Thierry Louge / gammalib

Commit 4292eae17289edc62d3e2cdfebab0f41ed97f901

Authored by knodlseder
1 parent 6c5c214b

improve numerical Npred intergations to avoid Romberg integration convergence problems

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Showing 2 changed files with 14 additions and 3 deletions
ChangeLog
  View file @4292eae
1   -2011-08-04 Juergen Knoedlseder <knodlseder@cesr.fr>
  1 +2011-08-09 Juergen Knoedlseder <knodlseder@cesr.fr>
2 2  
3 3 * Version 0.4.11 released
4 4 =========================
5 5  
6 6 Add set response() to observation classes
7 7 Expose GCTAResponse::offset_sigma() in python
8   - GCTAResponse::aeff() no longer returns negative areas.
  8 + GCTAResponse::aeff() no longer returns negative areas
  9 + Improve Npred integration for extended sources in GCTAResponse
9 10 Implement environment variable expansion
10 11 Correctly fit unbinned for multiple observations
11 12 Add eflux() methods to spectral models
... ...
... ... @@ -2,7 +2,7 @@ New Features and Important Changes in GammaLib 00-04-11
2 2  
3 3 Author(s) : Juergen Knoedlseder
4 4  
5   -August 4, 2011
  5 +August 9, 2011
6 6  
7 7  
8 8 1. Introduction
... ... @@ -135,3 +135,13 @@ variables in the path are expanded.
135 135  
136 136 GCTAResponse::aeff() does no longer return negative effective area
137 137 that occurred when extrapolating below the low-energy threshold.
  138 +
  139 +The Npred computation has been improved in GCTAResponse for extended
  140 +sources so that Romberg integration convergence problems should no
  141 +longer occur. Integration will now be skipped for models that are too
  142 +far away from the ROI so that they can give any possible contribution.
  143 +Also, azimuthal model integration will be done over only the sector that
  144 +overlaps with the ROI+PSF radius. And finally, a simple Trapezoid rule
  145 +is used for small radial integration intervals in the PSF integration
  146 +(GCTAResponse::npsf).
  147 +
... ...