Tight coupling expansion and fully inhomogeneous magnetic fields

被引：54
作者：
Giovannini, Massimo
机构：
[1] Ctr Enrico Fermi, I-00184 Rome, Italy
[2] CERN, Dept Phys, Div Theory, CH-1211 Geneva 23, Switzerland
来源：
PHYSICAL REVIEW D | 2006年 / 74卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.74.063002
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The tight coupling expansion, appropriately generalized to include large-scale magnetic fields, allows the estimate of the brightness perturbations of CMB anisotropies for typical wavelengths that are larger than the Hubble radius after matter-radiation equality. After discussing the basic features of the predecoupling initial conditions in the presence of fully inhomogeneous magnetic fields, the tight coupling expansion is studied both analytically and numerically. From the requirement that the amplitudes and phases of Sakharov oscillations are (predominantly) adiabatic and from the inferred value of the plateau in the temperature autocorrelation, the effects of the magnetized contribution can be systematically investigated and constrained.
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页数：19
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