Quenchings and Outbursts of Extragalactic Radio Sources: Nine Years of 3.3-mm Measurements and Comparisons with Centimeter-Wave Variations

The extragalactic variable radio sources 3C, 84, 3C 120, OJ 287, 3C 273, and BL Lac have been observed frequently at 3.3 mm for up to 9 years; the results are compared with 19-, 28-, 38-, and 45-mm observations. (1) The 3-mm variations are often rapid; significant information is lost if observations...

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