A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of...

less dramatic event in the normal evolution of solar-mass stars, the "helium flash". Chemical reactions involving thermal runaway are also called thermal...

brightest nova of this millennium, reaching magnitude 3.3. A helium nova (undergoing a helium flash) is a proposed category of nova event that lacks hydrogen...

called the first giant branch, is the portion of the giant branch before helium ignition occurs in the course of stellar evolution. It is a stage that follows...

sufficient helium in its core to ignite it. In stars around the mass of the Sun, this begins at the tip of the red giant branch with a helium flash from a...

so-called helium flash. In more-massive stars, the collapsing core will reach 108 K before it is dense enough to be degenerate, so helium fusion will...

pressure, helium fusion will ignite on a timescale of days in a helium flash. In the nondegenerate cores of more massive stars, the ignition of helium fusion...

rocks Helium fusion, a type of nuclear fusion in stars Helium flash, the sudden beginning of helium fusion in certain kinds of stars Isotopes of helium Helium-3...

up and eventually the helium shell ignites explosively, a process known as a helium shell flash. The power of the shell flash peaks at thousands of times...

but much happens. First, the core (full of degenerate helium) ignites violently in the helium flash; it is estimated that 6% of the core—itself 40% of the...