2018MNRAS.480.3671M

Query : 2018MNRAS.480.3671M

2018MNRAS.480.3671M - Mon. Not. R. Astron. Soc., 480, 3671-3679 (2018/November-1)

Rossby vortices in thin magnetized accretion discs.

MATILSKY L., DYDA S., LOVELACE R.V.E. and LII P.S.

Abstract (from CDS):

We study the Rossby wave instability (RWI) in a thin accretion disc threaded by an initially toroidal magnetic field using the magnetohydrodynamics (MHD) code PLUTO. We find that for plasma β in the range 101 <= β <= 103, the growth rate and late-time density are suppressed, whereas for plasma β > 103, the magnetic field has negligible effect. The initially toroidal field is twisted inside the vortex and expelled at late times. This creates a radially directed field outside the vortex region, which can be understood via a simple kinematic model of a magnetic field in a rotating fluid and may be observable via polarized dust emission.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - instabilities - MHD - planets and satellites: magnetic fields - protoplanetary discs

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* HL Tau Or* 04 31 38.5107609312 +18 13 57.859747968   15.89 14.49 14.39   K5 1546 0
2 HD 319139 SB* 18 14 10.4818675368 -32 47 34.516836060   11.47 10.68   9.11 K5+K7 423 0

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