Un superamas de galaxies

Researchers discover the mechanisms governing superclusters of galaxies

A team of scientists has developed a way to simulate the environment of agglomerations galaxies in order to better understand them.

In concrete terms, these astronomers used a laser and plastic strands to model the electrons present in supercluster plasma. Eventually, the experiment provided details on the source of the heat of these heaps of stars, as well as on the mode of spread of energy within these cities.

Among the astrophysicists who took part in the research is Gianluca Gregoriprofessor of physics at Oxford University. In addition, the University of Rochester and the University of Chicago were also involved.

Lasers to better understand galaxy superclusters

In order to recreate the environment in which heaps of galaxies exist, astronomers have used lasers to simulate field lines and scatter tiny strands.

Next, the researchers noted that the electrons in the energy beam only come into contact certain times. They prefer rather to follow the direction of the lines of fields emitted previously. This action eliminates heat propagation and dissipation, resulting in energy cocoons very hot and unable to dissipate heat. This phenomenon is followed by a considerable rise in the core temperature of the clusters of nebulae.

“This experiment is an important springboard aimed at better understanding the phenomena occurring within clusters of stars. The conclusions of the experiments are extraordinary because they prove that the energy is transmitted in a way other than that emitted in the previous hypotheses. »

Gianluca Gregori, professor of physics at Oxford University

Long-standing questions finally resolved?

Thanks to the simulations, astronomers have been able to answer a significant number of old questions about galaxy superclusters.

“This experiment helps to resolve old concerns such as the cause of the high temperature of clusters of galaxies, despite the enormous energy they release. The consideration of this amount of energy has helped us to understand the evolution of clusters of nebulae. »

Petros Tzeferacos, Associate Professor of Physics and Astronomy

SOURCE: techexplorist

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