Radio emission from a pulsar's magnetic pole revealed by general relativity.
Journal
Science (New York, N.Y.)
ISSN: 1095-9203
Titre abrégé: Science
Pays: United States
ID NLM: 0404511
Informations de publication
Date de publication:
06 09 2019
06 09 2019
Historique:
received:
23
10
2018
accepted:
08
08
2019
entrez:
7
9
2019
pubmed:
7
9
2019
medline:
7
9
2019
Statut:
ppublish
Résumé
Binary pulsars are affected by general relativity (GR), causing the spin axis of each pulsar to precess. We present polarimetric radio observations of the pulsar PSR J1906+0746 that demonstrate the validity of the geometrical model of pulsar polarization. We reconstruct the (sky-projected) polarization emission map over the pulsar's magnetic pole and predict the disappearance of the detectable emission by 2028. Two tests of GR are performed using this system, including the spin precession for strongly self-gravitating bodies. We constrain the relativistic treatment of the pulsar polarization model and measure the pulsar beaming fraction, with implications for the population of neutron stars and the expected rate of neutron star mergers.
Identifiants
pubmed: 31488685
pii: 365/6457/1013
doi: 10.1126/science.aav7272
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1013-1017Subventions
Organisme : European Research Council
Pays : International
Informations de copyright
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.