Recurrent Nova V2487 Oph Had Superflares in 1941 and 1942 With Radiant
Energies 10$^{42.5\pm1.6}$ Ergs
Recurrent Nova V2487 Oph Had Superflares in 1941 and 1942 With Radiant
Energies 10$^{42.5\pm1.6}$ Ergs
V2487 Ophiuchi (V2487 Oph) is a recurrent nova with classical nova eruptions in 1900 and 1998, and it is also the most extreme known superflare star. These superflares are roughly-hour-long flares with amplitudes and optical energies reaching up to 1.10 mag and $10^{39.21}$ ergs, with the superflares recurring once-a-day. The …