NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
COBE DIRBE near-infrared polarimetry of the zodiacal light: Initial resultsThis Letter describes near-infrared polarimetry of the zodiacal light at 2.2 micrometers, measured with the Diffuse Infrared Background Experiment (DIRBE) aboard the Cosmic Background Explorer (COBE) spacecraft. The polarization is due to scattering of sunlight. The polarization vector is perpendicular to the scattering plane, and its observed amplitude on the ecliptic equator at an elongation of 90 deg and ecliptic longitude of 10 deg declines from 12.0 +/- 0.4% at 1.25 micrometers to 8.0 +/- 0.6% at 3.5 micrometers (cf. 16% in the visible); the principal source of uncertainty is photometric noise due to stars. The observed near-infrared colors at this location are redder than Solar, but at 3.5 micrometers this is due at least in part to the thermal emission contribution from the interplanetary dust. Mie theory calculations show that both polarizations and colors are important in constraining models of interplanetary dust.
Document ID
19950030780
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Berriman, G. B. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boggess, N. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hauser, M. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kelsall, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Lisse, C. M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Moseley, S. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Reach, W. T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Silverberg, R. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
August 10, 1994
Publication Information
Publication: The Astrophysical Journal, Part 2 - Letters
Volume: 431
Issue: 1
ISSN: 0004-637X
Subject Category
ASTRONOMY
Distribution Limits
Public
Copyright
Other