Overview:
ELMAG is a Monte Carlo program for the simulation of electromagnetic cascades
initiated by high-energy photons and electrons interacting with the
extragalactic background light. The original version was written by
M. Kachelrieß, S. Ostapchenko and R. Tomàs; M. Blytt joined
for version 3.01.
Download
The current version is Elmag 3.03 which can be downloaded
here.
Changes
-
in version 3.03:
- The implementation of the Franceschini et al. EBL was corrected -- thanks to Alexander Korochkin for pointing out problems at large redshift/low energies.
- A bug in the generation of helical fields was corrected.
-
in version 3.02:
- Energy losses of electrons due to plasma instabilities can be included.
- A missing switch affecting the MPI version in 1.5d runs was added.
-
in version 3.01:
- Turbulent magnetic fields can be generated as Gaussian random fields.
- Three-dimensional electron and positron trajectories can be calculated solving the Lorentz equation.
- Two-dimensional source images as function of the energy and the time delay of the secondaries can be produced.
- The input options were restructured.
-
in version 2.03:
- The redshift evolution for the Gilmore EBL tables was corrected. Thanks to Marco Muzio for pointing out this error.
- One additional EBL background was contributed by Manuel Meyer.
- A python version was contributed by Manuel Meyer.
-
in version 2.02:
- Three additional EBL backgrounds were contributed by Andrey Saveliev.
- The time-step dt used in the propagation of photons close to threshold was reduced: in previous versions, dt could become large relative to the evolution time of the EBL background, leading to too strong cutoffs for sources at large redshift. Thanks to Kumiko Kotera and Foteini Oikonomou for pointing out this problem.
Documentation
Manuals can be found here.