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Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61
http://hdl.handle.net/2261/55991
http://hdl.handle.net/2261/559918e3b7366-27cd-4c98-87c9-8de8babe322f
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-02-04 | |||||
タイトル | ||||||
タイトル | Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Makishima, K.
× Makishima, K.× Enoto, T.× Hiraga, J. S.× Nakano, T.× Nakazawa, K.× Sakurai, S.× Sasano, M.× Murakami, H |
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著者所属 | ||||||
著者所属 | Department of Physics, Graduate School of Science, the University of Tokyo | |||||
著者所属 | ||||||
著者所属 | Research Center for the Early Universe, Graduate School of Science, the University of Tokyo | |||||
著者所属 | ||||||
著者所属 | MAXI team, RIKEN | |||||
著者所属 | ||||||
著者所属 | High Energy Astrophysics Laboratory, RIKEN Nishina Center | |||||
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著者所属 | NASA Goddard Space Flight Center, Astrophysics Science Division | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Magnetars are a special type of neutron stars, considered to have extreme dipole magnetic fields reaching ∼10^11 T. The magnetar 4U 0142+61, one of the prototypes of this class, was studied in broadband x rays (0.5–70 keV) with the Suzaku observatory. In hard x rays (15–40 keV), its 8.69 sec pulsations suffered slow phase modulations by ±0.7 sec, with a period of ∼15 h. When this effect is interpreted as free precession of the neutron star, the object is inferred to deviate from spherical symmetry by ∼1.6×10^−4 in its moments of inertia. This deformation, when ascribed to magnetic pressure, suggests a strong toroidal magnetic field, ∼10^12 T, residing inside the object. This provides one of the first observational approaches towards toroidal magnetic fields of magnetars. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research掲載「宇宙で最強な磁石天体が、磁力でわずかに変形している兆候を発見」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/ | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research "The strongest magnetic stars are possibly deformed" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/ | |||||
書誌情報 |
Physical Review Letters 巻 112, 号 17, p. 171102, 発行日 2014-04-30 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0031-9007 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1079-7114 | |||||
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収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773679 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/Phys RevLett.112.171 102 | |||||
権利 | ||||||
権利情報 | (c) 2014 American Physical Society | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
関係URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/ | |||||
関係URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/ | |||||
関係URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.171102 |