar cap region.

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