Local Signal Impedes the Definition of the Cosmic Infrared Background

Details Local Signal Impedes the Definition of the Cosmic Infrared Background Local Signal Impedes the Definition of the Cosmic Infrared Background

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543706k&link_type=abstract

American Astronomical Society, AAS Meeting #215, #437.06; Bulletin of the American Astronomical Society, Vol. 42, p.391

Astronomy and Astrophysics

Astronomy

Scientific paper

It was noted (ApJ 508, 44, 1998) when developing a COBE/DIRBE-data-based model for the infrared (IR) signal from the interplanetary dust cloud (IPD) that there were clear evidences of unexpected time-variable wavelength-dependent signals in all the ten DIRBE bands (1.2 to 240 μm). The amplitudes of these signals range in magnitude from the order of one-half to a few percent of the respective-wavelength IPD signal. This presentation provides selected details on the nature of these signals as regards their wavelength-dependent periodicities, time-variable amplitudes, and complex spatial configurations. Particular attention is devoted to describing the consequences imposed by these signals which impede the observational determination of and/or the setting of limits on the cosmic IR background.

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