Apparent correlation between extrinsic and intrinsic flux variations in the first gravitationally lensed quasar
To better understand which sources contribute to optical passband fluxes of Q0957+561, we present and analyse light curves of the doubly imaged gravitationally lensed quasar from its discovery to 2023. After an early microlensing event, the difference light curves (describing delay-corrected flux ratios between the two quasar images) only show
Goicoechea, L. J. et al.
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2024