Magneto-optic effects of the Cosmic Microwave Background
| العنوان: | Magneto-optic effects of the Cosmic Microwave Background |
|---|---|
| المؤلفون: | Damian Ejlli |
| المصدر: | Nuclear Physics Nuclear Physics B, Vol 935, Iss, Pp 83-128 (2018) |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Nuclear and High Energy Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Polarization in astronomy, Cosmic microwave background, FOS: Physical sciences, Field strength, Astrophysics::Cosmology and Extragalactic Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Photon polarization, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Vacuum polarization, 010306 general physics, Circular polarization, Physics, Quantum Physics, 010308 nuclear & particles physics, Linear polarization, Polarization (waves), High Energy Physics - Phenomenology, Quantum electrodynamics, lcsh:QC770-798, Atomic physics, Quantum Physics (quant-ph), Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | Generation of magneto-optic effects by the interaction of the CMB with cosmic magnetic fields is studied. Effects which generate polarization such as the Cotton-Mouton effect, vacuum polarization and photon-pseudoscalar mixing in external magnetic field are studied. Considering the CMB linearly polarized at decoupling time, it is shown that photon-pseudoscalar mixing in external magnetic field, the Cotton-Mouton effect in plasma and the vacuum polarization in cosmic magnetic field, would generate elliptic polarization of the CMB depending on the photon frequency and magnetic field strength. Among standard magneto-optic effects, the Cotton-Mouton effect in plasma turns out to be the dominant effect in the generation of CMB elliptic polarization in the low frequency part $\nu_0 \sim 10^8-10^9$ Hz with degree of circular polarization $P_C(T_0)\simeq 10^{-10}-10^{-6}$ for magnetic field amplitude $B_{e0}\sim 100\, \text{nG}-1$ nG. The vacuum polarization in magnetic field is the dominant process in the high frequency part $\nu_0\geq 10^{10}$ Hz where the degree of circular polarization at present is $P_C(T_0)\lesssim 10^{-11}$ in the best scenario. It is shown that photon-pseudoscalar particle mixing in cosmic magnetic field generates elliptic polarization of the CMB as well and even in the case of initially unpolarized CMB. New limits/constraints on the pseudoscalar parameter space are found. By using current limit on the degree of circular polarization of the CMB, the upper limit of $|g_{\phi\gamma} Comment: Matches the published version in Nuclear Physics B |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4ab1d70d022139d55731ddb94d4f9bc http://arxiv.org/abs/1607.02094 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b4ab1d70d022139d55731ddb94d4f9bc |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |