Diagnostics of the physical properties in the Broad Line Region (BLR) of Active Galactic Nuclei (AGN) is a difficult subject to study since there is no simple and direct method as is a case for the Narrow Line Region. We propose here a direct method for the temperature estimates in the BLR, that is using the broad Balmer and helium lines (He II lambda4686 and He I lambda5876).
Temperature diagnostics of the Broad Line Region in Active Galactic Nuclei
CIROI, STEFANO;RAFANELLI, PIERO
2008
Abstract
Diagnostics of the physical properties in the Broad Line Region (BLR) of Active Galactic Nuclei (AGN) is a difficult subject to study since there is no simple and direct method as is a case for the Narrow Line Region. We propose here a direct method for the temperature estimates in the BLR, that is using the broad Balmer and helium lines (He II lambda4686 and He I lambda5876).
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