  This short note records an unusual situation with some Google Scholar's
profiles that imply the existence of "supernovae" articles, i.e., articles
whose impact -- in terms of number of citations -- in a single year gets
(almost) an order of magnitude higher than the previous year and immediate
drops (and remains steady) to a very low level after the next year. We analyse
the issue and resolve the situation providing an answer whether there exist
supernovae articles.
