Subaru spectropolarimetry of supernovae

Masaomi Tanaka, Koji S. Kawabata, Takashi Hattori, Kentaro Aoki, Masanori Iye, Keiichi Maeda, Paolo A. Mazzali, Ken'ichi Nomoto, Elena Pian, Toshiyuki Sasaki, Masayuki Yamanaka

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Spectropolarimetry is one of the most powerful methods to study the multi-dimensional geometry of extragalactic supernovae (SNe). We have performed spectropolarimetric observations of Type Ib/c SNe with the Subaru telescope. The data clearly show the "loop" in the Stokes Q - U plane. By performing 3D radiative transfer simulations, we show that the loop is clear evidence for 3D, non-axisymmetric geometry of SNe. We also summarize the properties of the line polarization of Type Ib/c SNe. We find that a stronger line tends to show a higher line polarization. This effect must be corrected to compare the polarization of different lines or different objects.

Original languageEnglish
Title of host publicationStellar Polarimetry
Subtitle of host publicationFrom Birth to Death
Number of pages4
Publication statusPublished - 2012
EventStellar Polarimetry: From Birth to Death - Madison, WI, United States
Duration: 2011 Jun 272011 Jun 30

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceStellar Polarimetry: From Birth to Death
Country/TerritoryUnited States
CityMadison, WI


  • nucleosynthesis
  • polarization
  • radiative transfer
  • supernovae


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