scholarly journals Probing the Turbulence Dissipation Range and Magnetic Field Strengths in Molecular Clouds

2008 ◽  
Vol 677 (2) ◽  
pp. 1151-1156 ◽  
Author(s):  
Hua‐bai Li ◽  
Martin Houde
Keyword(s):  
Magnetic Field ◽  
Molecular Clouds ◽  
Dissipation Range ◽  
Field Strengths

scholarly journals Measurement of Magnetic-Field Strengths in Molecular Clouds: Detection of OH Line Zeeman Splitting

1987 ◽  
Vol 115 ◽  
pp. 55-57
Author(s):  
I. Kazès ◽  
R. M. Crutcher ◽  
T. H. Troland
Keyword(s):  
Magnetic Field ◽  
Radio Telescope ◽  
Molecular Clouds ◽  
Stokes Parameter ◽  
Zeeman Splitting ◽  
Spectral Lines ◽  
First Results ◽  
Extended Program ◽  
Interstellar Molecular Clouds ◽  
Field Strengths

We report here the first results of an extended program to measure magnetic-field strengths in interstellar molecular clouds. The very large radio telescope located near Nancay, France, has been used to measure the Stokes-parameter I and V spectra of the 1665 and 1667 MHz lines of OH in emission and in absorption from extended (non-masing) molecular clouds. Signals in the V spectra are produced by Zeeman splitting of the spectral lines; we derive magnetic-field strengths or limits from these data.

scholarly journals New OH Zeeman Measurements of Magnetic Field Strengths in Molecular Clouds

2001 ◽  
Vol 554 (2) ◽  
pp. 916-932 ◽  
Author(s):  
Tyler L. Bourke ◽  
Philip C. Myers ◽  
Garry Robinson ◽  
A. R. Hyland
Keyword(s):  
Magnetic Field ◽  
Molecular Clouds ◽  
Field Strengths

scholarly journals Observational Aspects of Magnetic Fields in Molecular Clouds

1990 ◽  
Vol 140 ◽  
pp. 293-300
Author(s):  
T. H. Troland
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Molecular Clouds ◽  
Zeeman Effect ◽  
Growing Body ◽  
Field Strengths

A small but growing body of observational information now exists regarding magnetic field strengths in molecular regions. Most of these data come from study of the Zeeman effect in 18 cm OH lines. The field is strong enough in many such regions to be dynamically important.

Magnetic-field strengths from optical polarization data

1967 ◽  
Vol 31 ◽  
pp. 381-383
Author(s):  
J. M. Greenberg
Keyword(s):  
Magnetic Field ◽  
Optical Polarization ◽  
Polarization Data ◽  
Term Model ◽  
Source Of Information ◽  
Field Strengths

Van de Hulst (Paper 64, Table 1) has marked optical polarization as a questionable or marginal source of information concerning magnetic field strengths. Rather than arguing about this–I should rate this method asq+-, or quarrelling about the term ‘model-sensitive results’, I wish to stress the historical point that as recently as two years ago there were still some who questioned that optical polarization was definitely due to magnetically-oriented interstellar particles.

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