We provide on the same directory several .arf files, corresponding to the on axis effective area for different extraction region radii. The number following the "_" symbol indicates the radius size in arcmin.
This is the first official release of these matrices, which will be followed by updates in the next few months.
The directory contains the following files:
hpgspc_ott98.arf HPGSPC effective area hpgspc_sep97.rmf HPGSPC redistribution matrix, 512 channels lecs_130_124_8_sep97.arf LECS arf files, 2,4,6,8 arcmin radius regions lecs_130_126_8_sep97.arf lecs_130_128_2_sept97.arf lecs_130_128_4_sep97.arf lecs_130_128_6_sep97.arf lecs_130_128_8_sep97.arf lecs_sep97.rmf LECS redistribution matrix, 1024 channels mecs1_2_sep97.arf MECS1 arf files, 2,3,4,6,8 arcmin radius regions mecs1_3_sep97.arf mecs1_4_sep97.arf mecs1_6_sep97.arf mecs1_8_sep97.arf mecs1_sep97.rmf MECS1 redistribution matrix, 256 channels mecs23_2_sep97.arf MECS23 arf files, 2,3,4,6,8 arcmin radius regions mecs23_3_sep97.arf mecs23_4_sep97.arf mecs23_6_sep97.arf mecs23_8_sep97.arf mecs2_2_sep97.arf MECS2 arf files, 2,3,4,6,8 arcmin radius regions mecs2_3_sep97.arf mecs2_4_sep97.arf mecs2_6_sep97.arf mecs2_8_sep97.arf mecs2_sep97.rmf mecs3_2_sep97.arf MECS3 arf files, 2,3,4,6,8 arcmin radius regions mecs3_3_sep97.arf mecs3_4_sep97.arf mecs3_6_sep97.arf mecs3_8_sep97.arf mecs3_sep97.rmf mecs_2_sep97.arf MECS arf files, 2,3,4,6,8 arcmin radius regions mecs_3_sep97.arf mecs_4_sep97.arf mecs_6_sep97.arf mecs_8_sep97.arf offaxis MECS offaxis arf files pds_256_sep97.rmf PSD redistribution matrix, 256 channels, arf included wfc1_iros_dec97.rmf WFC1 redistribution matrix wfc2_iros_dec97.rmf WFC2 redistribution matrix
Such matrixes yield less than 5% residuals on the Crab spectrum on the whole band of all NFIs. The figures below show the data/model ratio when a simple absorbed power-law model is applied to the Crab data:
The relevant values of equivalent hydrogen column density and photon spectral index are the following:
Detector | N_H (10**22; cm-2;) | Photon index | |
---|---|---|---|
LECS | 0.35 | 2.087 | |
MECS1 | 0.32 | 2.088 | |
MECS2 | 0.31 | 2.102 | |
MECS3 | 0.30 | 2.086 | |
HPGSPC | 0.3 (fixed) | 2.054 | |
PDS | - | 2.038 | |