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Astron. Astrophys. 354, 960-964 (2000) 1. IntroductionIn 1994 and 1995 the pulsar B1822-09 underwent two glitches in its
spin-down behavior and they had an unusual signature. These glitches
were accompanied by a decrease in the magnitude of the frequency
derivative, In this paper we continue to investigate the glitch behavior of the pulsar B1822-09. Two new glitches were detected on 1998 April 28 and 1998 August 30. Their signature was similar to that of the previous glitches - an increase in rotational frequency was accompanied by a decrease in the magnitude of the frequency derivative. PSR B1822-09 is the first glitching pulsar to be observed practically simultaneously at widely separated frequencies of 0.1 and 2.3 GHz during seven years since 1991 March to 1998 May. It is shown that glitches did not affect the pulse arrival times at different observing frequencies within 2 ms. Glitch signature was identical in the wide frequency range from 0.1 to 2.3 GHz. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: February 25, 2000 ![]() |