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El viento giratorio del cuásar PG 1700+518
S Young1, D J Axon, A Robinson
1Department of Physics, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, New York 14623, USA. sxysps@rit.edu
Nature
|November 2, 2007
Resumen
Los astrónomos observaron un cuásar.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Los fenómenos cósmicos son fenómenos cósmicos.
Sus antecedentes:
- Las galaxias a menudo entran en fases activas impulsadas por agujeros negros supermasivos centrales que acumulan gas.
- Los vientos del disco de acreción son cruciales para la transferencia del momento angular, lo que permite la acreción de agujeros negros.
- Estos vientos tienen un impacto significativo en la evolución de las galaxias y en la formación de estructuras.
Objetivo del estudio:
- Proporcionar evidencia observacional del origen de las salidas de los núcleos galácticos activos.
- Para investigar el papel de los vientos del disco de acreción en los fenómenos de núcleos galácticos activos.
Principales métodos:
- Análisis de las estructuras de luz polarizada en la línea de emisión Halpha del cuásar PG 1700+518.8.
- Medición de las velocidades y trayectorias del viento cerca del disco de acreción.
Principales resultados:
- Las estructuras observadas en la luz polarizada confirman un viento de dispersión de electrones que se origina cerca del disco de acreción.
- El viento exhibe altas velocidades de rotación (aproximadamente 4.000 km/s).
- La trayectoria casi vertical del viento desde el disco sugiere mecanismos de lanzamiento específicos.
Conclusiones:
- La evidencia observacional directa apoya las salidas de núcleos galácticos activos originadas en discos de acreción.
- Los hallazgos validan los modelos teóricos de los mecanismos de lanzamiento del viento del disco.
- Este estudio avanza en nuestra comprensión de la evolución de las galaxias y la retroalimentación de los agujeros negros.
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