Constraints on supernovae dimming from photon-pseudo scalar coupling

Details Constraints on supernovae dimming from photon-pseudo scalar coupling Constraints on supernovae dimming from photon-pseudo scalar coupling

2005-07-29

arxiv.org/abs/astro-ph/0508002v1

Phys.Rev.D73:023003,2006

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures

Scientific paper

10.1103/PhysRevD.73.023003

An alternative mechanism that dims high redshift supernovae without cosmic acceleration utilizes an oscillation of photons into a pseudo-scalar particle during transit. Since angular diameter distance measures are immune to the loss of photons, this ambiguity in interpretation can be resolved by combining CMB acoustic peak measurements with the recent baryon oscillation detection in galaxy power spectra. This combination excludes a non-accelerating dark energy species at the 4sigma level regardless of the level of the pseudo-scalar coupling. While solutions still exist with substantial non-cosmological dimming of supernovae, they may be tested with future improvement in baryon oscillation experiments.

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