A XSPEC Composite Model Partial Flux Calculations

Thread starter Joe Prendergast
Start date Nov 27, 2024
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Flux calculation X-ray

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The discussion revolves around performing partial flux calculations using XSPEC with a model that includes a Gaussian component. The user, Joe, has successfully calculated the Gaussian flux contribution, which is 8.31189E-11 erg/s/cm^2, and the total flux of the model as 0.069691 photons (8.5637e-10 ergs/cm^2/s). Joe seeks guidance on converting the Gaussian flux value to counts per second per keV. The thread highlights the need for assistance in this specific conversion process. The conversation emphasizes the technical aspects of XSPEC modeling and flux calculations.

Nov 27, 2024

Joe Prendergast

TL;DR: XSPEC

Hello,
I am running a model in XSPEC: phabs*(pow + cflux*gaussian) on a WSL Ubuntu terminal.
The fit output shows lg10flux = -10.0803 which converts to a flux of 8.31189E-11 erg/s/cm^2. This is correct for the gaussian flux contribution.
The flux command produces:
0.069691 photons (8.5637e-10 ergs/cm^2/s)
This is correct for the entire model.
What I'd like to do is convert the gaussian flux of 8.31189E-11 erg/s/cm^2 to counts/s/keV.
Does anyone know how to do this?
Thanks,
Joe

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