Počet záznamů: 1  

Polar PWI and CEPPAD observations of chorus emissions and radiation belt electron acceleration: Four case studies

  1. 1. 0318719 - UFA-U 2009 RIV GB eng J - Článek v odborném periodiku
    Sigsbee, K. - Menietti, J. D. - Santolík, Ondřej - Blake, J. B.
    Polar PWI and CEPPAD observations of chorus emissions and radiation belt electron acceleration: Four case studies.
    [Pozorování emisí typu chorus a urychlování elektronů v radiačním pásu: čtyři případové studie s využitím pozorování Polar PWI a CEPPAD.]
    Journal of Atmospheric and Solar-Terrestrial Physics. Roč. 70, č. 14 (2008), s. 1774-1788. ISSN 1364-6826
    Grant CEP: GA AV ČR IAA301120601
    Grant ostatní:NASA(US) NNG05GM52G; NSF(US) 0307319
    Výzkumný záměr: CEZ:AV0Z30420517
    Klíčová slova: chorus * outer radiation belt
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
    Impakt faktor: 1.667, rok: 2008

    We investigated the role of whistler-mode chorus in accelerating outer radiation belt electrons during four moderate geomagnetic storms when data from the Polar Plasma Wave Investigation (PWI) were available. The storm time periods we examined included two storms associated with coronal mass ejections (CMEs), the well-studied January 10–13, 1997 International Solar Terrestrial Physics event and the May 12–15, 1997 event. We compared these two storms with two geomagnetically active periods that were not associated with CMEs. Although strong chorus emissions were observed during all four events, the association of electron acceleration with chorus emissions is not clear. During all four events, the Polar Comprehensive Energetic Particle and Pitch Angle Distribution (CEPPAD) experiment observed increases in the fluxes of energetic electrons (0.8 < E < 6.4MeV). The two events associated with CMEs featured a sudden increase in the electron fluxes above 0.8MeV (probable the impact of the CME shock wave).

    Byla prozkoumána role emisí typu chorus pro urychlování elektronů ve vnějším radiačním pásu.
    Trvalý link: http://hdl.handle.net/11104/0168052