منابع مشابه
RFC 6572 RADIUS PMIPv
This document defines new attributes to facilitate Proxy Mobile IPv6 operations using the RADIUS infrastructure. The protocol defined in this document uses RADIUS-based interfaces of the mobile access gateway and the local mobility anchor with the AAA server for authentication, authorization, and policy functions. The RADIUS interactions between the mobile access gateway and the RADIUS-based AA...
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NGC 3783 was observed for approximately 210 ks by Suzaku and in this time showed significant spectral and flux variability at both short (20 ks) and long (100 ks) timescales. The full observation is found to consist of approximately six “spectral periods” where the behavior of the soft (0.3–1.0 keV) and hard (2–10 keV) bands are somewhat distinct. Using a variety of methods we find that the str...
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We present an analysis of the high-frequency X-ray variability of NGC 4051 (MBH ∼ 1.7 × 106 M ) based on a series of XMM–Newton observations taken in 2009 with a total exposure of ∼570 ks (EPIC pn). These data reveal the form of the power spectrum over frequencies from 10−4 Hz, below the previously detected power spectral break, to 10−2 Hz, above the frequency of the innermost stable circular o...
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We have characterized the energy-dependent X-ray variability properties of the Seyfert 1 galaxy NGC 3783 using archival XMM-Newton and Rossi X-ray Timing Explorer data. The high-frequency fluctuation power spectral density function (PSD) slope is consistent with flattening towards higher energies. Light curve cross correlation functions yield no significant lags, but peak coefficients generally...
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We present results of a long-term optical variability campaign on the Seyfert 1 galaxy NGC 7603 over a period of nearly 20 years. The optical continuum and the Balmer and Helium lines varied by a factor of 5 to 10 in this broad-line Seyfert 1 galaxy. Furthermore, it is remarkable that the optical FeII line blends varied with the same amplitude as the Hα and HeI lines. During the first half of t...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1968
ISSN: 0074-1809
DOI: 10.1017/s0074180900020866