Spectropolarimetry of type Ibc supernovae

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

doi:10.1017/S1743921312012823

Spectropolarimetry of type Ibc supernovae

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Studying a multi-dimensional structure of supernovae (SNe) gives important constraints on the mechanism of the SN explosion. Polarization measurement is one of the most powerful methods to study the explosion geometry of extragalactic SNe. Especially, Type Ib/c SNe are the ideal targets because the core of the explosion is bare. We have performed spectropolarimetric observations of Type Ib/c SNe with the Subaru telescope. We detect a rotation of the polarization angle across the line, which is seen as a loop in the Q-U plane. This indicates that axisymmetry is broken in the SN ejecta. Adding our new data to the sample of stripped-envelope SNe with high-quality spectropolarimetric data, five SNe out of six show a loop in the Q-U plane. This implies that the SN explosion commonly has a non-axisymmetric, three-dimensional geometry.

Original language	English
Title of host publication	Death of Massive Stars
Subtitle of host publication	Supernovae and Gamma-Ray Bursts
Editors	Peter W. A. San Antonio, Nobuyuki Kawai, Elena Pian
Pages	138-141
Number of pages	4
Edition	S279
DOIs	https://doi.org/10.1017/S1743921312012823
Publication status	Published - 2011 Apr
Externally published	Yes

Publication series

Name	Proceedings of the International Astronomical Union
Number	S279
Volume	7
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

Keywords

supernovae: general
techniques: polarimetric

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1017/S1743921312012823

Cite this

Tanaka, M., Kawabata, K. S., Hattori, T., Mazzali, P. A., Aoki, K., Iye, M., Maeda, K., Nomoto, KI., Pian, E., Sasaki, T., & Yamanaka, M. (2011). Spectropolarimetry of type Ibc supernovae. In P. W. A. San Antonio, N. Kawai, & E. Pian (Eds.), Death of Massive Stars: Supernovae and Gamma-Ray Bursts (S279 ed., pp. 138-141). (Proceedings of the International Astronomical Union; Vol. 7, No. S279). https://doi.org/10.1017/S1743921312012823

Spectropolarimetry of type Ibc supernovae. / Tanaka, Masaomi; Kawabata, Koji S.; Hattori, Takashi et al.
Death of Massive Stars: Supernovae and Gamma-Ray Bursts. ed. / Peter W. A. San Antonio; Nobuyuki Kawai; Elena Pian. S279. ed. 2011. p. 138-141 (Proceedings of the International Astronomical Union; Vol. 7, No. S279).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Tanaka, M, Kawabata, KS, Hattori, T, Mazzali, PA, Aoki, K, Iye, M, Maeda, K, Nomoto, KI, Pian, E, Sasaki, T & Yamanaka, M 2011, Spectropolarimetry of type Ibc supernovae. in PWA San Antonio, N Kawai & E Pian (eds), Death of Massive Stars: Supernovae and Gamma-Ray Bursts. S279 edn, Proceedings of the International Astronomical Union, no. S279, vol. 7, pp. 138-141. https://doi.org/10.1017/S1743921312012823

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abstract = "Studying a multi-dimensional structure of supernovae (SNe) gives important constraints on the mechanism of the SN explosion. Polarization measurement is one of the most powerful methods to study the explosion geometry of extragalactic SNe. Especially, Type Ib/c SNe are the ideal targets because the core of the explosion is bare. We have performed spectropolarimetric observations of Type Ib/c SNe with the Subaru telescope. We detect a rotation of the polarization angle across the line, which is seen as a loop in the Q-U plane. This indicates that axisymmetry is broken in the SN ejecta. Adding our new data to the sample of stripped-envelope SNe with high-quality spectropolarimetric data, five SNe out of six show a loop in the Q-U plane. This implies that the SN explosion commonly has a non-axisymmetric, three-dimensional geometry.",

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author = "Masaomi Tanaka and Kawabata, {Koji S.} and Takashi Hattori and Mazzali, {Paolo A.} and Kentaro Aoki and Masanori Iye and Keiichi Maeda and Ken'Ichi Nomoto and Elena Pian and Toshiyuki Sasaki and Masayuki Yamanaka",

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AU - Mazzali, Paolo A.

AU - Aoki, Kentaro

AU - Iye, Masanori

AU - Maeda, Keiichi

AU - Nomoto, Ken'Ichi

AU - Pian, Elena

AU - Sasaki, Toshiyuki

AU - Yamanaka, Masayuki

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N2 - Studying a multi-dimensional structure of supernovae (SNe) gives important constraints on the mechanism of the SN explosion. Polarization measurement is one of the most powerful methods to study the explosion geometry of extragalactic SNe. Especially, Type Ib/c SNe are the ideal targets because the core of the explosion is bare. We have performed spectropolarimetric observations of Type Ib/c SNe with the Subaru telescope. We detect a rotation of the polarization angle across the line, which is seen as a loop in the Q-U plane. This indicates that axisymmetry is broken in the SN ejecta. Adding our new data to the sample of stripped-envelope SNe with high-quality spectropolarimetric data, five SNe out of six show a loop in the Q-U plane. This implies that the SN explosion commonly has a non-axisymmetric, three-dimensional geometry.

AB - Studying a multi-dimensional structure of supernovae (SNe) gives important constraints on the mechanism of the SN explosion. Polarization measurement is one of the most powerful methods to study the explosion geometry of extragalactic SNe. Especially, Type Ib/c SNe are the ideal targets because the core of the explosion is bare. We have performed spectropolarimetric observations of Type Ib/c SNe with the Subaru telescope. We detect a rotation of the polarization angle across the line, which is seen as a loop in the Q-U plane. This indicates that axisymmetry is broken in the SN ejecta. Adding our new data to the sample of stripped-envelope SNe with high-quality spectropolarimetric data, five SNe out of six show a loop in the Q-U plane. This implies that the SN explosion commonly has a non-axisymmetric, three-dimensional geometry.

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Spectropolarimetry of type Ibc supernovae

Abstract

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Keywords

ASJC Scopus subject areas

UN SDGs

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