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 Post subject: expanded ISRF data?
PostPosted: Thu Nov 18, 2010 1:29 pm 
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Joined: Thu Oct 28, 2010 11:34 am
Posts: 1
I'm interested in treating the ISRF as a source of background noise in the far-IR and Submm bands while observing distant galaxies and I was wondering if there was a way to expand the ISRF data to more wavelengths, as 56 data points does not supply adequate resolution for my analysis.
Is there a way to compute these new points using GALPROP?

Any guidance is much appreciated.

Thanks for your time!

Sean Denny
undergraduate researcher
UCSB


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 Post subject: Re: expanded ISRF data?
PostPosted: Thu Nov 18, 2010 3:05 pm 
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Joined: Wed May 17, 2006 2:35 pm
Posts: 19
Location: Santa Cruz, California
Hi Sean,

The ISRF supplied with GALPROP is provided in energy density units because that is what is used for IC gamma ray production using the angular averaged Compton scattering cross section. That means that it is integrated over 4pi sr and does not retain any angular information about the distribution of the photons on the sky. However, we do actually calculate all of the angular information using a separate code called FRANKIE, and use this when doing anisotropic IC calculations, it is just not currently provided because the total data files are quite large (> several GB for a full ISRF `model'). If you want to use the ISRF angular information as a background the FRANKIE code sky map output could be used, but we should discuss this in more detail since it is quite involved. You can email me: tporter@stanford.edu.

Troy

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Dr. Troy A. Porter
Hansen Experimental Physics Laboratory
452 Lomita Mall
Stanford University
Stanford, CA 94305


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