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On Detecting the Fourth Gyrofrequency Harmonic in Microwave Emission Spectra above Sunspots by Kaltman, T. I.; Bogod, V. M. is a Physics and Astronomy article available to read on EtoBox.
What is On Detecting the Fourth Gyrofrequency Harmonic in Microwave Emission Spectra above Sunspots about?
Abstract⎯Spectral polarization observations of radio sources above sunspots are regularly carried out with the RATAN-600 radio telescope (RATAN is a Russian acronym for the Radio Astronomical Telescope of the Academy of Sciences). The in-depth studies of the spectra reveal new effects. In this paper, we analyze the manifestation of radio emission of the fourth gyrofrequency harmonic in microwave spectra obtained with 1-percent frequency resolution in a range of 3-18 GHz. Registration of the extraordinary mode in the short-wavelength range of the spectrum is compared to the model calculations of the second-to-fifth gyrofrequency harmonics against a background of the thermal bremsstrahlung emission of flocculi, surrounding the spot structure of an active region. The brightening of the extraordinary mode in the short-wavelength spectral range and the kinks in the intensity spectra of emission are analyzed. The interpretation of the RATAN-600 observational data with probable diagnostics of the emission of the fourth gyrofrequency harmonic is considered as examples.
Who reads On Detecting the Fourth Gyrofrequency Harmonic in Microwave Emission Spectra above Sunspots?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Kaltman, T. I.; Bogod, V. M.
- Publisher
- Springer; Pleiades Publishing; Springer Science and Business Media LLC; Pleiades Publishing Ltd (ISSN 0010-9525)
- Published
- 2019
- Language
- EN
- ISBN
- 9780010952513
- Field
- Physics and Astronomy (Physical Sciences)