- A center of persistent volcanism, thought to be the surface expression
of a rising hot plume of magma in a planetary
mantle (as seen, for example, on Earth and on Io).
Some hot spots are located on constructive
mrgins, such as Iceland; others occur within plates, for example
AND PLANETARY SCIENCE
- A small, bright region (also known as a bright spot) in a cataclysmic
binary, located either where the matter stream collides with the
outer edge of the accretion disk,
or at the inner edge of the disk.
- A small, radio-bright region in a lobe of a radio
galaxy, thought to be caused by high-speed material in a jet
colliding with boundary between the lobe and the intergalactic medium.