ASUZAKUOBSERVATION OF NGC 4593: ILLUMINATING THE TRUNCATED DISK
نویسندگان
چکیده
منابع مشابه
Balmer emission - line profile variations in NGC 4593
We present results of a variability campaign of Balmer line profiles inNGC 4593. The continuumand the broad emission line intensities varied up to 50 per cent during the observing period. The rms profiles of the Balmer lines as well as the difference line profiles can be described by a limited number of strong components only: a central component and two to four outer components which are locat...
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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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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...
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Many ellipticals contain nuclear disks of dust and gas. Some ellipticals contain nuclear disks of stars that are distinct from the rest of the galaxy. We show that the dwarf E2 galaxy NGC 4486A contains both – it is a “Rosetta stone" object that tells us how nuclear disks evolve. Its properties suggest that, as accreted gas dissipates and settles toward the center, it forms stars and builds a s...
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We present a Very Long Baseline Interferometry image of the water maser emission in the nuclear region of NGC 3393. The maser emission has a linear distribution oriented at a position angle of ~–34°, perpendicular to both the kiloparsec-scale radio jet and the axis of the narrow-line region. The position-velocity diagram displays a red-blue asymmetry about the systemic velocity and the estimate...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2009
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/705/1/496