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Optical and Near-IR long-term monitoring of NGC3783 and MR2251-178: evidence for variable near-IR emission from thin accretion discs
Seyfert galaxies:general — Seyfert galaxies:individual(NGC 3783,MR 2251-178)
2011/9/26
We present long term near-IR light curves for two nearby AGN: NGC3783 and MR2251-178. The near-IR data are complemented with optical photometry obtained over the same period of time. The light curves ...
Utilization of GPS Satellites for Precise Irradiation Measurement and Monitoring
Albedo global positioning system solar irradiation
2009/5/6
Precise measurement of irradiance over the earth under various
circumstances like solar flares, coronal mass ejections, over an 11-year
solar cycle, etc. leads to better understanding of Sun–earth r...