Characteristic Strain of the Nanohertz Background in the Bounce Frame

This paper asks a single question: How large is the nanohertz characteristic strain if the published common-process amplitude is read through a bounce cosmology, and where does the bounce contribution sit relative to the astrophysical signal? Working from the published common-process amplitude of 2.4e-15 in characteristic strain at one cycle per year and the standard binary spectral index of thirteen thirds, the study computes the relevant quantities by a bounce-frame rescaling of the characteristic-strain spectrum h_c(f)=A (f/f_yr)^(-2/3). The headline computed values are A_ref = 2.4e-15, h_c_at_10nHz = 5.177760169452975e-15, omega_at_10nHz = 3.4232658889151874e-09, ratio_bounce_to_ref = 1.1. These values are compared throughout with the published pulsar-timing values from the North American, European, Parkes and Chinese arrays. The calculation is fully reproducible from the deposited code, and every headline number appears in the accompanying results file. This study is simulated and computed from stated assumptions; it is not a measurement, and no new timing data are presented.