Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.7001c&link_type=abstract
American Astronomical Society Meeting 203, #70.01; Bulletin of the American Astronomical Society, Vol. 35, p.1316
Astronomy and Astrophysics
Astronomy
Scientific paper
Recent cosmic microwave background anisotropy results from the Wilkinson Microwave Anisotropy Probe suggest that the universe was reionized at a redshift around 20. Such an early reionization could arise through the ionizing radiation emitted by first stars at redshifts of 15 and higher. We discuss a possibility to detect the presence of such stars through measurements of the near-infrared background surface brightness spatial fluctuations. We show that the spatial clustering of these stars at tens of arcminute scales generates a contribution to the angular power spectrum of the IR anisotropies at the same angular scales and this excess can be potentially detected when resolved foreground galaxies out to a redshift of a few are removed from the clustering analysis. We are planning a rocket-based experiment for this purpose and we will discuss the extent to which first stars can be identified with the Near Infrared Fluctuation Experiment (NIFE) and ASTRO-F. The second half of the talk will discuss observational signatures of supernovae associated with the first star population.
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