Interstellar Dust Emission as a CMBR Foreground
天体物理学
2007-05-23 v1
摘要
This chapter discusses Galactic dust and how its thermal emission confuses CMBR measurements. Interstellar dust grains are composed of many differing species, and observational evidence has only begun to disentagle their composition and sizes. Fortunately, their far-IR/millimeter emission is less complex. We describe how a very simple two-species model can describe the emission at 200 < nu < 3000 GHz to high precision. At lower frequencies, other non-thermal processes may dominate the emission from dust.
引用
@article{arxiv.astro-ph/9907307,
title = {Interstellar Dust Emission as a CMBR Foreground},
author = {D. P. Finkbeiner and D. J. Schlegel},
journal= {arXiv preprint arXiv:astro-ph/9907307},
year = {2007}
}
备注
Latex, paspconf style, 13 pages including 4 eps figures. The dust maps are available at http://astro.berkeley.edu/dust/