Relativistic magnetic reconnection in laser laboratory for testing an emission mechanism of hard-state black hole system.

Law, K F F; Abe, Y; Morace, A; Arikawa, Y; Sakata, S; Lee, S; Matsuo, K; Morita, H et al. · Phys Rev E · 2020

basic_science · Level V

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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.