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- W2043988215 abstract "We report on the first observations of variations in UV (intrinsic EUV 330 A) flux of the luminous QSO HS 1700+6416 (z=2.72) over a decade. The amplitude of variations increases from +/-0.1 mag in the optical (R) to up to a factor of 3 at 1250 A. This is apparently an extension of the increase in amplitude of variations towards shorter wavelengths observed with IUE in low z AGN (Paltani & Courvoisier, 1996) to the EUV. The time-scale for variations with the largest amplitudes is >= 1/2 yr to years. We briefly discuss the consequences of the observed variations on the ionizing metagalactic UV background." @default.
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- W2043988215 date "2005-05-30" @default.
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- W2043988215 title "The EUV variability of the luminous QSO HS 1700+6416" @default.
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- W2043988215 doi "https://doi.org/10.1051/0004-6361:20042303" @default.
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