Time Evolution of the CMB Quadrupole
Cosmology and Nongalactic Astrophysics
2022-03-08 v2
Abstract
I show that the quadrupole of the Cosmic Microwave Background (CMB) evolves more rapidly than previously expected, as a result of the acceleration of the Sun towards the Galactic center. The acceleration, measured most recently by Gaia EDR3, implies a fractional change in the quadrupole of ~10^{-9} per year, an order of magnitude larger than expected from the evolution in the last scattering surface of the CMB.
Cite
@article{arxiv.2203.01806,
title = {Time Evolution of the CMB Quadrupole},
author = {Abraham Loeb},
journal= {arXiv preprint arXiv:2203.01806},
year = {2022}
}
Comments
3 pages, submitted to an AAS Journal