The 21cm Signal
The 21cm Signal
The 21cm Signal
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Global <strong>Signal</strong>s<br />
A single dish telescope<br />
(EDGES): measure the<br />
global signal as function<br />
of frequency.<br />
An interferometer<br />
(LOFAR, MWA, GMRT):<br />
measures the <strong>21cm</strong> (rms)<br />
fluctuations.<br />
fluctuations<br />
Peak of fluctuations:<br />
xHII~0.6-0.7 HII~0.6-0.7<br />
(3’ resolution).<br />
425/h Mpc simulation<br />
3’, 0.5 MHz resolution<br />
26 April 2012 EoR2012, Strasbourg 16
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