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Descubrimiento de rayos gamma de muy alta energía asociados con un binario de rayos X
F Aharonian1, A G Akhperjanian, K-M Aye
1Max-Planck-Institut für Kernphysik, Post Office Box 103980, D-69029 Heidelberg, Germany.
Science (New York, N.Y.)
|July 9, 2005
Resumen
Se detectó una emisión de rayos gamma de alta energía del microquásar LS 5039, lo que sugiere una aceleración de partículas a energías muy altas, similar a los chorros de núcleos galácticos activos.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Astrofísica de altas energías de alta energía.
- La astronomía de rayos gamma es una astronomía de rayos gamma.
Sus antecedentes:
- Las binarias de rayos X consisten en una estrella normal que orbita una estrella de neutrones o un agujero negro.
- Algunos binarios de rayos X, conocidos como microcuásares, exhiben una emisión de radio que se asemeja a los chorros de núcleos galácticos activos.
- Se sabe que los chorros de núcleos galácticos activos aceleran las partículas a altas energías, produciendo rayos gamma.
Objetivo del estudio:
- Para investigar la emisión de rayos gamma de alta energía del microquásar candidato LS 5039.9.
- Para determinar si las partículas en microcuásares pueden ser aceleradas a energías muy altas.
Principales métodos:
- Utilizando el Sistema Estereoscópico de Alta Energía (H.E.S.S.) para las observaciones.
- Análisis de datos para señales de rayos gamma por encima de 100 gigaelectronvoltios.
Principales resultados:
- Pruebas de emisión de rayos gamma detectadas desde LS 5039.
- La emisión observada indica aceleración de partículas a energías muy altas (>100 GeV).
Conclusiones:
- Los microquásares, como LS 5039, pueden acelerar partículas a energías muy altas.
- Este hallazgo apoya la analogía entre los microcuásares y los núcleos galácticos activos.
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