[vsnet-alert 14871] Re: nova Mon 2012

[Seiichiro Kiyota]

Dear Kirill Sokolovsky,


Thank you for your information about Atel 4282.
Maximum (or bigining of outburst?) should be around Jun 22 that detected it in gamma-ray.


I also interested in optical observations around maximum.
This nova could be seen near horizon in twlilight sky on Jun 22 at hight latutude area of southern hemisphere (New Zealand?).



                                             Seiichiro Kiyota
                                             VSOLJ, Japan


(2012/08/20 19:41), Kirill Sokolovsky wrote:
> Dear everyone,
>
> let me also draw your attention to the fact, that Nova Mon 2012 is likely the third classical nova detected in GeV gamma-rays (ATel #4310; http://www.astronomerstelegram.org/?read=4310 ) the other two
> being Nova Sco 2012 (ATel #4284; http://www.astronomerstelegram.org/?read=4284 )
> and V407 Cyg in 2010 (Abdo et al. 2010 Science, 329, 817 ; http://arxiv.org/abs/1008.3912 ).
>
> The gamma-ray emission of classical novae is new and very interesting field of investigation. The big question: why do we see some classical novae in gamma-rays but not other, apparently similar,
> novae is open.
> After the 2010 V407 Cyg event, there was the assumption that gamma-ray emission may be generated, if nova erupts in a symbiotic binary system, through the interaction of the nova shell with the red
> giant wind.
> But the recent identifications of Nova Mon 2012 and Nova Sco 2012 (that do not seem to be symbiotic systems) with gamma-ray transients seems to defy this assumption.
>
> It would be great if someone could determine or at least constrain Nova Mon 2012 explosion date with optical satellite observations. Also both
> Nova Mon 2012 and Nova Sco 2012 deserve detailed photometric and spectroscopic investigation.
>
> With best wishes,
> Kirill Sokolovsky