Keyphrases
Quasars
100%
Observational Evidence
100%
Gasses
100%
Active Galactic nuclei
66%
High Density
33%
Low Density
33%
Observational Constraints
33%
Dust
33%
At a Distance
33%
Small Fraction
33%
Line-of-sight
33%
Velocity Structure
33%
Absorption Feature
33%
Gas Model
33%
Gas Component
33%
Gas Absorption
33%
Continuum Source
33%
Ionization Parameters
33%
Spectral Absorption Features
33%
Physics
Active Galactic Nuclei
100%
Quasar
100%
Vapor Phase
50%
Parsec
50%
Absorption Spectra
50%
Line of Sight
50%
Earth and Planetary Sciences
Quasar
100%
Active Galactic Nuclei
100%
Velocity Structure
50%
Line of Sight
50%
Vapor Phase
50%