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Observations of a new eclipsing binary millisecond pulsar

Published online by Cambridge University Press:  12 April 2016

B. W. Stappers
B. W. Stappers*
Affiliation:
Mount Stromlo and Siding Spring Observatory, Private Bag, Weston Creek, ACT 2611, Australia

Abstract

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We report on the discovery and timing observations of the new eclipsing binary millisecond pulsar J2051–0827. This 4.5ms pulsar is in a 2.4 hour binary orbit with a 0.027 M⊙ companion. The companion and the pulsar are separated by only 1 R⊙. The pulsar is often, but not always, eclipsed for approximately 10% of the orbit at frequencies below 660 MHz. This indicates that the eclipse material extends well beyond the Roche lobe. During a number of observations pulses have been detected throughout the eclipse region at 1.4 GHz and 2.0 GHz. The delays measured with respect to the timing model associated with these observations indicate significant structure and variability in the electron column density in the eclipse region.

Type
Part 7 Binary Systems
Information
International Astronomical Union Colloquium , Volume 160: Pulsars: Problems and Progress , 1996 , pp. 517 - 520
Copyright
Copyright © Astronomical Society of the Pacific 1996

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