We report the discovery of a new eclipsing millisecond binary pulsar system, PSR J2051-0827. The pulsar has a period of 4.5 ms and is in a very compact circular orbit with a companion of mass ~0.03 M ☉ . Observations at low frequencies show that the eclipse duration is approximately 10% of the orbital period. However, at high radio frequencies, pulses are often detected throughout the eclipse region, revealing interesting time-variable density structure in the eclipsing plasma.
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Stappers et al. (1996) studied this question.
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