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Flux Density of Virgo A at 20 MHz

-- kenyon | February 27, 2023

Question:

I am calibrating my radio-skypipe and want to know the average radio brightness in Deg K of Virgo A

-- kenyon

Answer:

Based on the flux density scale for frequencies from 50 MHz to 50 GHz derived by Perley & Butler (2017), I believe that the flux density of Virgo A is about 4860 Jy at 20 MHz, which is I believe the central frequency at which the Radio Jove system observes. You can convert to a brightness temperature using the standard conversion between flux density and brightness temperature and the detailed beam width characteristics of your antenna. Your Radio Jove documentation should have this information.

-- Jeff Mangum

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