  A detector undergoing a huge acceleration measures a thermal distribution
with the Unruh temperature out of the Minkowski vacuum. Though such huge
accelerations occur naturally in astrophysics and gravity, one may design
untraintense laser facility to detect the Unruh effect and simulate laboratory
astrophysics. We derive the QED vacuum polarization and the vacuum persistence
amplitude as well as the Schwinger pair creation in an accelerating frame when
a constant electric field exists in the Minkowski spacetime. We advance a
thermal interpretation of Schwinger pair creation in the Rindler space.
