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Turbulence and magnetic fields in molecular clouds

Published online by Cambridge University Press:  03 August 2017

R. N. Henriksen*
Affiliation:
service d'astrophysique, batiment 528 c.e.n. saclay, 91191 gif sur yvette cedex, france E-mail @32779::henriksen.

Abstract

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in this paper I first review some of the simple structural concepts associated with compressible turbulence. In particular the hierarchical or self-similar fractal structure to be expected is formulated in a manner readily compared to the observations, and to previous work. In the next section I present the first results of a wavelet analysis on molecular clouds, which seem to comfirm the hierarchical scaling. I conclude with an extention of the theory to include magnetic fields. This latter theory represents an alternative to the more conventional dynamo theory.

Type
Velocity Field and Magnetic Field
Copyright
Copyright © Kluwer 1991 

References

Argoul, F., Arneodo, A., Elezgaray, J., Grasseau, G. and Murenzi, R.: 1989, “Wavelet Transform of Fractal Aggregates.” Physics Letters A, 135, 327336.Google Scholar
Chaboyer, B. and Henriksen, R.N.: 1990, “Turbulent Magnetic Fields I” Astron. Astrophys., in press.Google Scholar
Chandrasekhar, S.: 1955a, “Homogeneous Turbulence I” Proc. Roy. Soc. A, 233, 322.Google Scholar
Chandrasekhar, S.: 1955b, “Homogeneous Turbulence II” Proc. Roy. Soc. A, 233, 330.Google Scholar
Chandrasekhar, S.: 1957, “Homogeneous Turbulence III” Annals of Physics, 2, 615.Google Scholar
Elmegreen, B.G.: 1989, “A Pressure and Metallicity Dependence for Molecular Cloud Correlations and the Calibration of Mass.” Astrophys. Journal, 338, 178.CrossRefGoogle Scholar
Gill, A. and Henriksen, R.N.: 1990, “A First Use of Wavelet Analysis for Molecular Clouds” Astrophys. Journal, submitted.Google Scholar
Henriksen, R.N. and Turner, B.E.: 1984, “Star Cloud Turbulence” Astrophys. Journal, 287, 200207.Google Scholar
Henriksen, R.N.: 1986, “Star Formation in Giant Molecular Clouds.” Astrophys. Journal, 310, 189.Google Scholar
Henriksen, R.N.: 1988, “Inhomogeneous Turbulence” Astrophys. Journal, 331, 359369.Google Scholar
Henriksen, R.N.: 1990, “On Molecular Cloud Scaling Laws and Star Formation” Astrophys. Journal, submitted.Google Scholar
Hoyng, P.: 1987a, “On Magnetic Dynamos I” Astron. Astrophys., 171, 348.Google Scholar
Hoyng, P.: 1987b, “On Magnetic Dynamos II” Astron. Astrophys., 171, 357.Google Scholar
Hoyng, P.: 1988, “On Magnetic Dynamos III” Astrophys. Journal, 332, 857.Google Scholar
Lattanzio, J.C. and Henriksen, R.N.: 1988, “Collisions Between Rotating Interstellar Clouds” Mon. Not. R. astr. Soc., 232, 565614.CrossRefGoogle Scholar
Moriarty-Schieven, G.H. and Snell, R.: 1988 “The Star Forming Region L1551” Astrophys. Journal, 332, 364.Google Scholar
Zinnecker, H.: 1984 “Star Formation from Hierarchical Cloud Fragmentation: A Statistical Theory of the log-normal IMF.” Mon. Not. Roy. astr. Soc., 210, 4356.Google Scholar
Zinnecker, H.: 1989 “Star Formation in Galaxies” in Evolutionary Phenomena in Galaxies, (Beckman, J., Ed.), 115, Cambridge University Press.Google Scholar