Support #1719
ics & pi0 maps
| Status: | Closed | Start date: | 03/01/2016 | ||
|---|---|---|---|---|---|
| Priority: | Normal | Due date: | |||
| Assigned To: |  Knödlseder Jürgen | % Done: | 90% | ||
| Category: | - | ||||
| Target version: | - | ||||
| Duration: |
Description
Dear the system admin
Hi, my name is Tan. I have a question about the Inverse Compton Scattering (ics) & pi0 maps in the GPS script (which is putted on the following site). Can you tell me the origin of these maps? What models are used in these maps?
https://portal.cta-observatory.org/WG/PHYS/SitePages/PHYS-KSP-GPS.aspx
On the other hand, I see that the XML files of these maps (model_pi0.xml & model_ics.xml) have almostly the same form (such as Index, Scale, Prefactor). Are these parameters appropriate?
Thank you for reading me.
Tan
Recurrence
No recurrence.
History
#1
Updated by Knödlseder Jürgen over 8 years ago
- Status changed from New to Feedback
- Assigned To set to Knödlseder Jürgen
- % Done changed from 0 to 90
Sorry for coming back to you so late, I somehow forgot about your question.
Both models come from GALPROP (run 54_77Xvarh7S) in which the cosmic-ray electron spectrum has been adjusted to agree with that measured by the Fermi/LAT, see Abdo et al. 2009, PhRvL, 103 1101. The highest energy in this map is 0.868 TeV. The map has been extrapolated over the energy range assuming a spectral power law with index of -2.7. The same is true for the Pion map (that’s why you see identical spectral laws).
More information on the GPS is now here (you may need to log-in to see that page): https://cta-gitlab.irap.omp.eu/jknodlseder/cta/tree/master/analysis/ksp/gps.
#2
Updated by Dang Viet Tan over 8 years ago
Thank you for your answer.
How about the bremsstrahlung? Is it possible to put the bremsstrahlung map into ctools? I think it’s necessary for studying on the low energy range.
#3
Updated by Knödlseder Jürgen over 8 years ago
The maps are not formally part of ctools. I’m not sure that Bremsstrahlung plays an important role in the TeV domain, it even is barely important for GeV energies (but important for MeV energies).
#4
Updated by Knödlseder Jürgen over 8 years ago
- Status changed from Feedback to Closed