Optical polarisation of stellar-fed active and quiescent supermassive black holes

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Table A.4.

MOSFiT results for the TDEs analysed in this work (and AT2020mot).

Name	log R_ph, 0	log T_ν	b	log(M_BH/M_⊙)	log ϵ	l_ph	log N_H	M_★/M_⊙	t_peak
AT2019aalc (flare 1)	$0 . 71_{- 0.26}^{+ 0.29}$ $0.71^{+0.29}_{-0.26}$	$1 . 89_{- 0.10}^{+ 0.07}$ $1.89^{+0.07}_{-0.10}$	$1 . 00_{- 0.21}^{+ 0.20}$ $1.00^{+0.20}_{-0.21}$	$6 . 86_{- 0.26}^{+ 0.21}$ $6.86^{+0.21}_{-0.26}$	$- 2 . 41_{- 0.31}^{+ 0.46}$ $-2.41^{+0.46}_{-0.31}$	$0 . 14_{- 0.10}^{+ 0.13}$ $0.14^{+0.13}_{-0.10}$	$19_{- 2}^{+ 2}$ $19^{+2}_{-2}$	$0 . 24_{- 0.16}^{+ 0.19}$ $0.24^{+0.19}_{-0.16}$	$113_{- 5}^{+ 5}$ $113^{+5}_{-5}$
AT2019aalc (flare 2)	$1 . 16_{- 0.36}^{+ 0.31}$ $1.16^{+0.31}_{-0.36}$	$1 . 78_{- 0.47}^{+ 0.13}$ $1.78^{+0.13}_{-0.47}$	$1 . 21_{- 0.58}^{+ 0.48}$ $1.21^{+0.48}_{-0.58}$	$6 . 22_{- 0.55}^{+ 0.52}$ $6.22^{+0.52}_{-0.55}$	$- 1 . 64_{- 0.82}^{+ 0.50}$ $-1.64^{+0.50}_{-0.82}$	$0 . 45_{- 0.21}^{+ 0.23}$ $0.45^{+0.23}_{-0.21}$	$19_{- 2}^{+ 2}$ $19^{+2}_{-2}$	$0 . 08_{- 0.05}^{+ 0.41}$ $0.08^{+0.41}_{-0.05}$	$99_{- 8}^{+ 8}$ $99^{+8}_{-8}$
AT2020afhd (flare 2)	$0 . 52_{- 0.28}^{+ 0.28}$ $0.52^{+0.28}_{-0.28}$	$- 0 . 19_{- 2.05}^{+ 1.10}$ $-0.19^{+1.10}_{-2.05}$	$1 . 02_{- 0.14}^{+ 0.19}$ $1.02^{+0.19}_{-0.14}$	$6 . 66_{- 0.43}^{+ 0.20}$ $6.66^{+0.20}_{-0.43}$	$- 2 . 55_{- 0.51}^{+ 0.52}$ $-2.55^{+0.52}_{-0.51}$	$0 . 27_{- 0.12}^{+ 0.13}$ $0.27^{+0.13}_{-0.12}$	$19_{- 2}^{+ 2}$ $19^{+2}_{-2}$	$0 . 15_{- 0.11}^{+ 0.32}$ $0.15^{+0.32}_{-0.11}$	$49_{- 2}^{+ 2}$ $49^{+2}_{-2}$
AT2024pvu	$2 . 31_{- 0.57}^{+ 0.49}$ $2.31^{+0.49}_{-0.57}$	$0 . 17_{- 2.08}^{+ 0.71}$ $0.17^{+0.71}_{-2.08}$	$0 . 86_{- 0.08}^{+ 0.12}$ $0.86^{+0.12}_{-0.08}$	$7 . 20_{- 0.14}^{+ 0.12}$ $7.20^{+0.12}_{-0.14}$	$- 2 . 91_{- 0.33}^{+ 0.37}$ $-2.91^{+0.37}_{-0.33}$	$1 . 93_{- 0.10}^{+ 0.05}$ $1.93^{+0.05}_{-0.10}$	$20_{- 3}^{+ 1}$ $20^{+1}_{-3}$	$1 . 88_{- 0.79}^{+ 2.12}$ $1.88^{+2.12}_{-0.79}$	$81_{- 2}^{+ 7}$ $81^{+7}_{-2}$
