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Ha, ha, ha, ha, staying alive, staying alive: A radio pulsar with an 8.5-s period challenges emission models

Published online by Cambridge University Press:  12 April 2016

M. D. Young ,
R. N. Manchester  and
S. Johnston
M. D. Young
Affiliation:
Department of Physics, University of Western Australia, Nedlands, WA 6907, Australia
R. N. Manchester
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia
S. Johnston
Affiliation:
Research Centre for Theoretical Astrophysics, University of Sydney, NSW 2006, Australia

Abstract

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We report the discovery of the longest known radio pulsar period. PSR J2144–3933, previously thought to have a period of 2.84 s, actually has a period of 8.51 s. Under the usual assumptions about the stellar equation of state, this pulsar has an average surface dipolar magnetic field strength of ~ 2.0 × 1012G. According to popular theories of the emission mechanism this pulsar should not be emitting radio waves because its long period and magnetic field strength make pair creation impossible for all reasonable magnetic field configurations. Either assumptions about the equation of state are incorrect, or the emission theories must be revised.

Type
Part 3. Studies of Radio Emission
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 185 - 188
Copyright
Copyright © Astronomical Society of the Pacific 2000

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