Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-04-11
AIPConf.Proc.921:490-491,2007
Astronomy and Astrophysics
Astrophysics
2 pages, 2 figures; to appear in the Proc. of the First Int. GLAST Symp. (Stanford, Feb. 5-8, 2007), eds. S.Ritz, P.F.Michelso
Scientific paper
10.1063/1.2757416
Diffuse emission is produced in energetic cosmic ray (CR) interactions, mainly protons and electrons, with the interstellar gas and radiation field and contains the information about particle spectra in distant regions of the Galaxy. It may also contain information about exotic processes such as dark matter annihilation, black hole evaporation etc. A model of the diffuse emission is important for determination of the source positions and spectra. Calculation of the Galactic diffuse continuum gamma-ray emission requires a model for CR propagation as the first step. Such a model is based on theory of particle transport in the interstellar medium as well as on many kinds of data provided by different experiments in Astrophysics and Particle and Nuclear Physics. Such data include: secondary particle and isotopic production cross sections, total interaction nuclear cross sections and lifetimes of radioactive species, gas mass calibrations and gas distribution in the Galaxy (H_2, H I, H II), interstellar radiation field, CR source distribution and particle spectra at the sources, magnetic field, energy losses, gamma-ray and synchrotron production mechanisms, and many other issues. We are continuously improving the GALPROP model and the code to keep up with a flow of new data. Improvement in any field may affect the Galactic diffuse continuum gamma-ray emission model used as a background model by the GLAST LAT instrument. Here we report about the latest improvements of the GALPROP and the diffuse emission model.
Digel Seth William
Moskalenko Igor V.
Porter Troy A.
Strong Andrew W.
No associations
LandOfFree
Developing the Galactic diffuse emission model for the GLAST Large Area Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Developing the Galactic diffuse emission model for the GLAST Large Area Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing the Galactic diffuse emission model for the GLAST Large Area Telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-672627