演講資訊

摘要：

In space plasmas the local observations by spacecrafts provide us the microscopic information of the plasma and electric/magnetic fields, however, it is difficult to obtain the global structures of the phenomena. In contrast, in astrophysical plasmas global images provide us the macroscopic information, although there is no local observation and thus no microscopic information. Recent progresses of laser technologies enable us to investigate space and astrophysical phenomena in laboratories; laboratory experiments on space and astrophysical phenomena provide us the local and global information simultaneously. With this unique capability we have investigated plasma jets, collisionless shocks, generation and amplification of a magnetic field, magnetic reconnections, and particle acceleration in the universe. So far, most of them are limited to non-relativistic regime. While the space plasmas are mostly non-relativistic, the astrophysical plasmas can be highly relativistic. Thus, the laboratory astrophysics with intense lasers provides us unique opportunities to investigate relativistic phenomena in the universe. We establish a platform to investigate space and astrophysical phenomena from non-relativistic to relativistic regime with the 100 TW laser facility at National Central University. We briefly report our recent efforts on the experiments, especially on the magnetic field in the universe.