Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..470...27o&link_type=abstract
The 9th astrophysics conference: After the dark ages, when galaxies were young (the Universe at 2<Z<5). AIP Conference Proceedi
Astronomy and Astrophysics
Astrophysics
Origin And Formation Of The Universe, Background Radiations
Scientific paper
Observations of the cosmic microwave background will be an important ingredient in our efforts to understand the epoch of galaxy formation. Microwave background observations are most sensitive to physical conditions near the surface of last scatter, z~1100. MAP should enable cosmologists to infer many of the initial conditions for galaxy formation. The microwave background photons also illuminate the ``dark age''. Measurements of microwave background polarization can determine or at least constrain the redshift at which stars (or quasars) first reionize the universe. The observations are also sensitive to non-linear density fluctuations during this epoch. Microwave background measurements also probe the nearby universe. Low redshift objects produce additional fluctuations through gravitational lensing, the ISW effect and the Sunyaev-Zeldovich effect.
Oh Siang Peng
Spergel David N.
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