Which Component in the Core of a Star Undergoing Helium

question 89

Multiple Choice

Which component in the core of a star undergoing helium fusion leads to the behavior known as the "helium flash"?

• A) neutrinos since it is this component that, in interacting with helium nuclei, triggers the helium flash
• B) helium since its density has to be above a certain limit to trigger this explosive event
• C) electrons since they control the pressure, and pressure does not depend on temperature (Under these conditions, build-up of heat can occur without leading to the normal gas expansion and the resulting thermal equilibrium.)
• D) remnant hydrogen since loss of this component allows uncontrolled helium burning rather than a uniform rate of energy production

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