Light curve
Videos
In astronomy, a light curve is a graph of the light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y-axis and with time on the x
Light curve of δ Cephei showing magnitude versus pulsation phase
Light curve of exoplanet TOI-5293Ab taken through a red filter and an amateur telescope. Credit: Jeff Lesperance
Gravitational microlensing
Videos
Gravitational microlensing is an astronomical phenomenon caused by the gravitational lens effect. It can be used to detect objects that range from the mass of a planet to the mass of a star, regardles
Light curve
…other periodic variables, and transiting extrasolar planets; or aperiodic, like the light curve of a nova, cataclysmic variable star, supernova, microlensing event, or binary as observed during occultation events. The study of a light curve and other observations can yield considerable information about the physical…
The object causing the microlensing in NGC 6553 bent the light of a red giant star in the background.
A Horseshoe Einstein Ring from Hubble
PDS 70