Sky-distribution of intensity of synchrotron radio emission of relativistic electrons trapped in Earth’s magnetic field-Reference-Cited by-同舟云学术

Sky-distribution of intensity of synchrotron radio emission of relativistic electrons trapped in Earth’s magnetic field

Published:2017-12-27 Issue:4 Volume:3 Page:34-46
ISSN:2412-4737
Container-title:Solnechno-Zemnaya Fizika
language:en
Short-container-title:

Author:

Клименко Владимир¹,Klimenko Vladimir²

Affiliation:

1. Институт прикладной физики РАН

2. Institute of Applied Physics RAS

Abstract

This paper presents the calculations of synchrotron radio emission intensity from Van Allen belts with Gaussian space distribution of electron density across L-shells of a dipole magnetic field, and with Maxwell’s relativistic electron energy distribution. The results of these calculations come to a good agreement with measurements of the synchrotron emission intensity of the artificial radiation belt’s electrons during the Starfish nuclear test. We have obtained two-dimensional distributions of radio brightness in azimuth — zenith angle coordinates for an observer on Earth’s surface. The westside and eastside intensity maxima exceed several times the maximum level of emission in the meridian plane. We have also constructed two-dimensional distributions of the radio emission intensity in decibels related to the background galactic radio noise level. Isotropic fluxes of relativistic electrons (E ~ 1 MeV) should be more than 107 cm–2s–1 for the synchrotron emission intensity in the meridian plane to exceed the cosmic noise level by 0.1 dB (riometer sensitivity threshold).

Publisher

Infra-M Academic Publishing House

Subject

Space and Planetary Science,Atmospheric Science,Geophysics

Reference30 articles.

1. Аллен К.У. Астрофизические величины. М.: Мир, 1977. 448 с., Allen C.W. Astrofizicheskie velichiny [Astrophysical quantities]. Moscow: Mir Publ., 1977. 448 p. (In Russian). English edition: Allen C.W. Astrophysical quantities. University of London. The Athlon Press. 1973. 448 p.

2. Астрономический календарь. Постоянная часть. М.: Наука, 1981. 704 c., Astronomicheskii kalendar. Postoyannaya chast. [Astronomical Calendar. Basic Part]. Moscow: Nauka Publ., 1981. 704 p. (In Russian)

3. Вернов С.Н., Горчаков Е.В., Кузнецов С.Н. и др. Потоки частиц во внешнем геомагнитном поле // Физика магнитосферы / Под ред. Д Вильямса и Дж. Мида. М.: Мир, 1972. С. 318–344., Borovsky J.E., Cayton T.E., Denton M.H., Belian R.D., Christensen R.A., Ingraham J.C. The proton and electron radiation belts at geosynchronous orbit: Statistics and behavior during high-speed stream-driven storms. J. Geophys. Res.: Space Phys. 2016, vol. 121, pp. 5449–5488.

4. Гинзбург В.Л., Сыроватский С.И. Космическое магнито-тормозное (синхротронное) излучение // УФН. 1965. Т. 87, вып. 1. С. 65–111., Chivers H.J.A., Wells H.W. Observations of unusual radiofrequency noise emission and absorption at 80 Mc/s. J. Atmosph. Terr. Phys. 1959, vol. 17, pp. 13–19.

5. Дриацкий В.М. Природа аномального поглощения космического радиоизлучения в нижней ионосфере высоких широт. Л.: Гидрометеоиздат, 1974. 224 с., Detrick D.L., Rosenberg T.J. A phased-array radiowave imager for studies of cosmic noise absorption. Radio Sci. 1990, vol. 25, no. 4, pp. 325–338.