Distinguishing between stars and galaxies composed of matter and antimatter using photon helicity detection

Details Distinguishing between stars and galaxies composed of matter and antimatter using photon helicity detection Distinguishing between stars and galaxies composed of matter and antimatter using photon helicity detection

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvl..39.1104c&link_type=abstract

Physical Review Letters, vol. 39, Oct. 24, 1977, p. 1104-1107. Research supported by the Robert A. Welch Foundation and ERDA.

Physics

3

Antimatter, Galactic Radiation, Matter (Physics), Photons, Polarization Characteristics, Stellar Radiation, Nuclear Fusion, Parity, Positrons

Scientific paper

The positrons produced in fusion processes in matter stars will have predominantly a 'right' helicity due to the nonconservation of parity in weak interactions. This helicity is transferred to bremsstrahlung and forward in-flight annihilation radiation, which will be right-circularly polarized. In antimatter stars, CP symmetry will make the equivalent radiation left-circularly polarized. The helicity of such radiation can be used to distinguish between astronomical objects composed of matter and antimatter.

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