| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2025-01-21 |
| タイトル |
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タイトル |
Magnetic-field structure of the Crab pulsar wind nebula revealed with IXPE |
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言語 |
en |
| 作成者 |
Mizuno, Tsunefumi
Ohno, Hiroshi
Watanabe, Eri
Bucciantini , Niccolò
Gunji, Shuichi
Shibata, Sinpei
Slane, Patrick
Weisskopf, Martin C.
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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言語 |
en |
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権利情報 |
This is a pre-copyedited, author-produced version of an article accepted for publication in Publications of the Astronomical Society of Japan following peer review. The version of record Tsunefumi Mizuno, Hiroshi Ohno, Eri Watanabe, Niccolò Bucciantini, Shuichi Gunji, Sinpei Shibata, Patrick Slane, Martin C Weisskopf, Magnetic-field structure of the Crab pulsar wind nebula revealed with IXPE, Publications of the Astronomical Society of Japan, Volume 75, Issue 6, December 2023, Pages 1298–1310 is available online at: https://doi.org/10.1093/pasj/psad070. |
| 権利情報 |
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言語 |
en |
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権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
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言語 |
ja |
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権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 内容記述 |
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内容記述 |
We report a detailed study of the magnetic-field structure of the Crab pulsar wind nebula, using the X-ray polarization data in 2–8 keV obtained with the Imaging X-ray Polarimetry Explorer. Contamination of the data for the nebula region by the pulsar emission was removed through application of a stringent pulsation phase cut, extracting a phase range of 0.7–1.0 only. We found that the electric-field vector polarization angle (PA) was about 130○ from north to east with a polarization degree (PD) of about 25% at the pulsar position, indicating that the direction of the toroidal magnetic field is perpendicular to the pulsar spin axis in the region close to the termination shock. The PA gradually deviated from the angle as an increasing function of the distance from the pulsar. There was a region of low PD to the west of the X-ray torus. Although such a region is expected to be located at the torus edge, where geometrical depolarization due to a steep spatial variation of the PA is expected, the observed low-PD region positionally deviated from the edge. We found that the region of low PD positionally coincided with a dense filament seen in the optical band, and conjecture that the low-PD region may be produced through deflection of the pulsar wind. By comparing the values of the PD at the pulsar position between the data and a model, in which toroidal and turbulent magnetic fields were considered, we estimated the fractional energy of the turbulent magnetic field to be about 23 of the total. We also evaluated the potential polarization of the northern jet in the nebula and derived the PD and PA to be about 30% and 120○, respectively. |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
This work was supported by JSPS KAKENHI Grant Numbers 23H01186 (TM), 22K14068 (EW), 19H00696 (SG), and 22K03681 (SS). NB was supported by the INAF MiniGrant “PWNnumpol – Numerical Studies of Pulsar Wind Nebulae in The Light of IXPE." |
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言語 |
en |
| 出版者 |
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出版者 |
Oxford |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1093/pasj/psad070 |
| 助成情報 |
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助成機関名 |
日本学術振興会 |
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言語 |
ja |
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研究課題番号URI |
https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-23K25882/ |
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研究課題番号 |
23H01186 |
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研究課題名 |
X線偏光撮像とGeVガンマ線観測で探るパルサー風星雲における粒子加速と伝搬 |
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言語 |
ja |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science |
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言語 |
en |
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研究課題番号URI |
https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-22K14068/ |
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研究課題番号 |
22K14068 |
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研究課題名 |
Study of the Particle Acceleration and Transport in PWN through X-ray Spectro-polarimetry and GeV Gamma-ray Observtions |
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言語 |
en |
| 助成情報 |
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助成機関名 |
日本学術振興会 |
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言語 |
ja |
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研究課題番号URI |
https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-19H00696/ |
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研究課題番号 |
19H00696 |
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研究課題名 |
IXPE衛星を用いたカニ星雲の粒子加速機構の解明 |
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言語 |
ja |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science |
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言語 |
en |
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研究課題番号URI |
https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-22K03681/ |
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研究課題番号 |
22K03681 |
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研究課題名 |
IXPE衛星を用いたカニ星雲の粒子加速機構の解明 |
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言語 |
ja |
| 助成情報 |
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助成機関名 |
日本学術振興会 |
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言語 |
ja |
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研究課題名 |
X線偏光観測による回転するブラックホールの時空構造の解明 |
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言語 |
ja |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science |
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言語 |
en |
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研究課題名 |
Elucidation of blackhole spacetime with spin through polarization observation of X rays |
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言語 |
en |
| 助成情報 |
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助成機関名 |
日本学術振興会 |
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言語 |
ja |
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研究課題名 |
中性子星磁気圏のグローバル数値シミュレーション |
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言語 |
ja |
| 助成情報 |
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助成機関名 |
Japan Society for the Promotion of Science |
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言語 |
en |
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研究課題名 |
Global Simulations of the Neutron Star Magnetosphere |
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言語 |
en |
| 開始ページ |
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開始ページ |
1298 |
| 書誌情報 |
en : Publications of the Astronomical Society of Japan
巻 75,
号 6,
p. 1298-1310,
発行日 2023-10-27
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| 旧ID |
56144 |
PASJ_75_1298.pdf (936.1 KB)
