Multiwavelength power-spectrum analysis of NGC 5548
نویسندگان
چکیده
منابع مشابه
Observations of Ngc 5548
We present simultaneous observations by EUV E, ASCA, and RXT E of the type 1 Seyfert galaxy NGC 5548. These data indicate that variations in the EUV emission (at D0.2 keV) appear to lead similar modulations in higher energy keV) X-rays by D10È30 ks. This is contrary to popular (Z1 models which attribute the correlated variability of the EUV, UV and optical emission in type 1 Seyferts to reproce...
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اندیشمندان و صاحب نظران علوم اجتماعی بر این باورند که مرحله تازه ای در تاریخ جوامع بشری اغاز شده است. ویژگیهای این جامعه نو را می توان پدیده هایی از جمله اقتصاد اطلاعاتی جهانی ، هندسه متغیر شبکه ای، فرهنگ مجاز واقعی ، توسعه حیرت انگیز فناوری های دیجیتال، خدمات پیوسته و نیز فشردگی زمان و مکان برشمرد. از سوی دیگر قدرت به عنوان موضوع اصلی علم سیاست جایگاه مهمی در روابط انسانی دارد، قدرت و بازتولید...
15 صفحه اولUsing Multiwavelength Observations to Determine the Black Hole Mass and Accretion Rate in the Type 1 Seyfert Galaxy Ngc 5548
We model the spectral energy distribution of the type 1 Seyfert galaxy NGC 5548, fitting data from simultaneous optical, UV, and X-ray monitoring observations. We assume a geometry consisting of a hot central Comptonizing region surrounded by a thin accretion disk. The properties of the disk and the hot central region are determined by the feedback occurring between the hot Comptonizing region ...
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We investigate the variability of physical parameters in the Broad Line Region (BLR) of NGC 5548 using the Boltzmann plot (BP) method. We apply the method on the Balmer lines observed from 1996 to 2004, and find that variability earlier detected in the lines, is also present in the temperature. We find that the average temperature for the considered period was T≈ 10000 K, and that varies from 6...
متن کاملXMM - NEWTON High Resolution Spectroscopy of NGC 5548
We analyze a 137 ks exposure X-ray spectrum of the Seyfert 1 galaxy NGC 5548 obtained with the XMM-Newton Reflection Grating Spectrometer. Due to the long exposure time, the spectrum is of higher statistical quality than the previous observations of this AGN. Therefore, we detect for the first time in NGC 5548 inner-shell transitions from O III to O VI ions, and the Unresolved Transition Array ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2020
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/staa2920