Data release for "Scalar fields around black hole binaries in LIGO-Virgo-KAGRA"

This is the data release for Scalar fields around black hole binaries in LIGO-Virgo-KAGRA arXiv:2510.17967 This release contains the processed data products and analysis scripts used to produce the figures in the paper. The analysis first performs an agnostic search for scalar-field environmental effects in selected binary black-hole events from the GWTC-3 catalog. Using the scalar environment waveform model, we infer the average scalar-field density around each binary and obtain upper limits for most events. Among the analyzed events, GW190728 and GW190814 show the support for nonzero scalar-field density. This release focuses in particular on GW190728. For this event, we provide the data and scripts used to study both the agnostic scalar-environment interpretation and the superradiance-motivated interpretation. In the superradiance case, the analysis imposes physically motivated priors on the scalar coupling $\alpha$, cloud density $\rho_\phi$, scalar mass $m_\phi$, and cloud mass $M_\rm{cloud}$ based on the superradiant growth and annihilation timescales. The time delay $\tau_d$ between black-hole formation and merger is assumed to lie between the superradiant growth timescale and the cloud annihilation timescale, ensuring that the scalar cloud can both form efficiently and survive until the observed gravitational-wave event. The corresponding notebooks reproduce the posterior distributions and figures for the inferred scalar-field density, boson mass, and scalar-cloud mass fraction. PlotResults.ipynb: reproduces the main figures prior_data/prior_data.pickle: prior samples of $\rho_\phi$ for various runs with prior_data/prior_data_1e6.pickle: prior samples of $\rho_\phi$, $m_\phi$, and $M_{\rm cloud}$ prior_data/prior_data_agnostic.pickle: prior samples of agnostic run, without superradiance prior outdirVac: posterior samples for analsysis with vacuum model outdirAgnostic: posterior samples for agnostic search outdirUnif_td1e5: posterior samples for $\tau_d \sim 10^5 \: \rm{yrs}$ outdirUnif_td1e6: posterior samples for $\tau_d \sim 10^6\: \rm{yrs}$ outdirUnif_td1e7: posterior samples for $\tau_d \sim 10^7\: \rm{yrs}$ outdirUnif_td1e8: posterior samples for $\tau_d \sim 10^8\: \rm{yrs}$