Precessing winds from the nucleus of the prototype Red Geyser?

• Autor(a) principal: Riffel, Rogemar André
• Data de Publicação: 2019
• Outros Autores: Nemmen, Rodrigo S., Ilha, Gabriele da Silva, Rembold, Sandro Barboza, Roy, Namrata, Storchi-Bergmann, Thaisa, Riffel, Rogério, Bundy, Kevin, Machado, Alice Deconto, Mallmann, Nícolas Dullius, Schimoia, Jáderson da Silva, Costa, Luiz N. da, Maia, Marcio Antonio Geimba
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/198440
• topic: Galáxias ativas; Meio interestelar; Nucleo galatico; Formacao de estrelas; Galaxies: active; Galaxies: ISM; Galaxies nuclei; Galaxies: star formation

Supermassive black holes (SMBHs) are present at the centre of most galaxies, with the related mass accretion processes giving origin to outflows in active galactic nuclei (AGNs). It has been presumed that only intense winds from luminous AGNs were able to suppress star formation until the discovery of a new class of galaxies with no recent star formation and with the nucleus in a quiescent state showing kpc scale outflows. We used SDSS MaNGA and Gemini Integral Field Spectroscopy of the prototype Red Geyser Akira and found that the orientation of the outflow changes by about 50° from its nucleus to kpc scales. A possible interpretation is that the outflow is produced by a precessing accretion disc due to a misalignment between the orientation of the disc and the spin of the SMBH. The precession of the central source is also supported by a similar change in the orientation of the ionization pattern. Although similar behaviour has commonly being reported for collimated relativistic jets, the precession of an AGN wide wind is reported here for the first time, implying on a larger work surface of the wind, which in turn increases the star formation suppression efficiency of the outflow.