Dichotomy of radio loud and radio quiet quasars in four dimensional eigenvector one (4DE1) parameter space. Issue Volume 15:Issue S356(2019) (October 2019)

• Record Type: Journal Article
• Authors: Terefe, Shimeles; del Olmo, Ascensión; Marziani, Paola; Pović, Mirjana
• Editors: Pović, Mirjana; Marziani, Paola; Masegosa, Josefa; Netzer, Hagai; Negu, Seblu H.; Tessema, Solomon B.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S356(2019)
• Page Start: 351
• Page End: 354
• Publication Date: 2019-10
• Subjects: Active galaxies, -- quasars, -- radio loud and radio quiet quasars, -- four dimensional eigenvecter 1 parameter space; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921320003324
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Recent work has shown that it is possible to systematize quasars (QSOs) spectral diversity in 4DE1 parameter space. The spectra contained in most of the surveys have low signal to noise ratio which fed the impression that all QSO’s are spectroscopically similar. Exploration of 4DE1 parameter space gave rise to the concept of two populations of QSOs that present important spectroscopic differences. We aim to quantify broad emission line differences between radio quiet and radio loud sources by exploiting more complete samples of QSO with spectral coverage in H β, MgII and CIV emission lines. We used a high redshift sample (0.35 < z < 1) of strong radio emitter QSOs observations from Calar Alto Observatory in Spain.