Comparison between the angular resolution and rms noise (sensitivity) of the TGSS and wide-field meter and centimeter wavelength surveys. We define a wide-field survey as having observed more than 10 000 deg2 or more of the sky. Although the survey area of SUMSS is only 8100 deg2, it is included here since it provided much needed southern hemisphere coverage. Red symbols indicate meter wavelength surveys (ν< 300 MHz), while blue and green symbols are existing and planned centimeter surveys (ν> 300 MHz), respectively. Lines of constant surface brightness are shown in gray for a surface brightness sensitivity calculated as a function of resolution for 3×rms noise.
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