The MSC-BW is proud to inform, that one of its associates, Dr. Fabrizio Tamburini from the Center for Art and Media (ZKM, www.zkm.de), has been published by Physica Scripta. Tamburini and his colleague Ignazio Licata wrote an article about their theory, that the periodic spectral modulations observed in 236 Sloan Sky Survey stars are due to dark matter effects, rather than to extraterrestrial civilization, as a contradicting theory claims.
The article was accepted and published by the Institute of Physics (IOP) on behalf of the Royal Swedisch Academy of Science in the magazine Physica Sripta.
The full article can be read online:
The search for dark matter (DM) is one of the most active and challenging areas of current research. Possible DM candidates are ultralight fields such as axions and weak interacting massive particles (WIMPs). Axions piled up in the center of stars are supposed to generate matter/DM configurations with oscillating geometries at a very rapid frequency, which is a multiple of the axion mass m B (Brito et al (2015); Brito et al (2016)). Borra and Trottier (2016) recently found peculiar ultrafast periodic spectral modulations in 236 main sequence stars in the sample of 2.5 million spectra of galactic halo stars of the Sloan Digital Sky Survey (~1% of main sequence stars in the F–K spectral range) that were interpreted as optical signals from extraterrestrial civilizations, suggesting them as possible candidates for the search for extraterrestrial intelligence (SETI) program. We argue, instead, that this could be the first indirect evidence of bosonic axion-like DM fields inside main sequence stars, with a stable radiative nucleus, where a stable DM core can be hosted. These oscillations were not observed in earlier stellar spectral classes probably because of the impossibility of starting a stable oscillatory regime due to the presence of chaotic motions in their convective nuclei. The axion mass values, , obtained from the frequency range observed by Borra and Trottier, ) THz, agree with the recent theoretical results from high-temperature lattice quantum chromodynamics (Borsanyi et al (2016); Borsanyi et al (2016b)).“
excerpt from the paper
„Can the periodic spectral modulations observed in 236 Sloan Sky Survey stars be due to dark matter effects?“
Fabrizio Tamburini and Ignazio Licata
Published 28 July 2017 • © 2017 The Royal Swedish Academy of Sciences