Figure 7 from Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light Curves

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Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light Curves

Authors: Yan-Fei Jiang (姜燕飞), Paul J. Green, Jenny E. Greene, Eric Morganson, Yue Shen, Anna Pancoast, Chelsea L. MacLeod, Scott F. Anderson, W. N. Brandt, C. J. Grier, H.-W. Rix, John J. Ruan, Pavlos Protopapas, Caroline Scott, W. S. Burgett, K. W. Hodapp, M. E. Huber, N. Kaiser, R. P. Kudritzki, E. A. Magnier, N. Metcalfe, J. T. Tonry, R. J. Wainscoat, and C. Waters

2017 The Astrophysical Journal 836 186.

Provider: AAS Journals

Caption: Figure 7.

Top: interpolated cross-correlation coefficient (ICCF) between the mock g- and r-, i-, z-band light-curves. The solid lines use all the data points, while the dashed and dotted lines are based on the first or second half of the data, to show the variations in the ICCF. Bottom: probability density distributions of lags calculated based on the centroid of ICCF as described in Section 3.3. This experiment is done for quasar J022020.02–034331.1 as in the bottom panel of Figure 6. From left to right, the mock r-, i-, and z-band light curves are shifted by 2, 5, and 11 days as indicated by the vertical dashed line.

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