PTArcade model files used in the paper "The NANOGrav 15 yr Data Set: Search for Signals from New Physics". The tabulated data used to define some of the signals is provided in the 'models_data' folder. Refer to the PTArcade documentation page for details on how PTArcade model files are defined and used. The naming convention for the files is the following: igw: inflationary Gravitational Waves (GWs) sigw: scalar-induced GWs sigw_box: assumes a box-like feature in the primordial power spectrum. sigw_delta: assumes a delta-like feature in the primordial power spectrum. sigw_gauss: assumes a gaussian peak feature in the primordial power spectrum. pt: cosmological phase transitions pt_bubble: assumes that the dominant contribution to the GW productions comes from bubble collisions. pt_sound: assumes that the dominant contribution to the GW productions comes from sound waves. stable: stable cosmic strings stable-c: stable strings emitting GWs only in the form of GW bursts from cusps on closed loops. stable-k: stable strings emitting GWs only in the form of GW bursts from kinks on closed loops. stable-m: stable strings emitting monochromatic GW at the fundamental frequency. stable-n: stable strings described by numerical simulations including GWs from cusps and kinks. meta: metastable cosmic strings meta-l: metastable strings with GW emission from loops only. meta-ls metastable strings with GW emission from loops and segments. super: cosmic superstrings. dw: domain walls dw-sm: domain walls decaying into Standard Model particles. dw-dr: domain walls decaying into dark radiation. uldm_e: ULDM Earth signal. uldm_c: ULDM combined Earth + pulsar signal for direct coupling uldm_c_cor: correlated limit uldm_c_unc: uncorrelated limit uldm_vecB: vector ULDM coupled to the baryon number uldm_vecB_cor: correlated limit uldm_vecB_unc: uncorrelated limit uldm_vecBL: vector ULDM coupled to B-L uldm_vecBL_cor: correlated limit uldm_vecBL_unc: uncorrelated limit uldm_p: ULDM pulsar signal uldm_p_cor: ULDM pulsar signal in the correlated limit. uldm_p_unc: ULDM pulsar signal in the uncorrelated limit. uldm_c_grav: ULDM combined Earth + pulsar signal for gravitational only coupling uldm_c_grav_cor: correlated limit uldm_c_cor_grav_low: low mass region uldm_c_cor_grav_mon: monopole region uldm_c_cor_grav_high: high mass region uldm_c_unc: uncorrelated limit uldm_c_unc_grav_low: low mass region uldm_c_unc_grav_mon: monopole region uldm_c_unc_grav_high: high mass region pbh_dynamic: substructure signal in the dynamic limit. pbh_static: substructure signal in the static limit.

Fixed typo in the normalization of the phase transition spectra.