thermonuclear flash deraxš-e garmâhaste-y Fr.: flash thermonucléaire A theoretical interpretation for the → X-ray bursts observed toward → low-mass X-ray binary (LMXB) stars. According to models, X-ray bursts are produced on the surface of → neutron stars as a result of violent thermonuclear processes in a → hydrogen or → helium rich → layer. It is the → nuclear energy released in the → fusion of hydrogen and helium to heavier elements (e.g., Ni, Zn, and Se) in the → accreted matter which heats the upper layers of the neutron star so that X-rays are emitted from the surface (see, e.g., Taam, R.E., 1984, AIP Conf. Proc. 115, 263). → thermonuclear; → flash. |
thermonuclear reaction vâžireš-e garmâhaste-yi (#) Fr.: réaction thermonucléaire A nuclear reaction in which two or more atomic nuclei fuse into a single heavier nucleus by a collision of the interacting particles at extremely high temperatures. Chains of thermonuclear reactions, such as the → proton-proton chain and the → CNO cycle, account for the energy radiated from the Sun and more massive stars. |
thermonuclear runaway vâžireš-e garmâhaste-yi-e legâm gosixté Fr.: emballement thermonucléaire 1) The uncontrolled → fusion of hydrogen into helium. → thermonuclear; → runaway. Vâžireš, → reaction; garmâhaste-yi, → thermonuclear; legâm gosixté literally "rampant, unrestrained," from legâm "bridle, rein" + gosixté "broken off, torn away," p.p. of gosixtan "to tear away, to break off." |
thermonuclear supernova abar-now-axtar-e garmâtavânik Fr.: supernova thermonucléaire Same as → type Ia supernova → thermonuclear; → supernova. |