Bailes, M. and Bates, S. D. and Bhalerao, V. B. and Bhat, N. D. R. and Burgay, M. and Burke-Spolaor, S. and D'Amico, N. and Johnston, S. and Keith, M. J. and Kramer, M. and Kulkarni, S. R. and Levin, L. and Lyne, A. G. and Milia, S. and Possenti, A. and Spitler, L. and Stappers, B. and van Straten, W. (2011) Transformation of a Star into a Planet in a Millisecond Pulsar Binary. Science, 333 (6050). pp. 1717-1720. ISSN 0036-8075 http://resolver.caltech.edu/CaltechAUTHORS:20111011-145538757
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Millisecond pulsars are thought to be neutron stars that have been spun-up by accretion of matter from a binary companion. Although most are in binary systems, some 30% are solitary, and their origin is therefore mysterious. PSR J1719−1438, a 5.7-millisecond pulsar, was detected in a recent survey with the Parkes 64-meter radio telescope. We show that this pulsar is in a binary system with an orbital period of 2.2 hours. The mass of its companion is near that of Jupiter, but its minimum density of 23 grams per cubic centimeter suggests that it may be an ultralow-mass carbon white dwarf. This system may thus have once been an ultracompact low-mass x-ray binary, where the companion narrowly avoided complete destruction.
|Additional Information:||© 2011 American Association for the Advancement of Science. Received 25 May 2011; accepted 3 August 2011. Published online 25 August 2011. The Parkes Observatory is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This project is supported by the ARC Programmes under grants DP0985270, DP1094370, and CE110001020. Access to the Lovell telescope is funded through a Science and Technologies Facilities Council rolling grant. Keck telescope time is made available through a special collaborative program between Swinburne Univ. of Technology and California Institute of Technology. We are grateful to J. Roy and Y. Gupta for early attempts to obtain a pulsar position with the Giant Metrewave Radio Telescope.|
|Group:||TAPIR, Space Radiation Laboratory|
|Official Citation:||Transformation of a Star into a Planet in a Millisecond Pulsar Binary M. Bailes, S. D. Bates, V. Bhalerao, N. D. R. Bhat, M. Burgay, S. Burke-Spolaor, N. D’Amico, S. Johnston, M. J. Keith, M. Kramer, S. R. Kulkarni, L. Levin, A. G. Lyne, S. Milia, A. Possenti, L. Spitler, B. Stappers, and W. van Straten|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||12 Oct 2011 14:38|
|Last Modified:||22 Feb 2013 04:35|
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