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Merger of Two Boson Stars Could Explain Existence of Dark Matter Written by AZoQuantumFeb 25 2021 An international research team has now demonstrated that the heaviest collision of black holes to be ever visualized and created by the gravitational-wave GW190521 could be more mysterious than previously believed that is, the merger of a pair of boson stars. Illustration of a merger of two boson stars. Image Credit: Nicolás Sanchis-Gual y Rocío García Souto. The new study would be the first proof of the presence of these theoretical objects that represent one of the key candidates to create dark matter, which constitutes 27% of the Universe. ....
Nicolás Sanchis-Gual and Rocío García-Souto The hypothetical stars are among the simplest exotic compact objects proposed and constitute well founded dark matter candidates. Within this interpretation, the team is able to estimate the mass of a new particle constituent of these stars, an ultra-light boson with a mass billions of times smaller than that of the electron. Their analysis has been published in the journal Physical Review Letters on 24 February 2021. The team is co-led by Dr. Juan Calderón Bustillo, a former professor from the Department of Physics at CUHK and now “La Caixa Junior Leader – Marie Curie Fellow”, at the Galician Institute of High Energy Physics, and Dr. Nicolás Sanchis-Gual, a postdoctoral researcher at the University of Aveiro and at the Instituto Superior Técnico (University of Lisbon). Other collaborators came from the University of Valencia, the University of Aveiro and Monash University. Samson Hin Wai Leong, a second-y ....