Circum-Galactic Medium in the Halo of Quasars

Circum-Galactic Medium in the Halo of Quasars

The properties of circum-galactic gas in the halo of quasar host galaxies are investigated analyzing Mg II 2800 and C IV 1540 absorption-line systems along the line of sight close to quasars. We used optical spectroscopy of closely aligned pairs of quasars (projected distance ≤ 200 kpc, but at very...

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Bibliographic Details
Main Authors: Riccardo Ottolina, Renato Falomo, Aldo Treves, Michela Uslenghi, Jari K. Kotilainen, Riccardo Scarpa, Emanuele Paolo Farina
Format: Article
Language:English
Published: Frontiers Media S.A. 2017-12-01
Series:Frontiers in Astronomy and Space Sciences
Subjects:
quasar
quasar environment
quasar pair
quasar spectra
galaxy around quasar
Online Access:http://journal.frontiersin.org/article/10.3389/fspas.2017.00061/full

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