AT2024wsd	$0 . 54_{- 0.16}^{+ 0.19}$ $0.54^{+0.19}_{-0.16}$	$- 0 . 38_{- 1.74}^{+ 1.17}$ $-0.38^{+1.17}_{-1.74}$	$0 . 91_{- 0.26}^{+ 0.34}$ $0.91^{+0.34}_{-0.26}$	$6 . 39_{- 0.33}^{+ 0.13}$ $6.39^{+0.13}_{-0.33}$	$- 2 . 57_{- 0.47}^{+ 0.50}$ $-2.57^{+0.50}_{-0.47}$	$0 . 65_{- 0.12}^{+ 0.14}$ $0.65^{+0.14}_{-0.12}$	$19_{- 2}^{+ 1}$ $19^{+1}_{-2}$	$0 . 32_{- 0.17}^{+ 0.33}$ $0.32^{+0.33}_{-0.17}$	$32_{- 3}^{+ 2}$ $32^{+2}_{-3}$
AT2024bgz	$0 . 82_{- 0.09}^{+ 0.08}$ $0.82^{+0.08}_{-0.09}$	$- 0 . 28_{- 1.31}^{+ 0.79}$ $-0.28^{+0.79}_{-1.31}$	$1 . 03_{- 0.07}^{+ 0.05}$ $1.03^{+0.05}_{-0.07}$	$6 . 55_{- 0.18}^{+ 0.10}$ $6.55^{+0.10}_{-0.18}$	$- 2 . 52_{- 0.27}^{+ 0.43}$ $-2.52^{+0.43}_{-0.27}$	$0 . 43_{- 0.05}^{+ 0.06}$ $0.43^{+0.06}_{-0.05}$	$18_{- 2}^{+ 2}$ $18^{+2}_{-2}$	$0 . 19_{- 0.12}^{+ 0.15}$ $0.19^{+0.15}_{-0.12}$	$39_{- 3}^{+ 3}$ $39^{+3}_{-3}$
AT2020mot	$0 . 60_{- 0.15}^{+ 0.16}$ $0.60^{+0.16}_{-0.15}$	$- 0 . 29_{- 1.66}^{+ 1.27}$ $-0.29^{+1.27}_{-1.66}$	$0 . 76_{- 0.10}^{+ 0.10}$ $0.76^{+0.10}_{-0.10}$	$7 . 12_{- 0.05}^{+ 0.08}$ $7.12^{+0.08}_{-0.05}$	$- 3 . 21_{- 0.10}^{+ 0.09}$ $-3.21^{+0.09}_{-0.10}$	$0 . 44_{- 0.08}^{+ 0.09}$ $0.44^{+0.09}_{-0.08}$	$18_{- 1}^{+ 2}$ $18^{+2}_{-1}$	$1 . 49_{- 0.20}^{+ 0.35}$ $1.49^{+0.35}_{-0.20}$	$89_{- 5}^{+ 3}$ $89^{+3}_{-5}$

Notes. Using ZTF data, each fit used at least 200 walkers and required more than 3 × 10⁴ iterations to achieve a potential scale reduction factor, (PSRF) ≤1.3, except for AT2024wsd, which converged with PSRF = 1.35. The model parameters show the 1σ percentile ranges derived from the marginalised posteriors. The physical parameters include the normalisation of the photospheric radius (R_ph, 0), the viscous timescale (T_ν), the mass of the SMBH (M_BH), the scaled impact parameter (b), the radiative efficiency from mass fallback accretion (ϵ), the photospheric scaling coefficient (l_ph), the hydrogen column density of the host galaxy (N_H), the mass of the star (M_★), and the rest-frame rise time to peak bolometric luminosity in days (t_peak).

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