Recollimation and Focusing of Relativistic, Radiative Jets: Applications to Blazars and M87 (2008)
Bromberg, Omer, Levinson, Amir
Hydrodynamic collimation of a radiating, relativistic outflow is studied using a semi-analytical model developed earlier. It is demonstrate that even modest radiative cooling of the shocked outflow...
Collimation and Radiative Deceleration of Jets in TeV AGNs (2007)
Levinson, Amir, Bromberg, Omer
We consider some implications of the rapid X-ray and TeV variability observed in M87 and the TeV blazars. We outline a model for jet focusing and demonstrate that modest radiative cooling can lead to...
Relativistic Photon Mediated Shocks (2007)
Levinson, Amir, Bromberg, Omer
A system of equations governing the structure of a steady, relativistic radiation dominated shock is derived, starting from the general form of the transfer equation obeyed by the photon distribution...
Bromberg, Omer, Levinson, Amir
A model is developed for the confinement and collimation of a baryon poor outflow by its surrounding medium. Both, confinement by kinetic pressure of a static corona, and confinement by the ram...
An Observational Limit on the Earliest GRBs (2007)
We predict the redshift of the first observable (i.e., in our past light cone) Gamma Ray Burst (GRB) and calculate the GRB-rate redshift distribution of the Population III stars at very early times...
Bromberg, Omer, Levinson, Amir, Van Putten, Maurice
The gravitational-wave spectrum emitted by a non-axisymmetric torus rotating at an angular velocity $\Omega_T$, is derived in terms of a structure function representing a combination of sausage-tilt...