超新星爆発の形状を探る

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(118) q. , + y z { Elena Pian q MPA . 10) Stephenson F. R., Green D. A., 2002, Historical Supernovae and Their Remnants (Clarendon Press, Oxford) 11) Hwang U., et al., 2004, ApJ 615, L117 12) Miceli M., et al., 2006, A&A 453, 567 13) Wang L., et al., 2002, ApJ 579, 671 14) Wang L., Wheeler J. C., 2008, ARA&A 46, 433 15) Ho ¨flich P., 1991, A&A 246, 481 16) ·¸ ¹w

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(121) "°± !. . ῎῍ῑῌ 1) 2) 3) 4) 5) 6) 7) 8) 9). 60. Rampp M., Janka H.-Th., 2000, ApJ 539, L33 Sumiyoshi K., et al., 2005, ApJ 629, 922 ²

(122) ³ 2005, yz´ 98, 461 µ¶ 2009, yz´ 102, 308 Blondin J. M., et al., 2003, ApJ 584, 971 Iwakami W., et al., 2008, ApJ 678, 1207 Takiwaki T., et al., 2004, ApJ 616, 1086 Burrows A., et al., 2007, ApJ 664, 416 Ashword W. B., 1980, Journal for the Historical of Astronomy 11, 1. Probing Explosion Geometry of Supernovae Masaomi TANAKA Department of Astronomy, School of Science, University of Tokyo, 7ῌ3ῌ1 Hongo, Bunkyo-ku, Tokyo 113ῌ0033, Japan Abstract : What is the explosion mechanism of supernovae? Explosion geometry may be an important key to solve this longstanding problem. In this article, we show that spectropolarimetry is a powerful tool to extract the explosion shape from extragalactic, point-source supernovae. Our observations with the Subaru telescope revealed that supernova explosion is not spherically symmetric. Especially, the distribution of explosively synthesized heavy elements is not uniform in the SN ejecta. Three-dimensional structure of the explosion is also becoming apparent.. yz´. 2010 ½ 1 ´.

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