bolometric luminosity

Bolometric luminosity (L_Bol) is an astronomical body's total power output across all EMR wavelengths. A bolometer is a device that measures incoming EMR at all wavelengths (or at least over a significant wavelength-range), and luminosity is the power output of an astronomical body. The term luminosity generally means bolometric luminosity, i.e., when it is unqualified and when context does not imply otherwise. Bolometric magnitude is a kind of logarithmic measure of the same value (presuming the body's EMR output is isotropic, i.e., emitted equally in all directions).