Beating the Spin-Down Limit on Gravitational Wave Emission from the Crab Pulsar

Pitkin, M. (2008) Beating the Spin-Down Limit on Gravitational Wave Emission from the Crab Pulsar. Astrophysical Journal Letters, 683 (1). L45-L49. ISSN 2041-8205

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Abstract

We present direct upper limits on gravitational wave emission from the Crab pulsar using data from the first 9 months of the fifth science run of the Laser Interferometer Gravitational-wave Observatory (LIGO). These limits are based on two searches. In the first we assume that the gravitational wave emission follows the observed radio timing, giving an upper limit on gravitational wave emission that beats indirect limits inferred from the spin-down and braking index of the pulsar and the energetics of the nebula. In the second we allow for a small mismatch between the gravitational and radio signal frequencies and interpret our results in the context of two possible gravitational wave emission mechanisms.

Item Type:
Journal Article
Journal or Publication Title:
Astrophysical Journal Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3103
Subjects:
ID Code:
136101
Deposited By:
Deposited On:
13 Aug 2019 08:00
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Aug 2020 09:24