Implications of an updated ultraviolet background for the ionization mechanisms of intervening Ne viii absorbers

Abstract Ne viii absorbers seen in QSO spectra are useful tracers of warm ionized gas, when collisional ionization is the dominant ionization process. While photoionization by the ultraviolet background (UVB) is a viable option, it tends to predict large line-of-sight thickness for the absorbing gas...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2017-04, Vol.466 (3), p.3133-3142
Hauptverfasser:	Hussain, Tanvir, Khaire, Vikram, Srianand, Raghunathan, Muzahid, Sowgat, Pathak, Amit
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Astronomy Cooling Density Ionization Ions Line of sight Mathematical models Metallicity Photoionization Spectrum analysis Ultraviolet Ultraviolet radiation
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