Active galactic nuclei on parsec scales
| Autor: | Agudo, Iván, Alberdi, Antxón, Alonso-Herrero, A., Gómez Fernández, J. L., Márquez, Isabel, Masegosa, Josefa, Prieto, Almudena, Ramos-Almeida, Cristina, Ros, Eduardo |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission |
| Rok vydání: | 2015 |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | et al. The nuclei of active galaxies are the most powerful long-lived sources of radiation in the Universe. They often outshine the host galaxy in which they reside and are able to eject outflows or jets of relativistic plasma that emit all the way from radio waves to the highest energetic gamma rays. To understand the mechanisms that govern AGN we have to go down to parsec or sub-parsec scales, where a central engine formed by a supermassive black hole and a surrounding accretion disc produces helical magnetic fields in which jets are thought to originate. The exact role of the magnetic field and its structure, the composition and dynamics of the ejected jets, as well as the feedback effect of the jets on the gas and dust that surrounds the central engine are however still far from understood. The SKA, with its superb sensitivity and polarization capabilities, will allow for a relevant advance on the field of relativistic jets and in active galactic nuclei and their connexion with the fueling material and star formation present in the vicinity of the central supermassive black hole. IA research is supported by a Ramón y Cajal grant of the Spanish MINECO. CRA is supported by a Marie Curie Intra European Fellowship within the 7th European Community Framework Programme (PIEF-GA-2012-327934). MINECO grants AYA2012-38491-C02-01 (AA), AYA2012-13036-C02-01 (AA), AYA2012-31447 (AAH), AYA2013-40825-P (JLG & IA) AYA2013-40979-P (JMM & MP), AYA2013-48226-C3-2-P (JMM & MP), and AYA2012-38491-C02-02 (ER) are acknowledged. |
| Databáze: | OpenAIRE |
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