High-energy monitoring of Seyfert galaxies: The case of NGC 4593
نویسندگان
چکیده
منابع مشابه
Energy Dependent Time Lags in the Seyfert 1 Galaxy Ngc 4593
We investigate the energy-time lag dependence of the source NGC 4593 using XMM-Newton/EPIC-pn data. We found that the time lag dependency is linear in nature with respect to the logarithm of different energy bands. We also investigate the frequency dependent time lags and identify that at some frequency range (5 × 10−5 Hz – 2 × 10−4 Hz) the X-ray emission is highly coherent, mildly frequency de...
متن کاملThe complex 0 . 1 – 200 keV spectrum of the Seyfert 1 Galaxy NGC 4593
We report on the first observation of the Seyfert 1 galaxy NGC 4593 in the 0.1–200 keV band, performed with the BeppoSAX observatory. Its spectral components are for the first time simultaneously measured: a power-law with photon spectral index Γ ' 1.9; the Compton-reflection of the primary power-law; a moderately broad (σ > 60 eV) Kα fluorescent line from neutral iron; and an absorption edge, ...
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Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 2 Department of Astronomy, University of Maryland, College Park, MD 20742, USA 3 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA 4 National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA 5 Johns Hopkins University, Department of Physics and Astronomy, Homewood Cam...
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employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2016
ISSN: 0004-6337
DOI: 10.1002/asna.201612346