INTERBALL-1 Observations of the Kilometric ``Continuum'' of the Earth's Magnetosphere

Details INTERBALL-1 Observations of the Kilometric ``Continuum'' of the Earth's Magnetosphere INTERBALL-1 Observations of the Kilometric ``Continuum'' of the Earth's Magnetosphere

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cosre..42....1k&link_type=abstract

Cosmic Research, v. 42, Issue 1, p. 1-7 (2004).

Physics

1

Scientific paper

The electromagnetic radio-frequency emission of the inner region of the Earth's plasmasphere discovered recently by the GEOTAIL satellite [4] and referred to as the ``kilometric continuum'' was observed by the INTERBALL-1 satellite (1995-2000) in the 100-500 kHz band in the AKR-X experiment. During a period of low solar activity (1995-1997), this ``continuum'' was found leaving the inner plasmasphere at geocentric distances of 2-4RE as isolated pencil-like (1°-6°) beams located in the magnetic equator plane. During a time of high solar activity (1999-2000), the occurrence of the emission was extremely rare (it was observed only at a considerable fall of this activity). If detected, at the same geocentric distances (2-4RE) the ``continuum'' demonstrated a strongly variable and perturbed character, as well as a considerably larger extension of the beam over the geomagnetic latitude (10°-20° and more). In addition, quasi-periodic (QP) signals, similar to the observed QP emissions of Jupiter, were sometimes detected in this period. The probable nature of the observed features of the ``kilometric continuum'' is briefly discussed.

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