2022ApJ...941L..19X

Query : 2022ApJ...941L..19X

2022ApJ...941L..19X - Astrophys. J., 941, L19 (2022/December-2)

On the Injection Scale of the Turbulence in the Partially Ionized Very Local Interstellar Medium.

XU S. and LI H.

Abstract (from CDS):

The cascade of magnetohydrodynamic (MHD) turbulence is subject to ion-neutral collisional damping and neutral viscous damping in the partially ionized interstellar medium. By examining the damping effects in the warm and partially ionized local interstellar medium, we find that the interstellar turbulence is damped by neutral viscosity at ∼261 au and cannot account for the turbulent magnetic fluctuations detected by Voyager 1 and 2. The MHD turbulence measured by Voyager in the very local interstellar medium (VLISM) should be locally injected in the regime where ions are decoupled from neutrals for its cascade to survive the damping effects. With the imposed ion-neutral decoupling condition and the strong turbulence condition for the observed Kolmogorov magnetic energy spectrum, we find that the turbulence in the VLISM is sub-Alfvénic, and its largest possible injection scale is ∼194 au.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Magnetohydrodynamics - Interstellar plasma - Heliosphere

Simbad objects: 1

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Number of rows : 1
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 NAME LIC Cld 04 41 +31.           ~ 317 0

Query : 2022ApJ...941L..19X

Basic data :
NAME LIC -- Cloud
Other object types: otypes_help 		Cld ([GLV95])
ICRS coord. (ep=J2000) : 		04 41 12.0 +31 11 07 [ ] E 2008ApJ...673..283R
FK4 coord. (ep=B1950 eq=1950) : 		04 38 00.3 +31 05 22 [ ]
Gal coord. (ep=J2000) : 		170.0000 -10.0000 [ ]
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Identifiers (4) :
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NAME LIC NAME Local Cloud NAME Local Interstellar Cloud [GLV95] 1

References (317 between 1850 and 2026) (Total 317)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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