fast nova

fast nova

See nova.

fast nova

[¦fast ′nō·və]
(astronomy)
A nova whose brightness rises quickly to a maximum, remains near maximum for a short time, and then decreases to the original value in a few years or less.
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References in periodicals archive ?
A fast nova drops by 3 magnitudes from maximum within 100 days, while it takes 150 days or more for a slow nova to dim by the same 3 magnitudes.
But U Scorpii is an exceptionally fast nova, rising and starting to fade in just hours.
A fast nova can fade by that amount in as little as four days (as did Nova Cygni 1975 and Nova Herculis 1991), while a slow nova can take more than three months.