Round 2: Tossup 4

Given these particles’ mean lifetime of 880 seconds and the time from freeze-out to the onset of BBNS, one can calculate an abundance denoted Y. The timescale of these particles’ capture differentiates two reactions that occur in AGB stars and during supernovae, (-5[1])called the s- and r-processes. A different particle decays into one of these particles in the first step of the p-p chain. [emphasize] Above the Chandrasekhar (“chun-druh-SHAY-kur”) limit but below the TOV limit, these particles’ degeneracy pressure keeps massive stars from turning into black holes. (10[1])Pulsars (10[1])are (10[1])rapidly rotating members of a class of extremely dense stars made of these (10[1])particles. For 10 points, name these subatomic particles with no charge. (10[1])■END■

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