Showing papers by "Chris Benn published in 2015"
TL;DR: In this paper, the location and energy properties of a SIV BALQSO outflow were measured from collisional excitation models of the observed SIV/$SIV* absorption troughs.
Abstract: We measure the location and energetics of a SIV BALQSO outflow. This ouflow has a velocity of 10,800 km s$^{-1}$ and a kinetic luminosity of $10^{45.7}$ erg s$^{-1}$, which is 5.2% of the Eddington luminosity of the quasar. From collisional excitation models of the observed SIV$/$SIV* absorption troughs, we measure a hydrogen number density of $n_\mathrm{\scriptscriptstyle H}=10^{4.3}$ cm$^{-3}$, which allows us to determine that the outflow is located 110 pc from the quasar. Since SIV is formed in the same ionization phase as CIV, our results can be generalized to the ubiquitous CIV BALs. Our accumulated distance measurements suggest that observed BAL outflows are located much farther away from the central source than is generally assumed (0.01-0.1 pc).
69 citations
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TL;DR: In this paper, the location and energy properties of a SIV/SIV* outflow from the quasar were measured using collisional excitation models of the observed SIV/$SIV * absorption troughs.
Abstract: We measure the location and energetics of a SIV BALQSO outflow This ouflow has a velocity of 10,800 km s$^{-1}$ and a kinetic luminosity of $10^{457}$ erg s$^{-1}$, which is 52% of the Eddington luminosity of the quasar From collisional excitation models of the observed SIV$/$SIV* absorption troughs, we measure a hydrogen number density of $n_\mathrm{\scriptscriptstyle H}=10^{43}$ cm$^{-3}$, which allows us to determine that the outflow is located 110 pc from the quasar Since SIV is formed in the same ionization phase as CIV, our results can be generalized to the ubiquitous CIV BALs Our accumulated distance measurements suggest that observed BAL outflows are located much farther away from the central source than is generally assumed (001-01 pc)
38 citations
TL;DR: In this article, the Spanish Ministerio de Ciencia e Innovación (MICINN) under project AYA2011-29517-C03-02 was used to fund the study.
Abstract: This work has been funded by the Spanish Ministerio de Ciencia e Innovacion (MICINN) under project AYA2011-29517-C03-02.
16 citations