Planck constraints on cross-correlations between anisotropic cosmic birefringence and CMB polarization

被引：18
|
作者：
Bortolami, M. [1 ,2 ]
Billi, M. [3 ,4 ,5 ,6 ]
Gruppuso, A. [1 ,4 ,5 ]
Natoli, P. [1 ,2 ]
Pagano, L. [1 ,2 ,7 ]
机构：
[1] Univ Ferrara, Dipartimento Fis & Sci Terra, via Saragat 1, I-44122 Ferrara, Italy
[2] Ist Nazl Fis Nucl, Sez Ferrara, via Saragat 1, I-44122 Ferrara, Italy
[3] Univ Bologna, Dipartimento Fis & Astron, Alma Mater Studiorum, Via Gobetti 93-2, I-40129 Bologna, Italy
[4] Ist Nazl Astrofis, Osserv Astrofis & Sci Spazio Bologna, via Gobetti 101, I-40129 Bologna, Italy
[5] Ist Nazl Fis Nucl, Sez Bologna, viale Berti Pichat 6-2, I-40127 Bologna, Italy
[6] CSIC UC, Inst Fis Cantabria IFCA, Ave Castros s-n, Santander 39005, Spain
[7] Univ Paris Saclay, Univ Paris Sud, Inst Astrophys Spatiale, CNRS, Bat 121, Orsay F-91405O, France
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2022年 / 09期
关键词：
CMBR polarisation; CMBR theory;
D O I：
10.1088/1475-7516/2022/09/075
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmic Birefringence (CB) is the in-vacuo rotation of the linear polarization direction of photons during propagation, caused by parity-violating extensions of Maxwell electromagnetism. We build low resolution CB angle maps using Planck Legacy and NPIPE products and provide for the first time estimates of the cross-correlation spectra C alpha E L and C alpha B L between the CB and the CMB polarization fields. We also provide updated CB auto-correlation spectra C alpha alpha L as well as the cross-correlation CL alpha T with the CMB temperature field. We report constraints by defining the scale-invariant amplitudes A alpha X -L(L + 1)C alpha X L /27r, where X = alpha, T, E, B, finding no evidence of CB. In particular, we find A alpha E = (-7.8 +/- 5.6) nK deg and A alpha B = (0.3 +/- 4.0) nK deg at 68% C.L..
引用
收藏
页数：26
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