Speaker
Dr
Hiroyuki Tashiro
(Institut d'Astrophysique Spatiale, University of Paris-Sud 11)
Description
The cosmic microwave background (CMB) and the 21-cm line fluctuations
are powerful probes for cosmological reionisation. We study the
potential of the cross-correlation between the CMB anisotropy and the
21 cm line fluctuations to obtain further understanding of the
reionisation history. We calculate a signal-to-noise ratio for 21-cm
surveys, LOFAR, MWA and SKA, with the CMB observation, Planck.
For the cross-correlation between 21-cm fluctuations and the CMB
temperature, the cross-correlation signal from the instant
reionisation can be detected with a significant level; SN ratio $\sim 1$
for LOFAR and SN ratio $\sim 10$ for SKA. On the other hand, the detection
of the 21-cm cross-correlation with CMB polarisation is difficult for
current observation plans.
Primary author
Dr
Hiroyuki Tashiro
(Institut d'Astrophysique Spatiale, University of Paris-Sud 11)
