Spontaneous emission of Alfvenic fluctuations
- Low-frequency fluctuations are pervasively observed in the solar wind. The present paper theoretically calculates the steady state spectra of low-frequency electromagnetic (EM) fluctuations of the Alfvenic type for thermal equilibrium plasma. The analysis is based upon a recently formulated theory of spontaneously emitted EM fluctuations in magnetized thermal plasmas. It is found that the fluctuations in the magnetosonic mode branch is constant, while the kinetic Alfvenic mode spectrum is dependent on a form factor that is a function of perpendicular wave number. Potential applicability of the present work in the wider context of heliospheric research is also discussed.
| Author details: | P. H. Yoon, R. A. Lopez, Sergei VafinORCiDGND, S. Kim, R. Schlickeiser |
|---|---|
| DOI: | https://doi.org/10.1088/1361-6587/aa77c3 |
| ISSN: | 0741-3335 |
| ISSN: | 1361-6587 |
| Title of parent work (English): | Plasma physics and controlled fusion |
| Publisher: | IOP Publ. Ltd. |
| Place of publishing: | Bristol |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2017 |
| Publication year: | 2017 |
| Release date: | 2020/04/20 |
| Tag: | kinetic Alfven; magnetosonic; spontaneous emission |
| Volume: | 59 |
| Number of pages: | 8 |
| Funding institution: | NSF [AGS1550566]; BK21 plus program from the National Research Foundation (NRF), Korea; GFT, Inc.; CONICyT [74160076]; Ruhr University Deutsche Forschungsgemeinschaft [Schl 201/31-1]; Deutsche Forschungsgesellschaft [Schl 201/32-1] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
