2013MNRAS.436.2774I

Query : 2013MNRAS.436.2774I

2013MNRAS.436.2774I - Mon. Not. R. Astron. Soc., 436, 2774-2784 (2013/December-2)

Magnetic field generation in galactic molecular clouds.

ISTOMIN Ya.N. and KISELEV A.

Abstract (from CDS):

We investigate the magnetic field which is generated by turbulent motions of a weakly ionized gas. Galactic molecular clouds give us an example of such a medium. As in the Kazantsev-Kraichnan model we assume a medium to be homogeneous and a neutral gas velocity field to be isotropic and δ correlated in time. We take into consideration the presence of a mean magnetic field, which defines a preferred direction in space and eliminates isotropy of magnetic field correlators. Evolution equations for the anisotropic correlation function are derived. Isotropic cases with zero mean magnetic field as well as with small mean magnetic field are investigated. It is shown that stationary bounded solutions exist only in the presence of the mean magnetic field for the Kolmogorov neutral gas turbulence. The dependence of the magnetic field fluctuations amplitude on the mean field is calculated. The stationary anisotropic solution for the magnetic turbulence is also obtained for large values of the mean magnetic field.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): magnetic fields - MHD - turbulence - methods: analytical - ISM: clouds - ISM: magnetic fields

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 W 49a SFR 19 10 15.7 +09 06 05           ~ 325 2

Query : 2013MNRAS.436.2774I

Basic data :
W 49a -- Star Forming Region
Other object types: otypes_help 		HII (2012MNRAS,[ADD2012],...), BL? (2021MNRAS), SFR (2013MNRAS), gam (4FGL), Rad (W)
ICRS coord. (ep=J2000) : 		19 10 15.7 +09 06 05 [ ] D 1989ApJS...71..469L
FK4 coord. (ep=B1950 eq=1950) : 		19 07 52.1 +09 01 08 [ ]
Gal coord. (ep=J2000) : 		043.1688 +00.0018 [ ]
Angular size (arcmin): 		3.4 3.4 90 (Rad) D 2006ApJ...653.1226Q
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Identifiers (6) :
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4FGL J1910.2+0904c W 49a [KB94] 47
GAL 043.169+00.00 [ADD2012] HII 48 [L89b] 43.169+00.002

References (325 between 1850 and 2026) (Total 325)
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