Chorus observations by the Polar spacecraft near the mid-altitude cusp

0332628 - ÚFA 2010 RIV US eng J - Journal Article
Menietti, J. D. - Santolík, Ondřej - Abaci, P. C.
Chorus observations by the Polar spacecraft near the mid-altitude cusp.
[Pozorování emisí typu chorus na družici Polar v blízkosti cuspu ve středních výškách.]
Planetary and Space Science. Roč. 57, č. 12 (2009), s. 1412-1418. ISSN 0032-0633. E-ISSN 1873-5088
R&D Projects: GA AV ČR IAA301120601
Grant - others:NSF(US) ATM-04-43531; NASA(US) NNG05GM52G.; GA MŠk(CZ) ME 842
Institutional research plan: CEZ:AV0Z30420517
Keywords : chorus * mid-altitude cusp * Polar spacecraft
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 2.067, year: 2009

Observations of whistler-mode emission, including chorus, were made frequently by mid-altitude satellites such as Polar. In this study we examine an example of such emission when the high-frequency waveform receiver on board Polar was operating allowing direction-finding and polarization measurements in the low-altitude cusp. The results reveal at least two and possibly three distinct groups of narrow-banded chorus emission with a primary source region at the magnetic equator. The groups include emission propagating near the resonance cone angle, emission propagating along a density duct, and possibly emission reflected from the low-altitude cusp. The results indicate that the mid- and low-altitude cusp, perhaps unlike the high-altitude cusp, is not a significant source of narrowband chorus emission.

Článek se zabývá pozorováním emisí typu chorus na družici Polar v blízkosti cuspu ve středních výškách.
Permanent Link: http://hdl.handle.net/11104/0177835