宇宙磁場解析における QU- tting - astro- ??した光が磁場中を通過するとその偏光面が回転するのである。この現象を応用

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  • 2015 45

    QU-fitting

    ( )

    Abstract

    FDF FDF

    QU-fittingQU-fitting

    1 Introduction

    = 0 +RM2 (1)

    0

    RM(Rotation Mea-

    sure)

    RM = 0.81

    0l

    ( necm3

    )(BG

    )(dr

    pc

    )(2)

    ne B

    dr

    RM

    RM

    RM

    RM

    Burn

    QU

    P = Q+ iU (3)

  • 2015 45

    r RM (r)

    P (2) =

    F ()e2i2

    d (4)

    F () (Faraday dispar-

    sion function) FDF

    FDF

    (4)

    F () =1

    2

    P (2)e2i2

    d2 (5)

    P (2)(5)

    FDF

    FDF

    2 QU-fittng

    QU-fittingQU-fiitng

    (MCMC) FDF

    QU-Fittng

    FDF

    AICBIC

    3 Results and Discussion

    QU-fitting

    2

    FDF

    FDFQU-fittingFDF

    FDF

    1

    Amp1 = 25.001 = 37.8401 = 0()2 Amp2 = 16.72 = 103.18

    02 = 36()Amp0

    QU-fitting

    QU-fitting

    MCMC 100,000

    4 Conclusion

  • 2015 45

    1: Amp1

    2: 1

    3: 01

    n

    QU-fitting

    4: Amp2

    5: 2

    6: 02

    QU-fitting

  • 2015 45

    FDF

    AIC

    BIC

    Acknowledgement

    (YITP-W-15-04 )

    Reference

    Brentjens, M. A., & de Bruyn, A. G. 2005, A&A, 441,1217

    Ideguchi, S., Tashiro, Y.,Akahori, T., Takahashi, K., &Ryu, D. 2014 ApJ 792 51

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