Articles with "broad line" as a keyword



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A Suzaku sample of unabsorbed narrow-line and broad-line Seyfert 1 galaxies – I. X-ray spectral properties

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2783

Abstract: A sample of narrow-line (NLS1) and broad-line Seyfert 1 (BLS1) galaxies observed with Suzaku is presented. The final sample consists of 22 NLS1s and 47 BLS1s, for a total of 69 AGN that are all… read more here.

Keywords: soft hard; line; hard excesses; line seyfert ... See more keywords
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Testing broad-line region models with reverberation mapping

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa767

Abstract: New reverberation mapping (RM) measurements, combined with accurate luminosities and line ratios, provide strong constraints on the location of the line emitting gas in the broad line region (BLR) of active galactic nuclei (AGN). In… read more here.

Keywords: line region; broad line; reverberation mapping; line ... See more keywords
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The variability of the broad-line Balmer decrement for quasars from the Sloan Digital Sky Survey Reverberation Mapping

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1377

Abstract: Based on the spectral decomposition through a code of PrepSpec, the light curves (spanning 6.5 years in the observed frame) of the broad-line Balmer decrement, i.e., the flux ratio of the broad Hα to the broad… read more here.

Keywords: decrement; broad line; balmer decrement; line balmer ... See more keywords
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Gamma-ray opacity of the anisotropic stratified broad-line regions in blazars

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Published in 2017 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stw2326

Abstract: The GeV-range spectra of blazars are shaped not only by non-thermal emission processes internal to the relativistic jet but also by external pair-production absorption on the thermal emission of th ... read more here.

Keywords: gamma ray; opacity anisotropic; anisotropic stratified; ray opacity ... See more keywords
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Polarization of broad line emission from AGNs with determined virial factors

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Published in 2017 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stx568

Abstract: We calculated the polarization degree of hydrogen Balmer broad emission lines from a number of active galactic nuclei (AGNs) with determined virial factors. The objects were selected from the sample presented by Decarli et al.(2008).… read more here.

Keywords: agns determined; emission; polarization degree; virial factors ... See more keywords
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Spectropolarimetry of Seyfert 1 galaxies with equatorial scattering: black hole masses and broad-line region characteristics

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/sty2995

Abstract: Here we present the spectropolarimetric observations of a sample of 30 Type 1 AGNs and an analysis of the observed polarization in these AGNs. The observations have been performed with the 6-meter telescope of SAO… read more here.

Keywords: line; black hole; equatorial scattering; polarization ... See more keywords