Constraining gravitational theories by observing magnetic white dwarfs

被引：0
|
作者：
Preuss, O [1 ]
Jordan, S [1 ]
Haugan, MP [1 ]
Solanki, SK [1 ]
机构：
[1] Max Planck Inst Sonnensystemforsch, D-37191 Katlenburg Lindau, Germany
来源：
14TH EUROPEAN WORKSHOP ON WHITE DWARFS, PROCEEDINGS | 2005年 / 334卷
关键词：
D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Under the assumption of a specific nonminimal coupling of torsion to electromagnetism, spacetime is birefringent in the presence of a gravitational field leading to depolarization of light emitted from extended astrophysical sources. We use polarimetric data of the magnetic white dwarf RE J0317-853 to set for the very first time constraints on the essential coupling constant for this effect, giving k(2) less than or similar to 22m)(2).
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页码：265 / 268
页数：4
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