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Polarized gamma-ray emission from the Crab

Polarized gamma-ray emission from the Crab
Polarized gamma-ray emission from the Crab
Pulsar systems accelerate particles to immense energies. The detailed functioning of these engines is still poorly understood, but polarization measurements of high-energy radiation may allow us to locate where the particles are accelerated. We have detected polarized gamma rays from the vicinity of the Crab pulsar using data from the spectrometer on the International Gamma-Ray Astrophysics Laboratory satellite. Our results show polarization with an electric vector aligned with the spin axis of the neutron star, demonstrating that a substantial fraction of the high-energy electrons responsible for the polarized photons are produced in a highly ordered structure close to the pulsar.
0036-8075
1183-1185
Dean, A.J.
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Clark, D.J.
4d37cdbe-d8f5-47c6-a135-7950843def36
Stephen, J.B.
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McBride, V.A.
a4608811-5a3f-4218-ada0-28f57ec2a0fd
Bassani, L.
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Bazzano, A.
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Bird, A.J.
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Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
Shaw, S.E.
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Ubertini, P.
7035748e-152c-473e-8766-a2fa3ac49fcb
Dean, A.J.
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Clark, D.J.
4d37cdbe-d8f5-47c6-a135-7950843def36
Stephen, J.B.
c0b1afce-f3d9-4568-b2c1-51482f80cd9a
McBride, V.A.
a4608811-5a3f-4218-ada0-28f57ec2a0fd
Bassani, L.
07e5602c-f97e-4334-a0fa-c2212431a61a
Bazzano, A.
8eef0c6e-1a5f-4bcd-a034-9a5c3b29104d
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
Shaw, S.E.
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Ubertini, P.
7035748e-152c-473e-8766-a2fa3ac49fcb

Dean, A.J., Clark, D.J., Stephen, J.B., McBride, V.A., Bassani, L., Bazzano, A., Bird, A.J., Hill, A.B., Shaw, S.E. and Ubertini, P. (2008) Polarized gamma-ray emission from the Crab. Science, 321 (5893), 1183-1185. (doi:10.1126/science.1149056).

Record type: Article

Abstract

Pulsar systems accelerate particles to immense energies. The detailed functioning of these engines is still poorly understood, but polarization measurements of high-energy radiation may allow us to locate where the particles are accelerated. We have detected polarized gamma rays from the vicinity of the Crab pulsar using data from the spectrometer on the International Gamma-Ray Astrophysics Laboratory satellite. Our results show polarization with an electric vector aligned with the spin axis of the neutron star, demonstrating that a substantial fraction of the high-energy electrons responsible for the polarized photons are produced in a highly ordered structure close to the pulsar.

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More information

Published date: 29 August 2008
Organisations: Astronomy and Space Science

Identifiers

Local EPrints ID: 144805
URI: http://eprints.soton.ac.uk/id/eprint/144805
ISSN: 0036-8075
PURE UUID: 26098052-f243-4e4b-8231-5b17d2a02330
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937
ORCID for A.B. Hill: ORCID iD orcid.org/0000-0003-3470-4834

Catalogue record

Date deposited: 24 May 2010 10:37
Last modified: 09 Nov 2021 03:08

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Contributors

Author: A.J. Dean
Author: D.J. Clark
Author: J.B. Stephen
Author: V.A. McBride
Author: L. Bassani
Author: A. Bazzano
Author: A.J. Bird ORCID iD
Author: A.B. Hill ORCID iD
Author: S.E. Shaw
Author: P. Ubertini

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