文档介绍：Adv. Space Res. Vol. 11, No. 2,pp. (2)181—(2)191. 1991 0273—1177/9! $ + .50
Printed in Great Britain. 1991 COSPAR
EARLY RESULTS FROM THE
COSMIC BACKGROUND EXPLORER
(COBE)
J. C. Mather,* M. G. Hauser,* C. L. t,*
N. W. Boggess,* E. S. Cheng,* R. E. Eplee, Jr.,*
H. T. Freudenreich,* R. B. Isaacman,* T. Kelsall,*
C. M. Lisse,* S. H. Moseley, Jr.,* R. A. Shafer,*
R. F. Silverberg,* W. J. Spiesman,* G. N. Toller,*
J. L. Weiland,* S. Gulkis,** M. Jansssen,** P. M. Lubin,***
S. S. Meyer,t R. Weiss,t T. L. Murdock4 0. F. Smoot,~
D. T. Wilkinson(I and E. L. Wright~J
* Laboratory for Astronomy and Solar Physics,
Goddard Space Flight Center, Greenbelt, MD 20771,
E-mail MA THER ***@STARS. GSFC. NASA. GOV, .
**Jet Propulsion Laboratory, MS 169—506, 4800 Oak Grove Drive,
Pasadena, CA 91109, .
***UCSB Department of Physics, Go/eta, CA 93106, .
tRoom 20F-001, Department of Physics, Massachusetts
Institute of Technology, Cambridge, MA 02139, .
~General Research Corporation, 5 Cherry Hill Drive, Suite 220, Danvers,
MA 01923, .
§Lawrence Berkeley Laboratory, 50-232, University of California. Berkeley,
CA 94720, .
~Department of Physics, fadwin Hall, Box 708, Princeton University,
Princeton, NJ 08544, . A.
¶UCLA Department of Astronomy, Los Angeles, CA 90024—1562, .
Abstract. The Cosmic Background Explorer, launched November 18, 1989, has nearly
completed its first full mapping of the sky with all three of its instruments : a Far In-
frared Absolute Spectrophotometer (FIRAS) covering to 10 mm, a set of Differential
Microwave Radiometers (DMR) operating at , , and mm, and a Diffuse Infrared
Background Experiment () spanning 1 to 300 jim in ten bands. A preliminary
map of the sky derived from DIRBE data is presented. Initial cosmological implications
include a limit on ptonization y parameter of i0~, on the chemical potential ~u
parameter of 10—2, a strong limit on the