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Title:
A search for radio pulsars around low-mass white dwarfs
Authors:
van Leeuwen, Joeri; Ferdman, Robert D.; Meyer, Sol; Stairs, Ingrid
Affiliation:
AA(Department of Physics & Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada; ), AB(Department of Physics & Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada; ), AC(Department of Physics & Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada; ), AD(Department of Physics & Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada; )
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 374, Issue 4, pp. 1437-1440. (MNRAS Homepage)
Publication Date:
02/2007
Origin:
MNRAS
MNRAS Keywords:
pulsars: general , white dwarfs
Abstract Copyright:
(c) 2006 The Authors. Journal compilation © 2006 RAS
DOI:
10.1111/j.1365-2966.2006.11243.x
Bibliographic Code:
2007MNRAS.374.1437V

Abstract

Low-mass white dwarfs can be produced either in low-mass X-ray binaries by stable mass transfer to a neutron star, or in a common envelope phase with a heavier white dwarf companion. We have searched eight low-mass white dwarf candidates recently identified in the Sloan Digital Sky Survey for radio pulsations from pulsar companions, using the Green Bank Telescope at 340MHz. We have found no pulsations down to flux densities of 0.6-0.8mJykpc-2 and conclude that a given low-mass helium-core white dwarf has a probability of <0.18 +/- 0.05 of being in a binary with a radio pulsar.
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