https://en.wikipedia.org/wiki/Solar_luminosity

The solar luminosity, L ☉, is a unit of radiant flux conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in ...

https://en.wikipedia.org/wiki/Luminosity

In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object. As a term for energy emitted per unit time, luminosity is synonymous with power. In SI units luminosity is measured in joules per second or watts. ... The IAU has defined a nominal solar luminosity of 3.828×1026 W to promote ...

http://cfa-www.harvard.edu/~huchra/ay145/units.html

1 kg = 2.20462 lb; 1 Solar Mass = 1.9891x1033 gram = 1.9891x30 kg ... 1 Solar Luminosity = 3.826x1033 ergs/s = 3.826x26 Joules/s = 3.826x26 Watts; 1 Jansky  ...

http://www.astronomy.ohio-state.edu/~ryden/ast162_2/notes7.html

Jan 14, 2014 ... However, since stars are so very luminous, it is more convenient to measure their luminosities in units of the Sun's luminosity, 3.9 x 1026 watts.

https://www.britannica.com/science/luminosity

Luminosity: Luminosity, in astronomy, the amount of light emitted by an object in a unit of time. The luminosity of the Sun is 3.846 × 1026 watts (or 3.846 × 1033 ...

https://www.fxsolver.com/browse/formulas/Solar+luminosity

Solar luminosity is related to solar irradiance (the solar constant). ... Irradiance is defined as power per unit area, so the solar luminosity (total power emitted by ...

https://physics.tutorvista.com/light/luminosity.html

Luminosity in general is the measurement of brightness of an object or the amount of light radiated by it per unit time. It is measured in watts. Watt is a unit of  ...

http://www.ucolick.org/~bolte/AY4_04/class3_04bwb.pdf

How do we determine the luminosity of the. Sun? 1) Measure the Sun's ... ergs/ sec = 100 watts in the Infrared. ... What is the Solar Luminosity at the surface.

http://astronomy.swin.edu.au/cosmos/L/Luminosity

However, astronomers often prefer to state luminosities by comparing them with the luminosity of the Sun (approximately 3.9 × 1026 Watts). In this way, the ...

https://www.astronomynotes.com/starprop/s4.htm

Nov 2, 2010 ... The absolute magnitude is a measure of the star's luminosity---the total amount of energy ... One solar luminosity is about 4 × 1026 watts.