443 citations · 9.8k across the 192 of their papers we have counts for
8 papers · 1 filter
Time-Dependent Photoionization in a Dusty Medium. III: The effect of dust on the photoionization of metals
Davide Lazzati, Rosalba Perna
We use the time-dependent photoionization and dust destruction code developed by Perna & Lazzati (2002) to study the time evolution of the medium in a dusty gaseous cloud illuminat…
Time-Dependent Photoionization in a Dusty Medium II: Evolution of Dust Distributions and Optical Opacities
Rosalba Perna, Davide Lazzati, Fabrizio Fiore
The interaction of a radiation field with a dusty medium is a relevant issue in several astrophysical contexts. We use the time-dependent photoionization code in a dusty medium dev…
Broadband Modeling of GRB 021004
Jeremy S. Heyl, Rosalba Perna
We present a broadband modeling of the afterglow of GRB 021004. The optical transient of this burst has been detected very early and densely sampled in several bands. Its light cur…
Neutrino trapping and accretion models for Gamma-Ray Bursts
Tiziana Di Matteo, Rosalba Perna, Ramesh Narayan
Many models of Gamma Ray Bursts invoke a central engine consisting of a black hole of a few solar masses accreting matter from a disk at a rate of a fraction to a few solar masses…
Time-Dependent Photoionization in a Dusty Medium I: Code Description and General Results
Rosalba Perna, Davide Lazzati
We present a time-dependent photoionization code that combines self-consistently metal evolution and dust destruction under an intense X-ray UV radiation field. Firstly, we extend…
A Self-Similar Solution for the Propagation of a Relativistic Shock in an Exponential Atmosphere
Rosalba Perna, Mario Vietri
We derive a fully relativistic, self-similar solution to describe the propagation of a shock along an exponentially decreasing atmosphere, in the limit of very large Lorentz factor…