The presence of neutral hydrogen in galaxies will be observed with the SKA through the redshifted 21cm line that has a rest-frame frequency of 1420 MHz. If we want to observe a galaxy that is at redshift z=0.5, at which frequency would we need to look for its neutral hydrogen line?
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The presence of neutral hydrogen in galaxies will be observed with the SKA through the redshifted 21cm line that has a rest-frame frequency of 1420 MHz. If we want to observe a galaxy that is at redshift z=0.5, at which frequency would we need to look for its neutral hydrogen line?
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