Yoshii, Yuzuru; Kobayashi, Yukiyasu; Minezaki, Takeo; Koshida, Shintaro; Peterson, Bruce
We have pioneered a new method for the measurement of extragalactic distances. This method uses the time lag between variations in the short wavelength and long wavelength light from an active galactic nucleus (AGN), based on a quantitative physical model of dust reverberation that relates the time lag to the absolute luminosity of the AGN. We use the large homogeneous data set from intensive monitoring observations in optical and near-infrared wavelength bands with the dedicated 2 m MAGNUM...[Show more]
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