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He10830AHanle

2. Outline. ????Zeeman???Hanle??Hanle??????????Atomic level polarizationHanle??Van Vleck angle??HeI??????????????????????. Hanle????????????????????????????????. 3. Zeeman???????. ?????J=1?????3???????????????????????????????????????????????? ? ???????????????????????. . J=1. J=0. B=0. B?0.

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He10830AHanle

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    1. 1 He10830A????Hanle/Zeeman ???????????? ???? (NAOJ)

    2. 2 Outline ????Zeeman???Hanle?? Hanle?????????? Atomic level polarization Hanle?? Van Vleck angle?? HeI???????? ??????????? ???

    3. 3 Zeeman??????? ?????J=1?????3?????????????????????? ?????????????????????????? ? ???????????????????????

    4. 4 Zeeman?? Longitudinal Zeeman effect ???????sensitive ??????????????????????(?????????) Transverse Zeeman effect ???????????sensitive ????(B<100G)???????????

    5. 5 Zeeman???Hanle?? (or atomic level polarization) Zeeman????????????????????(?????)?????????????? ? ? 2??? ???????????????????????????(??transverse Zeeman effect????)? ?????: 100G?? ?????: ?100G?? ??????????????????????????????????????????????????????????

    6. 6 Hanle?????? Zeeman????????????????????????????? ????????????(??????)??? Hanle????????? > Natural broadening (????????) He I 10830A??~0.8G

    7. 7 Hanle????? ???????????????????? ????????????????????????????????????

    8. 8 ???? "Polarization in Spectral Lines" by E. Landi Degl'Innocenti and M. Landolfi "Advanced Forward Modeling and Inversion of Stokes Profiles Resulting from the Joint Action of the Hanle and Zeeman Effects" Asensio Ramos, Trujillo Bueno, and Landi Degl'Innocenti, 2008, ApJ, 683, 542

    9. 9 ???? ?????????s=1??????????|s, sz> 2?????????? |1, 1> (???????) |1,-1> (???????) ????z????? = ??????

    10. 10 ???????? ??? (Stokes V) +V -V ???? (Stokes Q) +Q -Q ???? (Stokes U) +U -U

    11. 11 ??? ?M=0, ±1?????????? ????????????????????1????????

    12. 12 ??????(1) ????????????? ??????????????? ??????????????????

    13. 13 ??????(2)

    14. 14 Atomic level polarization (1) 2?????????????????? ????????????????????

    15. 15 Atomic level polarization (2) ?????????????????

    16. 16 ???????????? (1) ??????????????????????????????? ????????????????????

    17. 17 ???????????? (2) ????????????????????

    18. 18 ???????????? (3) ????????????????? ???????X????????Z?

    19. 19 ???????????? (4) ????????????????? ???????X????????Z?

    20. 20 He 10830A ???

    21. 21 He 10830A????????

    22. 22 HAZEL???????

    23. 23 Van-Vleck angle ????????????????????????????population balance?????? ???????atomic level polarization???????????

    24. 24 Van-Vleck ambiguity

    25. 25 ????????

    26. 26 Hanle????????? ???????????????????Hanle??????????? ???????? (??????????)????????(natural broadening)???????????????? ?????Bcrit???????????Hanle?????depolarization/ polarization??????????? Saturation??? Saturation?????????????????????????????????????????? Zeeman?????Stokes V??????????Bz???? Hanle????????????B???? ??????????B = Bz/cos?B

    27. 27 He I ????Hanle??????? HAZEL (HAnle and ZEeman Light) IAC?Trujillo Bueno?Asensio Ramos??????? ?????? ????????????? ???????: h ?????: t He I (triplet system)??????? ????????????????????????????????????????????????source function (emission)????? Collision?????

    28. 28 ???????

    29. 29 ????? ??????UV????????????He I triplet system?????????? Stokes I???? (or ???)?????

    30. 30 ??????

    31. 31 ?????????

    32. 32 HAZEL?????????

    33. 33 HAZEL?????? Trujillo Bueno and Asensio Ramos, 2007, ApJ, 655, 642

    34. 34 HAZEL??? (Katsukawa et al. 2009)

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