A new , low braking index for the LMC PULSAR B0540-69

Abstract : We report the results of a 16-month monitoring campaign using the Swift satellite of PSR 0 ¯ 540, a young pulsar in the Large Magellanic Cloud. Phase connection was maintained throughout the campaign so that a reliable ephemeris could be determined, and the length of the campaign is adequate to accurately determine the spin frequency ν and its first and second derivatives. The braking index n is 0.031 ± 0.013 (90% confidence), a value much lower than previously reported for 0 ¯ 540 and almost all other young pulsars. We use data from the extensive monitoring campaign with RXTE to show that timing noise is unlikely to significantly affect the measurement. This is the first measurement of the braking index in the pulsar's recently discovered high spin-down state. We discuss possible mechanisms for producing the low braking index.
Liste complète des métadonnées

Littérature citée [17 références]  Voir  Masquer  Télécharger

Contributeur : Nathalie Rouchon <>
Soumis le : mardi 22 novembre 2016 - 10:39:06
Dernière modification le : jeudi 7 février 2019 - 17:06:19
Document(s) archivé(s) le : mardi 21 mars 2017 - 02:22:54


Fichiers produits par l'(les) auteur(s)


Distributed under a Creative Commons Paternité - Pas d'utilisation commerciale - Pas de modification 4.0 International License




F Marshall, Lucas Guillemot, A Harding, Pierre Martin, D Smith. A new , low braking index for the LMC PULSAR B0540-69. The Astrophysical journal letters, Bristol : IOP Publishing, 2016, 827 (2), pp.39-39. 〈10.3847/2041-8205/827/2/L39〉. 〈insu-01400560〉



Consultations de la notice


Téléchargements de fichiers