The COBE diffuse infrared background experiment search for the cosmic infrared background. II. Model of the interplanetary dust cloud

摘要

The COBE diffuse Infrared Background Experiment(DIRBE) was designed to search for the cosmic infrared background (CIB) radiation. For an observer confined to the inner solar system, scattered light and thermal emission form the interplanetary dust(IPD) are major contributors to the diffuse sky brightness at most infrared wavelengths. Accurate removal of this zodiacal light foreground is a neces- sary step toward a direct measurement of the CIB. The zodiacal light foreground contribution in each of the 10 DIRBE wavelength bands ranging from 1.25 to 240 μm is distinguished by its apparent seasonal variation over the whole sky.