??????????(SEP)

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(No Transcript)
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3kpc 6x108 AU
http//www.anzwers.org/free/universe/galaxy.html
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6.3 pc 1.2x106 AU
http//antwrp.gsfc.nasa.gov/apod/ap000411.html
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????
6.3 pc 1.2x106 AU
?????? ????? Lynsky et al., 2000
HST ????????? ????????? ???????? ????????? ?????
?????? ??????
From http//casa.colorado.edu/sredfiel/ColoradoLI
C.html
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5x10-6 pc 100 AU
http//spacephysics.ucr.edu/
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??? ? ????
2008? ???????????
???????????? ?????????????????
? ?? mitsuo.oka_at_gmail.com
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??? ????
Diffusive Shock Acceleration
?????????? ???????
???? ??????????????????????????????????????????
????? ???????????????????????????????????????
??????????? ?????
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??????????
Solar Energetic Particles (SEP)
Lee, 2005
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CME????????
Coronal Mass Ejection
Reames et al., 1996
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??????
Chiueh, 1988

• ?????????(?????)
• ????
• ????????
• ??????????? ???????
• ??????????????????

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SEP????????
???

• ????????????DSA???
• ??????????????????

Tsurutani Lin, 1985
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SEP???
Long Duration Events
Impulsive Events
Solar Energetic Particles (SEP)
????????? ?????? ???????????????????????????????
? ?????????????????
?????????? ??????????
Cane et al., 2003
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?????????(??????)

• ???????
• ??????(???)
• MHD????(??)
• ?????????(CME)
• ???
• 1??(??????)
• 2??(????MHD??)
• 3??(????)
• ??(???????????)
• ???
• ????????
• ???????????

Giacalone et al., 2005
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??????
(Giacalone Jokipii,
19941996)

• ???????
• MHD??
• ????????????
• ????ltlt????
• ?????????natural
• ????
• Free-escape boundary
• ???????????

????
15
??????
(Giacalone Jokipii,
19941996)
??? ?????????? ?????
???? 4.8 ?????90
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??????????? ACR

• ???????

Anomalous Cosmic Ray (ACR)
?????
Cronin, 1997
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??????????
Noda, 2000
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?????????

• ????????(0.001/cm3)???????????

Geotail??????????? ?????????(Oka et al.,
2002)
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Voyager 1 ????????

• 2002???(85AU)?????????
  (?MeV)???????????
• Krimigis et al., McDonald et al., Nature vol.426,
  2003
• ???????
• ???????
• (??????????not available)

Burlaga et al., 2003????, 2002?????, 1s??????
0.015 nT B???? 0.041 nT ??????????????
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Voyager 1 ????????

• 2004?12?16?
• Science vol.309, 23 Sep.2005

ACR
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Voyager 2 ????????

• 2007?8?30?
• Nature vol.454, 3 July 2008

ACR
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???????ACR?????
?? Blunt heliosphere Transients Diffusion???????
Decker et al., 2005
McComas and Schwadron, 2006
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?????????

• V2???????????????available
• ????????????????????????

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??????
25
?????????(??????)

• ???????
• ??????(???)
• MHD????(??)
• ?????????(CME)
• ???
• 1??(??????)
• 2??(????MHD??)
• 3??(????)
• ??(???????????)
• ???
• ????????
• ???????????

Giacalone et al., 2005
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???????

• ??????????????
• ????????????????
• ACE,WIND,SOHO,STEREO,Ulysses,Voyager,IBEX
• ??????????????
• ??????????????????????
• ????????(SCOPE, Bepi-Colombo,etc)
• ?????????????????