2004MNRAS.355...31J -
Mon. Not. R. Astron. Soc., 355, 31-36 (2004/November-3)
Radio and X-ray observations of PSR B0540-69.
JOHNSTON S., ROMANI R.W., MARSHALL F.E. and ZHANG W.
Abstract (from CDS):
PSR B0540-69 is one of a small handful of pulsars known to emit giant pulses and the only extra-galactic pulsar known to do so. We observed the pulsar for a total of 72 h over a 6 month interval and detected 141 giant pulses. We have obtained correct phasing between the radio arrival times of the giant pulses and the X-ray pulse profile. The giant pulses occur in two phase windows, located 6.7 ms before and 5.0 ms after the mid-point of the X-ray profile. We have detected the integrated profile of the pulsar at 1.4 GHz with a flux density of only 24 µJy. The statistics of the giant pulses are clearly power law and it is likely that the giant pulses contribute only a few per cent of the integrated pulse flux density, similar to other pulsars with giant pulse emission. Simultaneous X-ray and radio observations show no significant increase in the X-ray flux at the time of the radio giants. The relative enhancements in the X-ray emission must be at least 5.5 times smaller than in the radio emission.
Abstract Copyright:
2004 RAS
Journal keyword(s):
pulsars: individual: PSR B0540-69
Simbad objects:
7
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