The effect of an ordered azimuthal magnetic field on a migrating planet in a non-turbulent disc

Autor:	Comins, M. L., Romanova, M. M., Koldoba, A. V., Ustyugova, G. V., Lovelace, R. V. E.
Rok vydání:	2013
Předmět:	Astrophysics - Earth and Planetary Astrophysics
Druh dokumentu:	Working Paper
Popis:	In this work, we consider the physics of the interaction between a planet and a magnetized gaseous protoplanetary disc. We investigate the migration of a planet in a disc that is threaded with an azimuthal magnetic field. We find that, for a larger magnetic field amplitude, there is an increasingly large positive torque on the planet from the disc, resulting in slowed and even outward migration. Our results indicate that magnetic resonances due to a purely azimuthal, ordered magnetic field can slow or stop the inward migration of Jupiter-mass, Saturn-mass, and $5 M_{\oplus}$ planets. Comment: 14 pages, 11 figures, submitted to MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1310.6697 Zobrazit plný text záznamu View this record from Arxiv