Peter Clark; Kate Maguire; Cosimo Inserra; Simon Prentice; Stephen J Smartt; Carlos Contreras; Griffin Hossenizadeh; Eric Y Hsiao; Erkki Kankare; Mansi Kasliwal; Peter Nugent; Melissa Shahbandeh; Charles Baltay; David Rabinowitz; Iair Arcavi; Chris Ashall; Christopher R Burns; Emma Callis; Ting-Wan Chen; Tiara Diamond; Morgan Fraser; D Andrew Howell; Emir Karamehmetoglu; Rubina Kotak; Joseph Lyman; Nidia Morrell; Mark Phillips; Giuliano Pignata; Miika Pursiainen; Jesper Sollerman; Maximilian Stritzinger; Mark Sullivan; David Young
This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.8 +/- 0.9 d to reach a peak brightness of -19.70 +/- 0.02 mag in ...