Por Zhen Cao (Institute of High Energy Physics, Tianfu Cosmic Ray Research Center).
O LHAASO descobriu raios cósmicos PeVatrons em toda a nossa galáxia. Entre eles, os buracos negros são considerados um grupo populacional muito relevante...
Abstract: LHAASO has discovered cosmic ray (CR) PeVatrons everywhere in our Galaxy. Among them, black holes (BH) are found to be a very outstanding population group. They have been published as a catalogue for first time. One of them is a super-PeVatron that boosts particles to energies higher than 10 PeV and another is almost perfect BH+jets system. They permit detailed investigation for insight of fundamental problems associated with the accretion disks, jets and relevant particle acceleration mechanisms. Moreover, it is found that they may sufficiently supply the CR flux above 1 PeV if there existed an order of 10 of them in the Milky Way. This hints some connection to the newly found structures in the CR spectrum around the knee. This also sets targets for the future investigations in advanced gamma rays and neutrino experiments.
