Pulsed 10-30 MeV gamma rays from PSR0833-45

Details Pulsed 10-30 MeV gamma rays from PSR0833-45 Pulsed 10-30 MeV gamma rays from PSR0833-45

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.251..400a&link_type=abstract

Nature, Volume 251, Issue 5474, pp. 400-402 (1974).

Physics

29

Scientific paper

OF the more than 100 known pulsars the one in Vela, PSR0833-45 is the most like the Crab pulsar in many of its characteristics. It has the second shortest period (89 ms), the second largest dP/dt, undergoes sudden `glitches' or decreases in its period1 and is associated with a known supernova remnant2. The many optical searches for pulsed radiation have so far been negative3. In the X-ray region a positive result was reported for 0.5 to 1.5 keV but 29 ms earlier in phase than the radio frequency pulse4. At 23 to 80 keV evidence was found for pulsed emission with a period 155 ns different from the radio period5. Later X-ray observations have not detected any pulsed radiation6-8. Observations from Uhuru show an X-ray source at this position9, but the time resolution was too long to detect pulsing. Grindlay et al.10 have reported a possible indication of pulsed emission above 3 × 1011 eV.

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