Feature #2455
Implement a time dependent spectral model
| Status: | New | Start date: | 04/19/2018 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned To: | - | % Done: | 0% | |
| Category: | - | |||
| Target version: | - | |||
| Duration: |
Description
Implement a spectral model that depends on time. The model should be defined by a two-dimensional table that provides spectral vectors, like a filefunction, as fonction of time. The input data should be provided as FITS file.
Recurrence
No recurrence.
History
#1
Updated by Knödlseder Jürgen over 6 years ago
It should be checked with the CTA GRB people in which format their data are (→ Ghirlanda). It should also be checked with the AGN people that the format is okay for them.
The idea would be to have spectral vectors as function of time, hence a table F(\nu, t), stored in a FITS file.
A possible format would be a vector column to store the data, and a time column to store the time nodes for which the data are valid. As usual, times should be in seconds, counted from a reference time that is stored in the FITS file header. A second ENERGIES extension would then define the energy nodes for the table.
Alternatively, one could store the spectral information as rows, and have the time information as the elements of a vector. One would then store the energy nodes in a column, and have a TIMES extension to define the time nodes. The advantage of this data model is that it also could be used for time-independent file functions. In that case the vector dimension would be 1, and there won’t be a time extension.
#2
Updated by Knödlseder Jürgen about 6 years ago
- Target version deleted (
1.6.0)