Apparent unruh radiation paradox

Oct 2019
1
0
Australia
What happens if you accelerate hard enough to produce a stable unruh particle with mass, ie an electron and then catch it and stop accelerating? Unruh radiation is only supposed to exist from the frame of reference of accelerating observers. From my understanding, unruh and Hawking radiation can be particles with mass as long as there is enough energy to cover the mass of the particle.