Constraints on Primordial Magnetic Fields from their impact on the ionization history with Planck 2018
Constraints on Primordial Magnetic Fields from their impact on the ionization history with Planck 2018
复制标题
Planck 2018 对原始磁场对电离历史影响的限制
DOI：
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发表时间：
2022
影响因子：
4.8
通讯作者：
J. Rubiño
中科院分区：
文献类型：
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作者：
D. Paoletti;J. Chluba;F. Finelli;J. Rubiño
我们更新和扩展我们以前的CMB各向异性约束的原始磁场，通过其耗散双极扩散和MHD衰减湍流效应后复合电离的历史。我们使用最新的普朗克2018数据发布来推导约束，该数据发布改进了E模式偏振，导致相对于普朗克2015的整体约束更严格。我们还使用了SROLL 2地图制作算法获得的低多极E模式极化可能性，并注意到它如何与比普朗克2018基线更大的磁场振幅兼容，特别是对于正光谱指数。由这些效应的组合产生的磁场振幅的95% CL约束为$sqrt{langle B^2
角} <0.69（<0.72）$ nG的普朗克2018（SROLL 2）通过边缘化的磁谱指数。我们还研究了允许变化的阻尼尺度的影响以及磁场效应和透镜振幅参数之间的相互作用。
We update and extend our previous CMB anisotropy constraints on primordial magnetic fields through their dissipation by ambipolar diffusion and MHD decaying turbulence effects on the post-recombination ionization history. We derive the constraints using the latest Planck 2018 data release which improves on the E-mode polarization leading to overall tighter constraints with respect to Planck 2015. We also use the low-multipole E-mode polarization likelihood obtained by the SROLL2 map making algorithm and we note how it is compatible with larger magnetic field amplitudes than the Planck 2018 baseline, especially for positive spectral indices. The 95 per cent CL constraints on the amplitude of the magnetic fields from the combination of the effects is $sqrt{langle B^2
angle } <0.69 (<0.72)$ nG for Planck 2018 (SROLL2) by marginalizing on the magnetic spectral index. We also investigate the impact of a damping scale allowed to vary and the interplay between the magnetic field effects and the lensing amplitude parameter.