Sub-degree CMB anisotropy from space. I. Sky coverage and sensitivity.

Details Sub-degree CMB anisotropy from space. I. Sky coverage and sensitivity. Sub-degree CMB anisotropy from space. I. Sky coverage and sensitivity.

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..117..569m&link_type=abstract

Astronomy and Astrophysics Supplement, v.117, p.569-582

Astronomy and Astrophysics

Astrophysics

1

Cosmic Microwave Background, Space Vehicles, Cosmology: Observations

Scientific paper

Decisive progress in cosmology is expected from a space mission dedicated to an extensive mapping of the Cosmic Microwave Background (CMB) with high angular and temperature sensitivity. Based on the European Space Agency COBRAS/SAMBA mission concept, we have studied the attainable sensitivity and sky coverage taking into account the effect of solar-system sources for the two far-Earth candidate orbits (Lagrangian points Moon-Earth L5 and Sun-Earth L2). We also take into account the microwave emission of the Galaxy in limiting the useful sky coverage. Our results provide a quantitative assessment of the relative observational merits of the two orbit options, and show that the Sun-Earth L2 orbit allows significantly better observational conditions.

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