A review-style paper asserts that primordial antimatter produced during inflation populates the Milky Way and that observations of positrons, antihelium, and antistar candidates confirm this prediction.
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Polarization of photons emitted in weak decays occuring at distant star allows to determine whether this star is made from antimatter. Even more promissing is the observation of neutrinos (antineutrinos) produced at neutronization (antineutronization) reactions at the beginning of SN ($\bar{SN}$) explosion.
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astro-ph.GA 1years
2026 1verdicts
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Antimatter in the universe and Milky Way
A review-style paper asserts that primordial antimatter produced during inflation populates the Milky Way and that observations of positrons, antihelium, and antistar candidates confirm this prediction.