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- W3105615535 abstract "We present the results from simultaneous Chandra and RXTE observations of the X-ray bright broad-line radio galaxy (BLRG) 3C 382. The long (120 ks) exposure with Chandra HETG allows a detailed study of the soft X-ray continuum and of the narrow component of the Fe Kα line. The RXTE PCA data are used to put an upper limit on the broad-line component and constrain the hard X-ray continuum. A strong soft excess below 1 keV is observed in the time-averaged HETG spectrum, which can be parameterized with a steep power law or a thermal model. The flux variability at low energies indicates that the origin of the soft excess cannot be entirely ascribed to the circumnuclear diffuse emission, detected by Chandra on scales of 20''-30'' (22-33 kpc). A narrow (σ < 90 eV) Fe Kα line (with EW< 100 eV) is observed by the Chandra HEG. Similar values for the line parameters are measured by the RXTE PCA, suggesting that the contribution from a broad-line component is negligible. The fact that the exposure is split into two observations taken 3 days apart allows us to investigate the spectral and temporal evolution of the source on different timescales. Significant flux variability associated with spectral changes is observed on timescales of hours and days. The spectral variability is similar to that observed in radio-quiet AGN ruling out a jet-dominated origin of the X-rays." @default.
- W3105615535 created "2020-11-23" @default.
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- W3105615535 date "2007-07-20" @default.
- W3105615535 modified "2023-09-26" @default.
- W3105615535 title "The Nature of a Broad‐Line Radio Galaxy: SimultaneousRXTEandChandraHETG Observations of 3C 382" @default.
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- W3105615535 doi "https://doi.org/10.1086/518927" @default.
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