To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.
The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.
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cpflux: calculate photon flux
A convolution model to calculate the photon flux of other model components. For example :
cpflux*phabs*(pow + gauss)with the normalization of the power-law model fixed to a non-zero value gives the photon flux and error on the entire model.
phabs*cpflux*(pow + gauss)again with the normalization of the power-law fixed to a non-zero value gives the unabsorbed photon flux and error. Finally,
phabs*(pow + cpflux*gauss)with the normalizaton of the gaussian fixed to a non-zero value gives the photon flux and error on the gaussian component. Note that when the cpflux model is used the normalization of one of the additive models must be fixed to a non-zero value. It is also important to ensure that the energy range over which the model is calculated (which is determined by the response matrix in use) covers the energy range for which the photon flux is calculated. If the model to which the cpflux is applied integrates to zero then a divide-by-zero error will occur resulting in NaN values for the fit statistic.
Parameters are:
| par1=Emin | Minimum energy over which photon flux is calculated. |
| par2=Emax | Maximum energy over which photon flux is calculated. |
| par3=Flux | Photon flux in ph/cm /s |
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