Identifying the source region of plasmaspheric hiss

0445231 - ÚFA 2016 RIV US eng J - Článek v odborném periodiku
Laakso, H. - Santolík, Ondřej - Horne, R. - Kolmašová, Ivana - Escoubet, P. - Masson, A. - Taylor, P.
Identifying the source region of plasmaspheric hiss.
Geophysical Research Letters. Roč. 42, č. 9 (2015), s. 3141-3149. ISSN 0094-8276. E-ISSN 1944-8007
Grant CEP: GA MŠMT LH12231
Institucionální podpora: RVO:68378289
Klíčová slova: plasmaspheric hiss * plasmaspheric drainage plumes * plasmasphere * equatorial region of plumes
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 4.212, rok: 2015
http://onlinelibrary.wiley.com/doi/10.1002/2015GL063755/full

The presence of the plasmaspheric hiss emission around the Earth has been known for more than 50 years, but its origin has remained unknown in terms of source location and mechanism. The hiss, made of whistler mode waves, exists for most of the time in the plasmasphere and is believed to control the radiation belt surrounding the Earth which makes its understanding very important. This paper presents direct observational evidence that the plasmaspheric hiss originates in the equatorial region of the plasmaspheric drainage plumes. It shows that the emissions propagate along the magnetic field lines and away from the equator in the plumes but toward the equator at lower L shells inside the plasmasphere. The observations also suggest that the hiss waves inside the plasmasphere are absorbed as they cross the equator.
Trvalý link: http://hdl.handle.net/11104/0247585