Broad spectral lines in AGNs and supermassive black hole mass measurements

Abstract: The mass measurement of supermassive black holes (SMBHs) is a very complex task. Between several methods for SMBH mass measurements, some of them use the spectral lines, which indicate the motion of the emitting/absorbing material around an SMBH. Mostly, there is an assumption of virialization of line emitting gas in the region which is close to the central SMBH. In this paper we will give an overview of methods for the SMBH mass measurements using broad emission spectral lines observed in Type 1 AGNs. First we give the basic idea to use the parameters of broad lines to SMBH mass measurements. After that we give an overview of broad lines from X-ray (Fe kα) to the IR (Pashen and Brecket lines) which have been used for SMBH mass estimates. Additionally, we describe and discuss a new method for SMBH mass measurements using the polarization in the broad lines emitted from Type 1 AGNs.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Broad spectral lines in AGNs and supermassive black hole mass measurements ; volume:29 ; number:1 ; year:2020 ; pages:1-14 ; extent:14 ; Open astronomy ; 29, Heft 1 (2020), 1-14 (gesamt 14)

Beteiligte, Orts- und Zeitangaben

• Urheber: Popović, Luka Č.

Weitere Informationen

• DOI: 10.1515/astro-2020-0003
• URN: urn:nbn:de:101:1-2405281622415.327692234037
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 14.08.2025, 10:45 MESZ