Hostname: page-component-77c89778f8-gq7q9 Total loading time: 0 Render date: 2024-07-21T10:29:34.521Z Has data issue: false hasContentIssue false
  • English
  • Français

Masers and Stellar Magnetic Fields

Published online by Cambridge University Press:  19 July 2016

Mark J. Reid
Mark J. Reid*
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden Street Cambridge, Massachusetts 02188

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Observations of circular polarization of molecular masers associated with late type giant and supergiant stars can be used to estimate the magnetic field strength in the masing region. Magnetic field strengths of ~ 5 mG are deduced for OH masers in circumstellar envelopes at distances of ~ 1016 cm from the star, and magnetic field strengths of ~ 50 G are deduced for SiO masers that reside above the photosphere. Extrapolation to the stellar photosphere suggests that average surface magnetic fields are on the order of 103 G.

Type
1. A Survey of Magnetic Phenomena near the Solar Photosphere, in the Corona, and in Stellar Winds
Information
Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 21 - 25
Copyright
Copyright © Kluwer 1990 

References

Barvainis, R. and Deguchi, S. 1989, Astron. J. , 97, 1089.Google Scholar
Barvainis, R., McIntosh, G., and Predmore, C. R. 1987, Nature , 329, 613.Google Scholar
Booth, R. S., Kus, A. J., Norris, R. P., and Porter, N. D. 1981, Nature , 290, 382.Google Scholar
Borra, E. F., Landstreet, J. D., and Mestel, L. 1982, Ann. Rev. Astron. Astrophys. , 20, 191.Google Scholar
Cohen, R. J., Downs, G., Emerson, R., Grimm, M., Gulkis, S., Stevens, G., and Tarter, J. 1987, M.N.R.A.S. , 225, 491.CrossRefGoogle Scholar
Hinkle, K. H., Hall, D. N. B., and Ridgway, S. T. 1982, Ap. J. , 252, 697.Google Scholar
Marcy, G. W. 1984, Ap. J. , 276, 286.Google Scholar
Moran, J. M., Ball, J. A., Predmore, C. R., Lane, A. P., Huguenin, G. R., Reid, M. J., and Hansen, S. S. 1979, Ap. J. (Lett.) , 231, L67.CrossRefGoogle Scholar
Mutel, R. L., Fix, J. D., Benson, J. M., and Webber, J. C. 1979 Ap. J. , 228, 771.Google Scholar
Reid, M. J. and Dickinson, D. F. 1976, Ap. J. , 209, 505.Google Scholar
Reid, M. J., Muhleman, D. O., Moran, J. M., Johnston, K. J., and Schwartz, P. R. 1977, Ap. J. , 214, 60.Google Scholar
Reid, M. J., Moran, J. M., Leach, R. W., Ball, J. A., Johnston, K. J., Spencer, J. H., and Swenson, G. W. 1979, Ap. J. (Lett) , 227, L89.Google Scholar
Reid, M. J. and Moran, J. M. 1981, Ann. Rev. Astron. Astrophys. , 19, 231.Google Scholar
Schultz, G. V., Sherwood, W. A., and Winnberg, A. 1978, Astron. Astrophys. (Lett.) , 63, L5.Google Scholar
Willson, L. A. and Hill, S. J. 1979, Ap. J. , 228, 854.Google Scholar