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- W98194628 abstract "Short time scale X-ray power spectra of AGN are in general well fitted by a power law with slopes between −1 and −2 but we expect these slopes to flatten at low frequencies (indication of such a flattening has already been seen in NGC 5506). We have searched for such a low-frequency break in the power spectrum of NGC 4151 by investigating its long term X-ray light curve (2–10 keV). To construct this light curve we used Ariel V SSI, OSO-8, HEAO-1, Ariel VI, EXOSAT ME and GINGA LAC data." @default.
- W98194628 created "2016-06-24" @default.
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- W98194628 date "1994-01-01" @default.
- W98194628 modified "2023-09-27" @default.
- W98194628 title "Long Term X-ray Variability of NGC 4151" @default.
- W98194628 cites W2033220168 @default.
- W98194628 doi "https://doi.org/10.1017/s0074180900175916" @default.
- W98194628 hasPublicationYear "1994" @default.
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