Cooling Bound from SN 1987A Neutrinos in a Bounce Frame

This paper computes a specific neutrino quantity in a cosmology whose collapse is regulated by a maximum density, the Aldred Limit evaluated on its neutron branch at 9.72e+54 grams per cubic centimetre. The neutrinos from supernova 1987A arrived over about twelve seconds, in agreement with the standard cooling time of a newly formed neutron star. Any additional energy-loss channel that carried away a large fraction of the binding energy would have shortened the signal, which bounds exotic emission from the core. The calculation gives the following headline values: core_density_g_cm3 = 300000000000000.0, rho_ratio = 3.0871248894475397e-41, observed_duration_s = 12.0, events = 24, energy_loss_fraction_bound = 3.0871248894475397e-41, rhoA_g_cm3 = 9.717779835388742e+54. Each value is obtained from stated assumptions by the deposited script and is compared with published observational values where such values exist. Where the computed frame effect is far below observational reach, that negative result is stated plainly rather than softened. This study is simulated and computed from stated assumptions; it is not a measurement.