What mass limit must a white dwarf exceed to trigger a Type Ia supernova?

Answer

The Chandrasekhar Limit (approximately 1.4 times the mass of the Sun)

When a white dwarf in a binary system accretes enough mass to surpass the Chandrasekhar Limit, the degeneracy pressure fails, initiating runaway thermonuclear fusion throughout the star.

What mass limit must a white dwarf exceed to trigger a Type Ia supernova?
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