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luminosity

noun

  1. total amount of energy emitted by an object per unit time
L228206 on Wikidata ↗

Wiktionary

noun

Etymology: Borrowed from French luminosité or else a native formation from luminous + -ity.

  1. the state of being luminous, or a luminous object; brilliance or radiance

    They reported encountering a luminosity of great intensity and loving angelic beings.

  2. the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
  3. The rate at which a star radiates energy in all directions.

    We recognize the same pattern as in the left panel, with dM stars being much less frequent flarers than dMe stars of similar luminosity.

    We derive rotation periods, photometric activity indices, flaring energies, mass loss rates, gyrochronological ages, X-ray luminosities and consider implications for the planetary magnetospheres and habitability.