The current version is science tools v9r23p1. 

The Fermi Science tools have been updated to run on systems with gcc 4
compilers. We have tested this on Scientific Linux 5, Fedora 13 & 14,
Ubuntu 9.10, 10.04 & 10.10, OSX-ppc Leopard, OSX-intel Leopard, OSX-intel
Snow Leopard, for 32 and 64 bit OS's where available.

In addition to the source tarfile and the prebuilt binaries for the
above systems we are also including binaries without the ROOT
plotting and GUI package for those users where this causes problems. 


=======================================================================
The tools have been updated to use the P6_V11 instrument response functions. 


Likelihood Package


gtexpcube2

The new gtexpcube2 tool replaces the old gtexpcube application
from the map_tools package, and it also replaces the "on-the-fly"
binned exposure map calculation that was provided by gtsrcmaps. 

The new gtexpcube2 tool accounts for the azimuthal variation of the
effective area for the irfs that implement this dependence (e.g.,
P6_v11_* ).  Note: To use the azimuthal dependence the livetime cube
must be generated with the parameter phibins different from 0.  The
gtexpcube2 tool also includes effects of the livetime-fraction
dependent efficiency that has been available for the P6_V11_DIFFUSE
irfs and will continue to be available in future irfs.

It is strongly recommended that the old gtexpcube application not
be used for Likelihood analysis any longer. 


gtsrcmaps

In gtsrcmaps, a 10 degree source region is added to the predicted
counts maps prior to convolution with the PSF in order to account for
leakage into the ROI. If an exposure map has a geometry that matches
the counts map, this will force the evaluation of the exposure outside
of the exposure map itself. Therefore, the proper way to handle a
binned analysis is to define an exposure map that includes this extra
source region. An all-sky map is usually the most convenient way to do
this. If the exposure map geometry matches the counts map geometry,
then the new default mode of operation of gtsrcmaps is to halt
execution and print a warning:

% gtsrcmaps
Exposure hypercube file[ltcube.fits] 
Counts map file[ccube_9.fits] 
Source model file[srcModel_egretdiffuse.xml] 
Binned exposure map[bexpmap_9.fits] 
Source maps output file[smaps_9.fits] 
Response functions[P6_V3_DIFFUSE] 
Generating SourceMap for EGRET DiffuseCaught St13runtime_error at the top level: 
Request for exposure at a sky position that is outside of the map boundaries.

The contribution of the diffuse source outside of the exposure 
and counts map boundaries is being computed to account for PSF 
leakage into the analysis region.  To handle this, use an all-sky
binned exposure map.  Alternatively, to neglect contributions 
outside of the counts map region, use the emapbnds=no option when 
running gtsrcmaps.
%