Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sptz.prop80235t&link_type=abstract
Spitzer Proposal ID #80235
Physics
Scientific paper
The Cosmic Infrared Background (CIB) as an integrated history of the early universe is important for the study of the Dark Ages, and it may include the light from the first stars at z~10. However, previous CIB measurements suffer from residual contamination from the strong foreground emission (e.g. the zodiacal light). We propose to observe Ganymede eclipsed in the shadow of Jupiter at 3.6 microns to detect the absolute CIB intensity without any zodiacal light subtraction error. The zodiacal light originates inside the orbit of Jupiter; since Ganymede in eclipse shields all light beyond the Jovian orbit, it should be detected as a 'dark spot' if the strong CIB implied by previous observations exists. The intensity deficit of this dark spot relative to the surrounding sky directly measures the strength of the CIB, free from any assumptions about the zodiacal light. We have carefully considered the intensity of Jupiter and the issue of scattered light. The estimated point source "negative flux" is 0.67uJy at 3.6um, which can be detected with IRAC in two hours at 5-sigma with the estimated background.
Surace Jason
Tsumura Kohji
No associations
LandOfFree
Absolute Measurement of the Cosmic Infrared Background Using Ganymede as an Occulter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Absolute Measurement of the Cosmic Infrared Background Using Ganymede as an Occulter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absolute Measurement of the Cosmic Infrared Background Using Ganymede as an Occulter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1440045