Abstract
The formation of cyclotron maser emission lines in a non-uniform (regular or random) magnetic field is studied. In the presence of sufficiently small inhomogeneity, the line shape can be described by a broadened Gaussian profile. In the case of stronger inhomogeneity, the initial Gaussian profile splits into two Gaussian components, which could be observationally perceived as “harmonics.” A relation between the distribution of local magnetic trap sizes and the distribution of the spectral widths of solar radio spikes is derived. Possible applications of the results to the interpretation of solar radio spikes and related problems are discussed.
Similar content being viewed by others
References
C. S. Wu, Space Sci. Rev. 41, 215 (1985).
B. P. Ryabov and N. N. Gerasimova, Decameter Sporadic Radio Emission of Jupiter [in Russian] (Naukova Dumka, Kiev, 1990).
T. S. Bastian, J. Bookbinder, G. A. Dulk, and M. Davis, Astrophys. J. 353, 265 (1990).
G. D. Fleishman and V. F. Mel'nikov, Usp. Fiz. Nauk 168, 1265 (1998) [Phys. Usp. 41, 1157 (1998)].
M. Stahli and A. Magun, Sol. Phys. 104, 117 (1986).
A. Csillaghy and A. O. Benz, Astron. Astrophys. 274, 487 (1993).
M. Karlicky, M. Sobotka, and K. Jiricka, Sol. Phys. 168, 375 (1996).
Plasma Electrodynamics, Ed. by A. I. Akhiezer et al. (Nauka, Moscow, 1974; Pergamon, Oxford, 1975).
A. F. Aleksandrov, L. S. Bogdankevich, and A. A. Rukhadze, Principles of Plasma Electrocdynamics (Vysshaya Shkola, Moscow, 1978; Springer-Verlag, Berlin, 1984).
D. B. Melrose and G. A. Dulk, Astrophys. J. 259, 844 (1982).
R. R. Sharma and L. Vlahos, Astrophys. J. 280, 405 (1984).
R. R. Winglee and G. A. Dulk, Sol. Phys. 104, 93 (1986).
H. W. Li, Sol. Phys. 104, 131 (1986).
P. Louarn, D. Le Queau, and A. Roux, Sol. Phys. 111, 201 (1987).
D. B. Melrose, R. G. Hewitt, and G. A. Dulk, J. Geophys. Res. 89, 897 (1984).
M. J. Aschwanden and A. O. Benz, Astrophys. J. 332, 447 (1988).
M. J. Aschwanden, Astron. Astrophys., Suppl. Ser. 85, 1141 (1990).
G. D. Fleishman and S. G. Yastrebov, Astron. Zh. 71, 531 (1994) [Astron. Rep. 38, 468 (1994)].
G. D. Fleishman and S. G. Yastrebov, Sol. Phys. 153, 389 (1994).
V. G. Ledenev, Sol. Phys. 179, 405 (1998).
G. D. Fleishman and S. G. Yastrebov, Sol. Phys. 154, 361 (1994).
M. I. Fedoryuk, The Saddle-Point Method [in Russian] (Nauka, Moscow, 1977).
M. Gudel, Astron. Astrophys. 239, L1 (1990).
S. Krucker and A. O. Benz, Astron. Astrophys. 285, 1038 (1994).
Author information
Authors and Affiliations
Additional information
__________
Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 78, No. 3, 2001, pp. 238–247.
Original Russian Text Copyright © 2001 by Platonov, Fleishman.
Rights and permissions
About this article
Cite this article
Platonov, K.Y., Fleishman, G.D. Broadening of electron cyclotron maser emission lines in a nonuniform magnetic field. Astron. Rep. 45, 203–211 (2001). https://doi.org/10.1134/1.1353360
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1353360