Počet záznamů: 1

MESSENGER Observations of Extreme Loading and Unloading of Mercury's Magnetic Tail

  1. 1.
    0356503 - ASU-R 2011 RIV US eng J - Článek v odborném periodiku
    Slavin, J.A. - Andreson, B.J. - Baker, D. N. - Benna, M. - Boardsen, S.A. - Gloeckler, G. - Gold, R.E. - Ho, G.C. - Korth, H. - Krimigis, S.M. - McNutt, Jr., R.L. - Nittler, L.R. - Raines, J.M. - Sarantos, M. - Schriver, D. - Solomon, S.C. - Starr, R.D. - Trávníček, Pavel M. - Zurbuchen, T.H.
    MESSENGER Observations of Extreme Loading and Unloading of Mercury's Magnetic Tail.
    Science. Roč. 329, č. 5992 (2010), s. 665-668 ISSN 0036-8075
    Výzkumný záměr: CEZ:AV0Z10030501
    Klíčová slova: solar-wind * magnetosphere * substorms
    Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
    Impakt faktor: 31.364, rok: 2010

    During MESSENGER's third flyby of Mercury, the magnetic field in the planet's magnetic tail increased by factors of 2 to 3.5 over intervals of 2 to 3 minutes. Magnetospheric substorms at Earth are powered by similar tail loading, but the amplitude is lower by a factor of similar to 10 and typical durations are similar to 1 hour. The extreme tail loading observed at Mercury implies that the relative intensity of substorms must be much larger than at Earth. The correspondence between the duration of tail field enhancements and the characteristic time for the Dungey cycle, which describes plasma circulation through Mercury's magnetosphere, suggests that such circulation determines the substorm time scale. A key aspect of tail unloading during terrestrial substorms is the acceleration of energetic charged particles, but no acceleration signatures were seen during the MESSENGER flyby
    Trvalý link: http://hdl.handle.net/11104/0195007