Researchers study black holes to measure photon mass

(Phys.org)—A global team of scientists, including a University of Mississippi physicist, has determined the best constraint on the mass of photons so far, using observations of super-massive black holes.

The research findings appear in the September issue of Physical Review Letters, one of the most prestigious, peer-reviewed academic journals in the field. “Black hole bombs and photon mass bounds” is co-authored by Emanuele Berti, UM assistant professor of physics and astronomy, along with fellow researchers Paolo Pani, Vitor Cardoso, Leonardo Gualtieri and Akihiro Ishibashi. This paper details how the scientists, who work in Portugal, Italy, Japan and the U.S., found a way to use astrophysical observations to test a fundamental aspect of the Standard Model – namely, that photons have no mass – better than anyone before.

Read more at: http://phys.org/news/2012-09-black-holes-photon-mass.html#jCp

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