Revealing the structure of the lensed quasar Q 0957+561 - I. Accretion disk size

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Table 8.

Impact of uncertainties on the size estimates.

Source	r_s (lt-days)	R_1/2 (lt-days)	ΔR_1/2^(a) (lt-days)
I.V. ^(b)			−0.1
Δt			−0.1
Baseline			+0.4
Model			−5.1
α^(c)			+3.4

Notes.

^(a)

Deviation from the inferred disk size of R_1/2 = 17.6 lt-days (see dotted black line in Fig. 6).

^(b)

Intrinsic variability.

^(c)

Mass in stars.

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