Physicists figured out how to do without dark matter.
Physicists explain the anomalous excess of high-energy electrons in space, without resorting to dark matter. In the model created by scientists "extra" particles generated by radiation from stars
Until now, one of the most reasonable explanations was considered the interaction of dark matter particles.
The excess of high-energy electrons in cosmic radiation was discovered in the course of several experiments, using different methods. Almost immediately it was suggested explanation for this phenomenon: the elementary particles of high energy may be the result of the annihilation of dark matter particles, reported
It is known that dark matter is not yet known open substance, which is "responsible for approximately 23% of the mass of the universe. Speculation about its existence emerged after it was discovered that many of the interactions in space may not occur as they occur: the participants would have to be heavier than it actually is.
The creators of the work proposed a theory, which involves only the "normal" phenomenon. One source of electrons in the universe is the explosions of supernovae. As the movement of electrons through the Milky Way, their energy decreases. The existence of high-energy electrons in the framework of this theory is not explained.
The researchers suggested that the radiation emitted by stars, can influence the energy of the electrons in such a way that the final distribution of these elementary particles in energy would be consistent with the observed.
The new model well explains the results obtained by several spacecraft, including the apparatus PAMELA, who found space in an unusual ratio of electrons and positrons (anti-matter counterparts of electrons).
Recall that last year two of scientists suggested that "normal" explanation for another phenomenon that is often associated with dark matter - an unusual distribution in space of gamma radiation.