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Recurrent Nova M31N-2008-12a

7 Dec 2017, 21:57 UTC
Recurrent Nova M31N-2008-12a
(200 words excerpt, click title or image to see full post)

On July 15th, 2015 I wrote a blog entry about RNe M31N-2008-12a, a recurrent nova in our neighboring galaxy Messier 31, the Andromeda Galaxy LINK. Well its fall now, and either in the midst of or past what should be the expected annual or six month outburst for this ever increasing White Dwarf as it feeds mass from it's Red Giant Star companion. This table will show the expected time frames when this binary WD (White Dwarf) and RGC (Red Giant Companion) are expected to have an outburst. The -a after the year is when the first outburst is expected, based on data, though never observed or confirmed by observation yet. The -b are the second or annual outburst that have been observed and recorded since 2008 and also confirmed via archival data from 1992, 1993 and 2001.You can see here, that based on data gathered by observations made by Chandra, the KisoSchmidt Telescope, the Okayama Telescope, the MiyakiArgenteus Observatory, all in Japan; the Xingming Observatory, China; the Ondˇrejov Observatory, Czech Republic; Montsec Observatory, Spain; and the Kitt Peak Observatory, USA, that the observed time between measured outbursts is 351 ± 13 days though the team led by M.J. Darnley ...

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