The Sun's luminosity over a complete solar cycle

  title={The Sun's luminosity over a complete solar cycle},
  author={Richard C. Willson and Hugh S. Hudson},
THE Active Cavity Radiometer Irradiance Monitor (ACRIM I), an instrument carried on NASA's Solar Maximum Mission satellite, measured the Sun's luminosity (total power outflow) from early 1980 to late 19891–5. Here we present the first account of the complete ACRIM I data set, and give evidence confirming our previous suggestion that solar luminosity varies with the 11-year solar cycle6. As previously reported, this slow variation closely follows statistical measures of the distribution of… Expand

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