light curve
Technical term in astronomy: a graph of light intensity from a celestial object over time, used to study variable stars, eclipsing binaries, supernovae, etc.
Analyzing the light curve of a variable star reveals its physical properties.
The light curve of this supernova shows a typical Type Ia pattern.
Compound of 光度 (luminous intensity) + 曲線 (curve). A direct calque of English 'light curve'.