Subaru Constraint on Circular Polarization in I-Band Emission from the Magnetar 4U 0142+61
Subaru Constraint on Circular Polarization in I-Band Emission from the Magnetar 4U 0142+61
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Subaru 对 Magnetar 4U 0142 61 I 波段发射圆偏振的限制
DOI：
10.1093/pasj/64.2.l1
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发表时间：
2011-11
影响因子：
2.3
通讯作者：
Zhong, Jing
中科院分区：
文献类型：
--
作者：
Wang, Zhongxiang;Tanaka, Yasuyuki T.;Zhong, Jing
本文首次对反常X射线脉冲星（AXP）4U 0142+61在可见光波段进行了成像圆偏振测量。AXP是唯一一颗在可见光和红外波长下得到充分研究的磁星，并且已知在波长范围内具有复杂的宽带光谱。用8.2米Subaru望远镜在I波段进行了光学偏振观测。根据观察，圆偏振度V测量为V = 1.1 +/-2.0%，或垂直条V垂直条<= 4.3%（90%置信度）。相对较大的不确定性是由于源的模糊（I = 23.4-24.0）。考虑到目前建议的模型，从磁星的光发射，我们的结果是不够的结论性判别模型。我们建议，因为线性极化预计将在模型中很强，线性极化的磁星应该进行。
We present the first imaging circular polarimetry of the anomalous X-ray pulsar (AXP) 4U 0142+61 at optical wavelengths. The AXP is the only magnetar that has been well studied at optical and infrared wavelengths, and is known to have a complicated broad-band spectrum over the wavelength range. The optical polarimetric observation was carried out with the 8.2-m Subaru telescope at the I-band. From the observation, the degree of circular polarization, V, was measured to be V = 1.1 +/- 2.0%, or vertical bar V vertical bar <= 4.3% (90% confidence). The relatively large uncertainty was due to the faintness of the source (I = 23.4-24.0). Considering the currently suggested models for optical emission from magnetars, our result is not sufficiently conclusive to discriminate the models. We suggest that because linear polarization is expected to be strong in the models, linear polarimetry of this magnetar should be conducted.
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DOI：
10.1086/344564
发表时间：
2002-06
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
D. Eichler;M. Gedalin;Y. Lyubarsky
通讯作者：
D. Eichler;M. Gedalin;Y. Lyubarsky
DOI：
10.1086/375443
发表时间：
2003-08
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
G. Sloan;K. Kraemer;S. Price;R. Shipman
通讯作者：
G. Sloan;K. Kraemer;S. Price;R. Shipman
影响因子：
0.9
作者：
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通讯作者：
Yaseen A. Al-Soud;H. Al-Sa’doni;B. Saeed;Ihsan H. Jaber;Mohammad O. Beni-Khalid;N. Al-Masoudi;Tahsin Abdul-Kadir;P. Colla;Bernardetta Busonera;T. Sanna;R. Loddo
DOI：
10.1046/j.1365-8711.1998.02018.x
发表时间：
1998-11
影响因子：
4.8
作者：
D. M. Gould;A. Lyne
通讯作者：
D. M. Gould;A. Lyne
DOI：
10.1088/0004-637x/716/2/1345
发表时间：
2007-08
期刊：
The Astrophysical Journal
影响因子：
--
作者：
M. Gonzalez;R. Dib;V. Kaspi;P. Woods;C. Tam;F. P. G. M. University;Dynetics;Inc. Nsstc;Nasa Gsfc
通讯作者：
M. Gonzalez;R. Dib;V. Kaspi;P. Woods;C. Tam;F. P. G. M. University;Dynetics;Inc. Nsstc;Nasa Gsfc