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Angular Momentum Transport and Magnetic Fields in the Solar Interior

Published online by Cambridge University Press:  12 April 2016

H.C. Spruit*
Affiliation:
Max Planck Institut für Physik und Astrophysik, Karl-Schwarzschildstr. 1, 8046 GarchingWest Germany

Abstract

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The possible mechanisms of angular momentum transport in convectively stable regions of a star are reviewed, with emphasis on transport by magnetic torques. The strength and configuration of the field in such layers is quite uncertain, because it is not known if the field can reach a dynamically stable configuration. A lower limit to the field strength is obtained by assuming that the field is always dynamically unstable, and decaying at the (rotation modified) dynamical time scale. The present field in the sun would then be of the order 1G, with poloidal and toroidal components of similar strength. The differential rotation in the core, if due only to the solar wind torque, would be very small for this field strength, and instead would more likely be governed by magnetic coulpling to the differential rotation of the convection zone. If small scale hydrodynamic transport mechanisms are present, their properties would also be influenced by a field of this strength.

Type
Part 4: Solar Cycle, Dynamo and Transport Processes
Copyright
Copyright © Kluwer 1990

References

Baglin, A., Morel, P.J., Schatzman, E. 1985, Astron. Astrophys., 149, 309 Google Scholar
Berger, M.A. 1986, Geophys. Astrophys. Fluid Dyn., 34, 256 Google Scholar
Blandford, R.D., Payne, D.G. 1982, Mon. Not. R. astron. Soc., 199, 883 Google Scholar
Benton, E.R., Loper, D.E. 1970, J. Fluid Mech., 43, 75 Google Scholar
Benton, E.R., Clark, D.E. 1974, Ann. Rev. Fluid Mech. 6, 257 CrossRefGoogle Scholar
Brown, T.M. Christensen-Dalsgaard, J., Dziembowski, W.A., Goode, P., Gough, D.O., Morrow, C.A. 1989. Astrophys., J., 343 526 Google Scholar
Duvall, T.L. Jr., Harvey, J.W. 1984, Nature, 310, 19 Google Scholar
Goldreich, P., Nicholson, P. 1989, preprintGoogle Scholar
Heyvaerts, J., Priest, E.R. 1983, Astron. Astrophys., 117, 220 Google Scholar
Hurlburt, N.E., Toomre, J., Massaguer, J.M. 1986, Astrophys., J., 311, 563 Google Scholar
Ionson, J.A. 1978, Astrophys., J., 226, 650 CrossRefGoogle Scholar
Königl, A. 1989, Astrophys., J., 342, 208 Google Scholar
Lovelace, R.V.E., Wang, J.C.L., Sulkanen, M.E. 1987, Astrophys., J., 315, 504 Google Scholar
Mestel, L. 1984, Astron. Nachr. 305, 301 Google Scholar
Mestel, L., Weiss, N.O. 1987, Mon. Not. R. astron. Soc., 226, 123 Google Scholar
Moreno Insertis, F. 1986, Astron. Astrophys., 166, 291 Google Scholar
Osaki, Y. 1982, Publ. Astr. Soc. Japan, 34, 257 Google Scholar
Pitts, E., Tayler, R.J. 1985, Mon. Not. R. astron. Soc., 216, 139 Google Scholar
Pizzo, V., Schwenn, R., Marsch, E., Rosenbauer, H., Mühlhäuser, K.-H., Neubauer, F.M. 1983, Astrophys., J., 271, 335 Google Scholar
Press, W.H. 1981. Astrophys., J., 245, 111 Google Scholar
Pudritz, R.E., Norman, C.A. 1983, Astrophys., J., 274, 677 Google Scholar
Rädler, K.-H., 1986, preprintGoogle Scholar
Sakurai, T. 1975, Mon. Not. R. astron. Soc., 171, 35 Google Scholar
Schatzman, E., 1962, Ann. Astrophys., 222, 317 Google Scholar
Schmitt, J.H.M.M., Rosner, R., Bohn, H.U. 1984, Astrophys., J., 282 316 Google Scholar
Soderblom, D. 1988 in The Impact of very high S/N etc., eds. Cayrel de Strobel, G. and Spite, M. (IAU Symp. 132), Kluwer, Dordrecht, p 381 Google Scholar
Spruit, H.C. 1987a, in it Physical Processes on Comets, Stars and Active Galaxies, eds. Hillebrandt, W., Meyer-Hofmeister, E. and Thomas, H.-C., Springer, Heidelberg, p78 Google Scholar
Spruit, H.C., 1987b, in The Internal Solar Angular Velocity, eds. Durney, B.R. and Sofia, S., Reidel, Dordrecht, pl85 Google Scholar
Spruit, H.C., Roberts, B. 1983, Nature, 304, 401 Google Scholar
Spruit, H.C., Knobloch, E., Roxburgh, I.W. 1983, Nature, 304, 320 Google Scholar
Tassoul, J.-L. 1989, Astron. Astrophys.,Google Scholar
Tayler, R.J., 1980, Mon. Not. R. astron. Soc., 191, 151 Google Scholar
Vauclair, S. 1988, Astrophys., J., 335, 971 Google Scholar
van Assche, W., Tayler, R.J., Goosens, M. 1982, Astron. Astrophys., 109, 166 Google Scholar
van Ballegooijen, A.A. 1982. Astron. Astrophys., 113, 99 Google Scholar
Woltjer, L. 1958, Proc. Natl. Acad. Sci. USA 44, 489 Google Scholar
Zahn, J.-P. 1974, in Stellar Instability and Evolution, eds. Ledoux, P., Noels, A. and Rogers, R.W., Reidel, Dordrecht, pl85 Google Scholar
Zahn, J.-P. 1983, in Astrophysical Processes in upper Main Sequence Stars, Geneva Observatory, Switzerland, p225 Google Scholar
Zahn, J.-P. 1977, Astron. Astrophys., 57, 383 Google Scholar
Zeldovich, Ya. B., Ruzmaikin, A.A., Sokoloff, D.D. 1983, Magnetic Fields in Astrophysics, Gordon And Breach, N.Y. Google Scholar