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Un agujero negro masivo en acreción activa en la galaxia enana de estallido estelar Henize 2-10
Amy E Reines1, Gregory R Sivakoff, Kelsey E Johnson
1Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, Virginia 22904, USA. areines@virginia.edu
Nature
|January 11, 2011
Resumen
Los científicos encontraron un agujero negro en acreción activa en la galaxia enana Henize 2-10. Este descubrimiento sugiere que el crecimiento masivo de agujeros negros puede ocurrir incluso antes de que se formen grandes estructuras de galaxias, ofreciendo pistas sobre la evolución de los agujeros negros en el universo temprano.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Evolución de la galaxia Evolución de la galaxia.
- Formación de agujero negro.
Sus antecedentes:
- Los agujeros negros supermasivos residen en la mayoría de las galaxias gigantes.
- La formación y evolución de los agujeros negros del universo primitivo sigue siendo poco comprendida.
- Las galaxias enanas ofrecen información sobre las primeras galaxias y el ensamblaje de agujeros negros.
Objetivo del estudio:
- Para investigar la presencia y actividad de agujeros negros en galaxias enanas cercanas.
- Comprender la relación entre el crecimiento del agujero negro y la formación de galaxias.
- Para explorar las primeras etapas de la evolución del agujero negro en el universo.
Principales métodos:
- Observaciones de radio para detectar fuentes centrales compactas.
- Observaciones de rayos X duros para identificar agujeros negros en acrecentamiento.
- Estimación de la masa del agujero negro central.
Principales resultados:
- Se identificó una fuente de radio compacta en el centro de Henize 2-10.
- Esta fuente de radio coincide con una fuente de rayos X dura.
- Henize 2-10 alberga un agujero negro en acreción activa de aproximadamente un millón de masas solares.
- La galaxia exhibe una intensa formación estelar junto con su agujero negro masivo.
Conclusiones:
- Las galaxias enanas cercanas que forman estrellas pueden albergar agujeros negros masivos.
- El crecimiento del agujero negro puede preceder a la formación de esferoides galácticos.
- Henize 2-10 sirve como un análogo para las galaxias del universo temprano durante el agujero negro y el ensamblaje de masas.
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