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y#&P¨k 'nO¬­J®8J῎῍῏ῌ1) Haschick A. D., Baan W., 1990, ApJ 355, 232) Nakai N., Inoue M., Miyoshi M., 1993, Nature 361, 453) ¯°±² 1995, ³* 88, 2854) Miyoshi M., et al., 1995, Nature 373, 1275) Yamauchi A., et al., 2005, PASJ 57, 861
6) Maoz E., McKee C. F., 1998, ApJ 494, 2187) Hashick A. D., Baan W., Peng E. W., 1994, ApJ 437,
L358) Nakai N., et al., 1995, PASJ 47, 7719) Herrnstein J. R., et al., 1999, Nature 400, 539

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