The Jansky or Jy has the units 10-26 Watts Metre-2 Hertz-1 or 10-26 W m-2 Hz-1
Radio sources of milliJanksy or mJy are routinely detected by modern radio telescopes.
Some common units are:
- nJy = 10-9 Jy
- μJy = 10-6 Jy
- mJy = 10-3 Jy
- kJy = 103 Jy
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