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Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Alineación de discos de acreción magnetizados y chorros relativistas con agujeros negros giratorios
Jonathan C McKinney1, Alexander Tchekhovskoy, Roger D Blandford
1Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94309, USA. jcm@umd.edu
Science (New York, N.Y.)
|November 20, 2012
Resumen
Los discos de acreción magnetizados y los chorros alrededor de los agujeros negros pueden alinearse con el giro del agujero negro a través de un nuevo mecanismo de alineación magneto-espín, incluso con discos gruesos. Esto impacta la evolución de BH y la retroalimentación de la galaxia.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Física del agujero negro Física del agujero negro
- La magnetohidrodinámica es una dinámica magnético-hidrodinámica.
Sus antecedentes:
- Los agujeros negros en acreción (BHs) generan radiación y chorros relativistas, influenciados por el espín BH.
- El efecto Bardeen-Petterson explica la alineación de espín de disco para discos delgados, pero no para discos gruesos en sistemas de chorro.
Objetivo del estudio:
- Investigar cómo los vectores de espín y los espesores de disco afectan a los agujeros negros en acreción.
- Explorar los mecanismos de alineación en los discos y chorros magnetizados.
Principales métodos:
- Utilizó simulaciones de magnetohidrodinámica general relativista (GRMHD) completamente tridimensionales.
- Simulación de agujeros negros en acreción con variados vectores de espín, espesores de disco y flujo magnético saturado.
Principales resultados:
- Descubrió una a.
Conclusiones:
- El mecanismo de alineación magneto-spin concilia la orientación del disco y del chorro con el giro BH, incluso para discos gruesos.
- Este hallazgo tiene implicaciones significativas para la evolución del agujero negro, la retroalimentación de las galaxias y la interpretación de las observaciones de SgrA * y M87.7.
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