SPECTROPOLARIMETRY OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc: NEARLY SPHERICAL EXPLOSION OF SUPER-CHANDRASEKHAR MASS WHITE DWARF

@article{Tanaka2009SPECTROPOLARIMETRYOE,
  title={SPECTROPOLARIMETRY OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc: NEARLY SPHERICAL EXPLOSION OF SUPER-CHANDRASEKHAR MASS WHITE DWARF},
  author={Masaomi Tanaka and Koji S. Kawabata and Masayuki Yamanaka and Kei-ichi Maeda and Takashi Hattori and Kentaro Aoki and Ken’ichi Nomoto and Masanori Iye and Toshiyuki Sasaki and Paolo A. Mazzali and Elena Pian},
  journal={The Astrophysical Journal},
  year={2009},
  volume={714},
  pages={1209 - 1216}
}
We present the first spectropolarimetric observations of a candidate of super-Chandrasekhar mass Type Ia supernova (SN): SN 2009dc. The observations were performed at 5.6 and 89.5 days after the B-band maximum. The data taken at the later epoch are used to determine the interstellar polarization. Continuum polarization is found to be small (<0.3%), indicating that the explosion is nearly spherically symmetric. This fact suggests that a very aspherical explosion is not a likely scenario for SN… 

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