2nd International Symposium on the Modern Physics of Compact Stars and Relativistic Gravity | |
Primordial magnetism in CMB polarization | |
物理学;天文学 | |
Pogosian, Levon^1 | |
Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada^1 | |
关键词: Characteristic frequencies; CMB polarization; Cosmic magnetic fields; Milky ways; Mode coupling; Mode signals; Potential sources; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/496/1/012025/pdf DOI : 10.1088/1742-6596/496/1/012025 |
|
学科分类:天文学(综合) | |
来源: IOP | |
【 摘 要 】
A large scale B-mode signal in the CMB polarization would constitute a smoking gun of Inflation and is the main target of several ongoing and upcoming experiments. In this contribution, I consider distinguishing features of another potential source of primordial B-modes - magnetic fields. In particular, the Faraday Rotation of CMB polarization provides a distinctive signature of cosmic magnetic fields through the characteristic frequency dependence and the mode-coupling correlations of the CMB variables. I discuss constraints on primordial magnetism that can be expected from future CMB experiments, taking into account the obstruction caused by the magnetic field of the Milky Way.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
Primordial magnetism in CMB polarization | 538KB | download |