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Galactic dynamo simulations

Published online by Cambridge University Press:  01 November 2008

Detlef Elstner ,
Oliver Gressel  and
Günther Rüdiger
Detlef Elstner
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected]
Oliver Gressel
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected]
Günther Rüdiger
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected]
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Abstract

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Recent simulations of supernova-driven turbulence within the ISM support the existence of a large-scale dynamo. With a growth time of about two hundred million years, the dynamo is quite fast – in contradiction to many assertions in the literature. We here present details on the scaling of the dynamo effect within the simulations and discuss global mean-field models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.

Keywords

ISM: magnetic fields – galaxies: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 467 - 478
Copyright
Copyright © International Astronomical Union 2009

References

Arlt, R. & Rüdiger, G. 2001 A&A 374, 1035Google Scholar
Balbus, S. A. & Hawley, J. F. 1991, ApJ 376, 214CrossRefGoogle Scholar
Beck, R. & Hoernes, P. 1996, Nature 379, 47CrossRefGoogle Scholar
Beck, R., Brandenburg, A., Moss, D., Shukurov, A., & Sokoloff, D. 1996, ARAA 34, 155CrossRefGoogle Scholar
Beck, R., Fletcher, A., Shukurov, A., Snodin, A., Sokoloff, D. D., Ehle, M., Moss, D., & Shoutenkov, V. 2005, A&A 444, 739Google Scholar
Beck, R. 2009, this proceedingsGoogle Scholar
Brandenburg, A., Donner, K. J., Moss, D., Shukurov, A., Sokoloff, D. D., & Tuominen, I. 1993, A&A 271, 36.Google Scholar
Brandenburg, A. & Sokoloff, D. D. 2002, GApFD 96, 319Google Scholar
Brandenburg, A. 2009, this proceedingsGoogle Scholar
Chandrasekhar, S. 1960, Proc. Nat. Acad. Sci. 46, 253CrossRefGoogle Scholar
Chyży, K. T. & Buta, R. J. 2008, ApJ 677, L17Google Scholar
Donner, K.J. & Brandenburg, A. 1990, A&A 240, 289Google Scholar
Dziourkevitch, N., Elstner, D., & Rüdiger, G. 2004, A&A 423, L29Google Scholar
Elstner, D., Meinel, R., & Beck, R. 1992, A&AS 94, 587Google Scholar
Elstner, D., Golla, G., Rüdiger, G., & Wielebinski, R. 1995, A&A 297, 77Google Scholar
Elstner, D., Otmianowska-Mazur, K., von Linden, S., & Urbanik, M. 2000, A&A 357, 129Google Scholar
Ferrière, K. & Schmitt, D. 2000, A&A 358, 125Google Scholar
Ferrière, K. 1998, A&A 335, 488Google Scholar
Fröhlich, H.E. & Schultz, M. 1996, A&A 311, 451Google Scholar
Gressel, O., Elstner, D., Ziegler, U., & Rüdiger, G. 2008, A&A 486, L35Google Scholar
Gressel, O., Ziegler, U., Elstner, D., & Rüdiger, G. 2009, this proceedingsGoogle Scholar
Hanasz, M., Kowal, G., Otmianowska-Mazur, K. & Lesch, H. 2004, ApJ 605, L33CrossRefGoogle Scholar
Kaisig, M., Rüdiger, G., & Yorke, H. W. 1993, A&A 274, 757Google Scholar
Käpylä, P. J., Korpi, M. J., & Brandenburg, A. 2008, A&A 491, 353Google Scholar
Kitchatinov, L.L. & Mazur, M.V. 1997, A&A 324, 821Google Scholar
Kitchatinov, L.L. & Rüdiger, G. 2004, A&A 424, 565Google Scholar
Moss, D., Korpi, M., Rautiainen, P., & Salo, H. 1998, A&A 329, 895Google Scholar
Moss, D., Snodin, A., Englmaier, P., Shukurov, A., Beck, R., & Sokoloff, D. 2007, A&A 465, 157Google Scholar
Nishikori, H., Machida, M., & Matsumoto, R. 2006, ApJ 641, 862CrossRefGoogle Scholar
Otmianowska-Mazur, K., Elstner, D., Soida, M., & Urbanik, M. 2002, A&A 384, 48Google Scholar
Parker, E. N. 1971, ApJ 164, 491CrossRefGoogle Scholar
Piontek, R A. & Ostriker, E. C. 2007, ApJ 663, 183Google Scholar
Rohde, R. & Elstner, D. 1998, A&A 333, 27Google Scholar
Rohde, R., Beck, R., & Elstner, D. 1999, A&A 350, 423Google Scholar
Rüdiger, G. & Kitchatinov, L.L. 1993, A&A 269, 581Google Scholar
Sellwood, J.A. & Balbus, S.A. 1999, ApJ 511, 660Google Scholar
Shukurov, A. 1998, MNRAS 299, L21CrossRefGoogle Scholar
Stix, M. 1975, A&A 42, 85–89.Google Scholar
Sur, S., Shukurov, A., & Subramanian, K. 2007, MNRAS 377, 874.CrossRefGoogle Scholar
Velikhov, E.P. 1959, Sov. Phys. JETP 9, 995Google Scholar
White, M. 1978, AN 299, 209Google Scholar
Ziegler, U. 1996, A&A 313, 448Google Scholar