Delayed Detonation Thermonuclear Supernovae with an Extended Dark Matter Component

We present spherically symmetric simulations of the thermonuclear explosion of a white dwarf admixed with an extended component of fermionic dark matter, using the deflagration model with the deflagration-detonation transition. In all the dark matter admixed models we have considered, the dark matter is left behind after the explosion as a compact dark star. The presence of dark matter lengthens the deflagration phase to produce a similar amount of iron-group elements and more thermoneutrinos. Dark matter admixed models also give dimmer but slowly declining light curves, consistent with some observed peculiar supernovae. Our results suggest a formation path for dark compact objects that mimic sub-solar-mass black holes as dark gravitational sources.

Automated summary

The study involves spherically symmetric simulations of the thermonuclear explosion of a white dwarf mixed with fermionic dark matter, indicating that dark matter is left behind as a compact dark star after the explosion, lengthening the deflagration phase and producing more thermoneutrinos. Models with dark matter admixture show dimmer but slowly declining light curves, suggesting a potential formation pathway for dark compact objects.