Cosmic microwave background dipole, peculiar velocity and Hubble flow

TL;DR

This paper examines different cosmological models to explain the cosmic microwave background dipole, analyzing whether local velocities or Hubble flow contribute to the observed anisotropy.

Contribution

It introduces theorems for understanding the causes of the CMB dipole and explores alternative explanations involving Hubble flow and peculiar velocities of large structures.

Findings

Solar system's peculiar velocity cannot explain the CMB dipole

Hubble flow of the Great Attractor may account for the dipole

Further peculiar velocity of the Great Attractor is a potential explanation

Abstract

Two types of cosmology are discussed and their implications for the observed cmb (cosmic microwave background radiation) dipole are described. Theorems useful for understanding the cause for a cmb dipole are presented. Since the present peculiar velocity of the solar system relative to the GA (Great Attracter) cannot explain the observed cmb dipole, the author presents the possibility of Hubble flow of the GA as a cause in one case and a further peculiar velocity of the GA in the other case.