Polarization of Pc 1 and IPDP pulsations correlated with particle precipitation

Journal Article · Sat Dec 01 04:00:00 EST 1979 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA084iA12p07091· OSTI ID:5485277

Arnoldy, R L; Lewis, Jr, P B; Cahill, Jr, L J

The correlation of Pc 1 and IPDP pulsations with particle precipitation shows that the waves are left (L) polarized when observed simultaneously with precipitation. This is consistent with theoretical understanding of the generation of the pulsations as an L wave in the magnetosphere and the L wave propagation through the ionosphere with horizontal ducting of the R wave. It is suggested that L polarization of Pc 1 and IPDP locates the ULF source field line. Three events studied were IPDP correlated with riometer absorption. The observations strongly support the inward convecting source model for the generation of IPDP. On the other hand, the origin of the particles (presumably electrons) responsible for the riometer absorption is still an open question. Finally, a very long duration Pc 1 (HM emission) event is presented where L polarized wave packets were very closely correlated with auroral light bursts measured at 4278 A wavelength.

• Research Organization: Space Science Center, University of New Hampshire, Durham, New Hampshire 03824
• OSTI ID: 5485277
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 84:A12; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAE
CHARGED-PARTICLE PRECIPITATION
EARTH ATMOSPHERE
MAGNETOSPHERE
MEASURING INSTRUMENTS
POLARIZATION
PULSATIONS
RIOMETERS
WAVE PROPAGATION