Got some more for you: https://meetings.aps.org/Meeting/DPP21/Session/JP11.15 https://meetings.aps.org/Meeting/DPP21/Session/JP11.15 > Since cosmic rays are u

Got some more for you: https://meetings.aps.org/Meeting/DPP21/Session/JP11.15 https://meetings.aps.org/Meeting/DPP21/Session/JP11.15 > Since cosmic rays are unaffected by the galaxy’s gravity, they increase the buoyancy of the ISM. However, the cosmic ray fluid has a finite compressibility, increasing the energy required to form valleys. Linear theory suggests this compressibility dominates buoyancy, suppressing the instability. > To address this counterintuitive result, we run local simulations of injections of cosmic ray pressure in the galactic disk. This assumes a supernova as the source. If this physically motivated perturbation creates buoyant magnetic flux tubes, then it is likely the Parker instability can develop in the ISM even if instability criteria from linear theory are not met. https://en.wikipedia.org/wiki/Nova#Recurrent_nova https://en.wikipedia.org/wiki/Nova#Recurrent_nova https://www.syfy.com/syfy-wire/bad-astronomy-a-micronova-is-a-new-kind-of-stellar-explosion https://www.syfy.com/syfy-wire/bad-astronomy-a-micronova-is-...