Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-12-07
Phys.Rev.D66:043517,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 1 figure
Scientific paper
10.1103/PhysRevD.66.043517
Recently Csaki, Kaloper and Terning (hep-ph/0111311) suggested that the observed dimming of distant type Ia supernovae may be a consequence of mixing of the photons with very light axions. We point out that the effect of the plasma, in which the photons are propagating, must be taken into account. This effect changes the oscillation probability and renders the dimming frequency-dependent, contrary to observations. One may hope to accommodate the data by averaging the oscillations over many different coherence domains. We estimate the effect of coherence loss, either due to the inhomogeneities of the magnetic field or of the intergalactic plasma. These estimates indicate that the achromaticity problem can be resolved only with very specific, and probably unrealistic, properties of the intergalactic medium.
Deffayet Cédric
Harari Diego
Uzan Jean-Philippe
Zaldarriaga Matias
No associations
LandOfFree
Dimming of Supernovae by Photon-Pseudoscalar Conversion and the Intergalactic Plasma does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dimming of Supernovae by Photon-Pseudoscalar Conversion and the Intergalactic Plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dimming of Supernovae by Photon-Pseudoscalar Conversion and the Intergalactic Plasma will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-407022