Science Opportunities and Future Radio Telescopes: II. ... How is the Dark Matter halo distributed? ... Measure 3-D locations and motions; Model dark matter halos N-body integrations yield history/ future Dark Matter in Local Group full DM halos 50% DM halo N-body calculations: sensitive to dark matter halos Science with Current and Future National Radio Telescopes Constraints on radio observations Science with Current and Future Radio ...

... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...