The neutrino mechanism of propagation of thermonuclear burning in degenerate cores of stars.
Abstract
An approximate model is constructed, with neglect of motion of matter, of the propagation of the thermonuclear burning front in degenerate carbon cores of stars. It is shown that the propagation of carbon burning ignited by neutrinos reaches an infinite velocity in a finite time (the sharpening time). The sharpening time, tf, is compared with the characteristic hydrodynamic time, tH, of the star for a central density of 30 billion g/cu cm. The equality tf = tH is regarded as a sufficient condition for the occurrence of the supersonic regime of thermonuclear carbon burning. If the central density is less than 30 billion g/cu cm, then tf is greater than tH, supersonic burning does not occur, and the process takes place in the subsonic regime.
- Publication:
-
Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki
- Pub Date:
- October 1978
- Bibcode:
- 1978ZhETF..75.1169Z
- Keywords:
-
- Carbon;
- Core Flow;
- Neutrinos;
- Stellar Structure;
- Thermonuclear Reactions;
- Approximation;
- Degeneration;
- Hydrodynamic Equations;
- Shock Heating;
- Shock Wave Propagation;
- Stellar Models;
- Subsonic Flow;
- Astrophysics;
- Neutrinos:Stellar Interiors