Эффекты магнитного пересоединения в Токовом Слое

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Эффекты магнитного пересоединения в Токовом Слое ближнего хвоста по данным спутников Cluster и DSP. Григоренко Е.Е.1, Зеленый Л.М.1, Колева Р.2, Сово Ж.-А.3 1 Институт космических исследований РАН, Москва, Россия 2 ИКСИ БАН, София, Болгария 3 IRAP , Тулуза, Франция. - PowerPoint PPT Presentation

Text of Эффекты магнитного пересоединения в Токовом Слое

  • Cluster DSP. ..1, ..1, .2, .-.3

    1 , , 2 , , 3IRAP, ,

  • . : X-: (+BZ) , (BBFs) : Bz

    (Baumjohann et al., 1989;1999; Angelopoulos et al., 1992; Sergeev et al., 1993; 2003; Nagai et al., 1998; Petrukovich et al., 1998; Nagai et al., 2001; Runov et al., 2003 ..) BY

  • Cluster and DSP at close YCluster: , VX ~ -500 / BZ < 0

    DSP: , VX ~ 900 / BZ > 0 Cluster DSP Y- (Y < 1 Re)

  • Cluster :Y ~ 0.2 Re; Z ~ 0.13 Re YZ ~ 300

  • BY. X- BY, , (Nagai et al., 2001;2003;Runov et al., 2003)

  • ().: ( ) BX/ZL ~ 2ZBX0/BXBX0 (5 )Z - ; BX ~ 0.1 Re(Runov et al., 2002; Nakamura et al., 2002; Sergeev et al., 2003)

  • , CLUSTERIIIIII

  • - - - .

  • , . Cluster-1.Cluster-1 and -4 (bad data) are closest to the NS.Cl-1 03:43:05 UT

    03:47:26 UT 03:49:55 UT. , .

  • BX , , . . ~ 2.5 .

  • Cluster-1 and -3 observations.~03:43:30 03:47:10 UT: s/c . ~03:47:10 03:48:15 UT s/c , , ~03:48:15 03:50 UT Cl-1 , , Cl-3, - ! Cl-3 Cl-1 ( ~ 03:49:46 UT), .

  • . RAPID Cluster-1.

  • GSE components of perpendicular velocity measured by HIA onboard Cluster-1,3 andGSE components of E x B measured by EFW onboard Cluster-1,2,3.

    No data for Cluster-4!

  • DSPParallel flow in PSperpendicular flow closer toNS ~ 03:43:30 UT, ~30 , Cluster.

    (X-) X ~ -14 -16 Re.

    .DSP 2 : VX 1000 /

  • .FCCPBQBLCDSP

  • PBQFCC10 nTBLC PBQ FCC ( DSP) ~ 10 .

    H - BLC ( )- 5

  • Cluster-1 and DSP observations.Before 03:44 UT - no acceleration.Delay in flow observations by Cluster and DSP according to velocity distribution functions~ 5 30 s. This corresponds to X-line located at X = - 14 - -18 Re DSP stops toObserve parallel flow at 03:50 UT.

    Cl-1 stops to observe perpendicular flow at 03:51:10

    Cl-3 stops to observe perpendicular flowat 03:49:46Duration ~ 7 min

  • X-line between Cluster and DSPreconnection at PS MF lines?After 03:51 UT (strong accelerated flows disappear)Cl in the southern PS: bi-directiondistribution + some earthward parallel flow

  • After o3:59 UT strong earthward parallel flow starts to be observed in southern PS.

  • Cluster DSP :

    X~ -14 - -16 Re : - ( ~ 0.1 Re) - - BY (1-2 ).

    : - , .