Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-10-20
Astronomy and Astrophysics
Astrophysics
8 pages Latex with 3 Postscript figures embedded using epsf
Scientific paper
10.1086/309927
A major goal of cosmology is to obtain sensitive, high resolution maps of the Cosmic Microwave Background (CMB) anisotropy. Such maps, as would be produced by the recently proposed Microwave Anisotropy Probe (MAP), will contain a wealth of primary information about conditions in the early universe. To mitigate systematic effects when observing the microwave background, it is desirable for the raw data to be collected in differential form: as a set of temperature differences between points in the sky. However, the production of large (mega-pixel) maps from a set of temperature differences is a potentially severe computational challenge. We present a new technique for producing maps from differential radiometer data that has a computational cost that grows in the slowest possible way with increasing angular resolution and number of map pixels. The required central processor (CPU) time is proportional to the number of differential data points and the required random access memory (RAM) is proportional to the number of map pixels. We test our technique, and demonstrate its feasibility, by simulating one year of a space-borne anisotropy mission.
Bennett Charles L.
Hinshaw Gary
Wright Edward L.
No associations
LandOfFree
Producing Mega-pixel CMB Maps from Differential Radiometer Data 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 Producing Mega-pixel CMB Maps from Differential Radiometer Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Producing Mega-pixel CMB Maps from Differential Radiometer Data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-587357