Anti-stars in the Milky Way and primordial black holes

TL;DR

Recent astronomical data suggests the presence of antimatter objects in the Milky Way, including anti-stars and primordial black holes, supported by gamma-ray and anti-helium observations.

Contribution

This paper analyzes recent observational evidence for antimatter in our galaxy and discusses theoretical predictions related to anti-stars and primordial black holes.

Findings

Detection of 0.511 MeV gamma-rays from electron-positron annihilation

Observation of large fluxes of anti-helium nuclei at AMS

Identification of stars emitting excess gamma-rays potentially indicating antimatter composition

Abstract

Astronomical data of the several recent years, which present an evidence in favour of abundant antimatter population in our Galaxy, Milky Way, are analysed. The data include: registration of gamma-rays with energy 0.511 MeV, which surely originate from electron-positron annihilation at rest, very large flux of anti-helium nuclei, discovered at AMS, and 14 stars which produce excessive gamma-rays with energies of several hundred MeV which may be interpreted as indication that these stars consist of antimatter. Theoretical predictions of these phenomena, made much earlier ago are described