The 21-cm Signature Of The Early Radiation Sources

Details The 21-cm Signature Of The Early Radiation Sources The 21-cm Signature Of The Early Radiation Sources

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...7e..33c&link_type=abstract

The Universe at z > 6, 26th meeting of the IAU, Joint Discussion 7, 17-18 August 2006, Prague, Czech Republic, JD07, #33

Physics

Scientific paper

At the beginning of the reionization epoch, radiation sources produce fluctuations in the redshifted 21-cm background. We show that different types of sources (such as miniquasars, Pop II and III stars, supernovae, etc.) produce distinct signatures in the 21-cm signal radial profiles and statistical fluctuations, through which they can be identified. Further, we show that the 21-cm signal from X-ray emitting sources is much easier to observe than was expected, du to a previously neglected pumping mechanism.

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