Sunulmasn

Sunulmasn is a fictional solar phenomenon used in science fiction literature, tabletop role-playing games, and worldbuilding projects. It denotes a rare, short-lived surge in solar luminosity caused by a localized instability in a star’s outer layers, producing a bright coronal arc that can be visible from nearby planets for a few minutes. It is not a real astronomical term.

Etymology and in-universe usage: The term is an invention within the setting, blending elements from a constructed language used by in-universe astronomers with the English word sun. It is typically described as a distinct event separate from ordinary solar flares or coronal mass ejections.

Physical description: A sunulmasn is observed as a localized brightening in the star’s vicinity, often spanning the ultraviolet and visible bands, sometimes followed by an infrared glow as heated material re-radiates. It generally lasts from seconds to minutes and may be accompanied by minor particle ejections, but it does not involve the large-scale mass loss characteristic of a full flare.

Occurrence and significance: In the fictional universe, sunulmasns occur irregularly in mid-age sun-like stars and are used as markers of stellar activity cycles. They can influence planetary atmospheres and are considered in exoplanet habitability models within that setting.

Cultural and narrative role: The concept appears in multiple novels and RPG sourcebooks, where it serves as a plot device, a scientific puzzle, or a driver of speculative climate scenarios for neighboring worlds.