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Table 5.

Half-light radius r1/2 of the Q2237+0305 quasar accretion disk determined in different works from the analysis of microlensing events.

Authors Spectral range r1/2 (cm)
Kochanek (2004) Johnson-Cousins V filter 3 × 1015
Wayth et al. (2005) C III] and Mg II emission lines ≤6.2 × 1016
Vakulik et al. (2007) Johnson-Cousins V filter 2.34 × 1015
Anguita et al. (2008) SDSS g′ and r′ + Johnson-Cousins V 1.57 × 1015
Morgan et al. (2010) Johnson-Cousins V filter 4.7 × 1015
Poindexter & Kochanek (2010) Johnson-Cousins V filter 1.41 × 1016
Mosquera et al. (2013) Johnson-Cousins V filter 2.57 × 1016
Mosquera et al. (2013) Soft X-rays 5.75 × 1015
Mosquera et al. (2013) Hard X-rays 2.88 × 1015
Mediavilla et al. (2015a) Johnson-Cousins V filter 7.7 × 1015
Mediavilla et al. (2015b) Johnson-Cousins V filter 1.09 × 1016
Munoz et al. (2016) 7 narrow filters + Bessel I, 3510−8130 A 2.2 × 1016
Vives-Arias et al. (2016) Mid-IR (10.36 μm) 8.8 × 1015

Notes. To compare this with the scale length rλ, the relation r1/2 = 2.44 rλ should be used.

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