Round 2: Tossup 4

Given these particles’ mean lifetime of 880 seconds and the time from freeze-out (10[1])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 (10[1])during supernovae, (10[1])called the s- and r-processes. A different particle decays into one of these particles (10[1])in the first step of the p-p chain. (-5[1])[emphasize] Above the Chandrasekhar (“chun-druh-SHAY-kur”) limit but below the TOV limit, these particles’ degeneracy (-5[1])pressure (10[1])keeps massive stars from turning into black holes. Pulsars are rapidly rotating members of a class of extremely dense stars made of these particles. (10[2])For 10 points, name these subatomic particles with no charge. ■END■ (10[2])

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