Great presentation, very informative! I'm looking forward to seeing this happen in the next few weeks. My theory is that the white dwarf's orbit is gradually decaying because of friction with the accretion disk and outer atmosphere of the red giant. Once it accretes enough material for fusion, the nova annihilates the accretion disk and outer layer of the red giant's atmosphere, except for the material opposite the white dwarf. Half an orbit later the white dwarf reaches the remaining material and it accretes onto the still fusion-hot white dwarf's surface and creates smaller secondary novae. The reflected shockwaves from the novae push the white dwarf back into a higher orbit. 40 years later the atmosphere and disk return and the friction starts again. Repeat ad infinitum.
oh my goodness, I'm so glad I watched this today (4/25/24), the last pieces of my telescope are coming in today, I'll get started monitoring this as soon as I'm able
Anybody know if the star was visible? I was watching all through August, and September and I'm kinda thinking it's in the southern hemisphere now. Maybe it happened on a cloudy day? My internet searches have come up with cobwebs! Thank you for your help!
In the phased-binned graph, the second rise is wider than the pure sine wave indicating that one end on the red giant is larger than the other end. It's a rain-drop shape, likely with the wide end farthest from the white dwarf star. In the orbital period change, if the Nova was one sided - pointing at the red giant - it would act like a jet and push the white dwarf away ... but it slowly comes back, pulled in by the gravitational attraction of the giant..
Excellent!!!
Are there any updates of the estimates? How do the current B &V values look like?
Great presentation, very informative! I'm looking forward to seeing this happen in the next few weeks.
My theory is that the white dwarf's orbit is gradually decaying because of friction with the accretion disk and outer atmosphere of the red giant. Once it accretes enough material for fusion, the nova annihilates the accretion disk and outer layer of the red giant's atmosphere, except for the material opposite the white dwarf. Half an orbit later the white dwarf reaches the remaining material and it accretes onto the still fusion-hot white dwarf's surface and creates smaller secondary novae. The reflected shockwaves from the novae push the white dwarf back into a higher orbit. 40 years later the atmosphere and disk return and the friction starts again. Repeat ad infinitum.
Thank you so much for this great presentation !
Excellent - watched it live. Need to monitor this one!
Thanks Dr Schaefer. Great piece of research. Thanks for sharing.
oh my goodness, I'm so glad I watched this today (4/25/24), the last pieces of my telescope are coming in today, I'll get started monitoring this as soon as I'm able
Anybody know if the star was visible? I was watching all through August, and September and I'm kinda thinking it's in the southern hemisphere now. Maybe it happened on a cloudy day? My internet searches have come up with cobwebs! Thank you for your help!
In the phased-binned graph, the second rise is wider than the pure sine wave indicating that one end on the red giant is larger than the other end. It's a rain-drop shape, likely with the wide end farthest from the white dwarf star.
In the orbital period change, if the Nova was one sided - pointing at the red giant - it would act like a jet and push the white dwarf away ... but it slowly comes back, pulled in by the gravitational attraction of the giant..
7/5/24 7:01pm
I'm doing a study on something related to this and this is very helpful!
Wouldn't be the first report from an X-ray satellite of an outburst?