| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Three-Dimensional Explosion Geometry Of Stripped-Envelope Core-Collapse Supernovae. I. Spectropolarimetric Observations |
|
言語 |
en |
| 作成者 |
Tanaka, Masaomi
Kawabata, Koji S.
Hattori, Takashi
Mazzali, Paolo A.
Aoki, Kentaro
Iye, Masanori
Maeda, Keiichi
Nomoto, Ken'ichi
Pian, Elena
Sasaki, Toshiyuki
Yamanaka, Masayuki
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
(c) 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
supernovae: general |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
supernovae: individual (SNe 2009jf, 2009mi) |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
techniques: polarimetric |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
440 |
| 内容記述 |
|
|
内容記述 |
We study the multi-dimensional geometry of supernova (SN) explosions by means of spectropolarimetric observations of stripped-envelope SNe, i.e., SNe without a hydrogen-rich layer. We perform spectropolarimetric observations of two stripped-envelope SNe, Type Ib SN 2009jf and Type Ic SN 2009mi. Both objects show non-zero polarization at the wavelength of the strong lines. They also show a loop in the Stokes Q-U diagram, which indicates a non-axisymmetric, three-dimensional ion distribution in the ejecta. We show that five out of six stripped-envelope SNe, which have been observed spectropolarimetrically so far, show such a loop. This implies that a three-dimensional geometry is common in stripped-envelope SNe. We find that stronger lines tend to show higher polarization. This effect is not related to the geometry, and must be corrected for to compare the polarization of different lines or different objects. Even after the correction, however, there remains a dispersion of polarization degree among different objects. Such a dispersion might be caused by three-dimensional clumpy ion distributions viewed from different directions. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
IOP Publishing Ltd |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1088/0004-637X/754/1/63 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1088/0004-637X/754/1/63 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0004-637X |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00553242 |
| 開始ページ |
|
|
開始ページ |
63 |
| 書誌情報 |
Astrophysical Journal
Astrophysical Journal
巻 754,
号 1,
p. 63,
発行日 2012
|
| 旧ID |
34779 |
AstrophysJ_754_63.pdf (819.0 KB)
