Rarefaction acceleration of ultrarelativistic magnetized jets in gamma-ray burst sources
Rarefaction acceleration of ultrarelativistic magnetized jets in gamma-ray burst sources
When a magnetically-dominated super-fast magnetosonic GRB jet leaves the progenitor star the external pressure support may drop and the jet may enter the regime of ballistic expansion during which its magnetic acceleration becomes highly ineffective. However, recent numerical simulations suggested that the transition to this regime is accompanied by a …