Limits on the anomalous speed of gravitational waves from binary pulsars

Abstract : A large class of modified theories of gravity used as models for dark energy predict a propagation speed for gravitational waves which can differ from the speed of light. This difference of propagations speeds for photons and gravitons has an impact in the emission of gravitational waves by binary systems. Thus, we revisit the usual quadrupolar emission of binary system for an arbitrary propagation speed of gravitational waves and obtain the corresponding period decay formula. We then use timing data from the Hulse-Taylor binary pulsar and obtain that the speed of gravitational waves can only differ from the speed of light at the percentage level. This bound places tight constraints on dark energy models featuring an anomalous propagations speed for the gravitational waves.
Type de document :
Communication dans un congrès
7th International Workshop on Astronomy and Relativistic Astrophysics, Oct 2016, Gramado, Brazil. Int.J.Mod.Phys.Conf.Ser., 45, pp.1760016, 2017, 〈10.1142/S2010194517600163〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01584602
Contributeur : Inspire Hep <>
Soumis le : samedi 9 septembre 2017 - 00:36:28
Dernière modification le : jeudi 23 novembre 2017 - 01:28:14

Identifiants

Collections

Citation

Hermano Velten, Jose Jiménez, Federico Piazza. Limits on the anomalous speed of gravitational waves from binary pulsars. 7th International Workshop on Astronomy and Relativistic Astrophysics, Oct 2016, Gramado, Brazil. Int.J.Mod.Phys.Conf.Ser., 45, pp.1760016, 2017, 〈10.1142/S2010194517600163〉. 〈hal-01584602〉

Partager

Métriques

Consultations de la notice

41