Spectrum Configuration

Finally, the spectrum configuration tells TARDIS information needed for spectrum generation (see Spectrum Generation):

start and end are given as values with units. num specifies the number of bins used to build the spectrum and must be given as an integer. TARDIS produces the spectrum via three different methods. For more information on these methods, visit the pages below:

• real: Basic Spectrum Generation

• virtual: Virtual Packet Scheme

• integrated: Formal Integral Method

The three methods can be specified when plotting the spectrum (see the quickstart guide for an example of this).

The following example shows how to edit variables for the different methods.

spectrum:
        start: 500 angstrom
        stop: 20000 angstrom
        num: 1000
        method: integrated
        integrated:
                points: 2000
                interpolate_shells: 100
        virtual:
                tau_russian: 15
                survival_probability: 0.1
                enable_biasing: True
                virtual_packet_logging: True

One can also change these parameters as they wish by reading in the configuration file and editing them before running the simulation (see Reading a Configuration).

Warning

As of now, the method argument serves no purpose other than adding the integrated spectrum to the HDF output when “integrated” is used as the method (see How to Store Simulations to HDF).