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Title: Developing the Galactic Diffuse Emission Model for the GLAST Large Area Telescope

Abstract

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 g-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{sub 2}, H I, H II), interstellar radiation field, CR source distribution and particle spectra at the sources, magnetic field, energy losses, g-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 anymore » field may affect the Galactic diffuse continuum g-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.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
903007
Report Number(s):
SLAC-PUB-12467
arXiv:0704.1328; TRN: US0703228
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ANNIHILATION; ASTROPHYSICS; BLACK HOLES; CROSS SECTIONS; ELECTRONS; ENERGY LOSSES; EVAPORATION; MAGNETIC FIELDS; NONLUMINOUS MATTER; NUCLEAR PHYSICS; PROTONS; RADIATIONS; SPECTRA; SYNCHROTRONS; TELESCOPES; TRANSPORT; Astrophysics,ASTRO

Citation Formats

Moskalenko, Igor V., Strong, Andrew W., Digel, Seth W., and Porter, Troy A. Developing the Galactic Diffuse Emission Model for the GLAST Large Area Telescope. United States: N. p., 2007. Web. doi:10.2172/903007.
Moskalenko, Igor V., Strong, Andrew W., Digel, Seth W., & Porter, Troy A. Developing the Galactic Diffuse Emission Model for the GLAST Large Area Telescope. United States. doi:10.2172/903007.
Moskalenko, Igor V., Strong, Andrew W., Digel, Seth W., and Porter, Troy A. Mon . "Developing the Galactic Diffuse Emission Model for the GLAST Large Area Telescope". United States. doi:10.2172/903007. https://www.osti.gov/servlets/purl/903007.
@article{osti_903007,
title = {Developing the Galactic Diffuse Emission Model for the GLAST Large Area Telescope},
author = {Moskalenko, Igor V. and Strong, Andrew W. and Digel, Seth W. and Porter, Troy A.},
abstractNote = {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 g-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{sub 2}, H I, H II), interstellar radiation field, CR source distribution and particle spectra at the sources, magnetic field, energy losses, g-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 g-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.},
doi = {10.2172/903007},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}

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