Precision detection of the cosmic neutrino background

被引：73

作者：

Lopez, RE ^{[1
]}

Dodelson, S

Heckler, A

Turner, MS

机构：

[1] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[2] Fermi Natl Accelerator Lab, NASA, Fermilab Astrophys Ctr, Batavia, IL 60510 USA

[3] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[4] Univ Chicago, Enrico Fermi Inst, Dept Astron & Astrophys, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.82.3952

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the standard big bang cosmology the canonical value fur the ratio of relic neutrinos to cosmic microwave background (CMB) photons is 9/11. Within the framework of the standard model of particle physics there are small corrections, in sum about 1%, due to slight heating of neutrinos by electron-positron annihilations and finite-temperature QED effects. We show that this leads to changes in the predicted CMB anisotropies that will bias determination of the other cosmological parameters if not correctly taken into account. These changes might be detected by future satellite experiments.

引用

页码：3952 / 3955

页数：4

共 28 条

[1]

Bond JR, 1997, MON NOT R ASTRON SOC, V291, pL33

[2] PRIMORDIAL NUCLEOSYNTHESIS INCLUDING RADIATIVE, COULOMB, AND FINITE-TEMPERATURE CORRECTIONS TO WEAK RATES [J].