An unusual glitch signature in the pulsar PSR B1822-09
Received 17 February 1998 / Accepted 30 June 1998
Two glitches have been detected in the pulsar PSR B1822-09. The first glitch occurred around MJD 49615 and was characterized by a fractional increase in rotational frequency of . The second glitch occurred 325 days after the first one and caused a fractional change in frequency of . Of interest was the post-glitch behaviour. The rotational frequency immediately after the second glitch began slowly, gradually increasing which lasted 620 days. As a result of the slow increase a fractional change in rotation frequency for this period of time made up . This event was accompanied by a decrease in the frequency derivative, which having reached minimum magnitude less than the original value, returned to its initial value.
Key words: pulsars: general pulsars: individual: PSR B1822-09 stars: rotation
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© European Southern Observatory (ESO) 1998
Online publication: August 27, 1998