[ExI] black biggies

[spike at rainier66.com]

OK I have an idea, but do be forewarned, it is a crazy one.

 

Imagine a big galaxy with monster black hole at the center (I don’t know if this part is necessary (but might help.)) This theoretical galaxy is a really flat disc galaxy such as ESO 510-G13 rather than an elliptical and has a reaaallly crazy-huge gaseous accretion disc.  Now imagine an ordinary tightly-bound pair of stars that somehow get into a highly elliptical orbit about that central black hole (I don’t have a clue how the pair would get into that kind of orbit, but imagine they did somehow.)

 

OK then.  During most of their orbit, they would be going slower than the more circular accretion disc, so gas would be catching up and falling into the pair.  When the pair is close to the central mass, it would be going faster and catching up on the gas in the disc, so stuff would still be falling into the pair.  They both grow that way, get really big, both go supernova and create ordinary black holes in a tight pair.  

 

OK, now imagine each of those two formed their own accretion discs out of the material in the bigger accretion disc in which they orbit.  Perhaps they could grow to be monsters, all the while bleeding away angular momentum with respect to each other from the absorbed gas and stuff from the big disc.  Then… they eventually grow to 66 and 85 and put on a spectacular show for us in 2020.

 

Just describing it makes the whole scenario seem even more far-fetched, but I need some kind of baseline notion or my sanity will flee like bats from a cave at dusk.

 

spike

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20200911/0176ad0f/attachment.htm>