Relativistic magnetic reconnection in laser laboratory for testing an emission mechanism of hard-state black hole system
King Fai Farley Law, Y. Abe, A. Morace, Yasunobu Arikawa, Shohei Sakata, Seungho Lee, Kazuki Matsuo, Hiroki Morita, Yugo Ochiai, Chang Liu, Akifumi Yogo, K. Okamoto, D. Golovin, M. Ehret, T. Ozaki, M. Nakai, Y. Sentoku, J. J. Santos, E. d’Humières, Ph. Korneev, Shinsuke Fujioka
Abstract
Magnetic reconnection in a relativistic electron magnetization regime was observed in a laboratory plasma produced by a high-intensity, large energy, picoseconds laser pulse. Magnetic reconnection conditions realized with a laser-driven several kilotesla magnetic field is comparable to that in the accretion disk corona of black hole systems, i.e., Cygnus X-1. We observed particle energy distributions of reconnection outflow jets, which possess a power-law component in a high-energy range. The hardness of the observed spectra could explain the hard-state x-ray emission from accreting black hole systems.