Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..983..642s&link_type=abstract
40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 642-645 (2008).
Astronomy and Astrophysics
Astronomy
1
Pulsars, General, Solar Nebula, Cosmogony, Neutron Stars, Telemetry: Remote Control, Remote Sensing, Radar
Scientific paper
During a 1-year tour of duty at the Ballistic Missile Early Warning Site, Clear Air Force Station, Alaska, pulsed signals unrelated to the station radar were observed. Detection of the 4-min/day sidereal advance in the times of occurrence of the signals showed that they were of astronomical origin. At least ten distinct sources were observed and approximate celestial positions of these sources determined from the azimuth and occurrence time of the signals. The strongest source, first detected in mid-August 1967, was identified with the Crab Nebula. Following the announcement of the discovery of pulsars by the Cambridge group in 1968, it was realised that the detected sources were most likely pulsars. In particular, it is virtually certain that the Crab Nebula source was the Crab pulsar. Following the recent de-activation of the radar system, it is now possible to discuss this independent discovery of pulsars.
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