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Detección de la emisión de rayos gamma de la nebulosa de viento del púlsar Vela con AGILE
A Pellizzoni1, A Trois, M Tavani
1INAF-Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy. apellizz@ca.astro.it
Science (New York, N.Y.)
|January 2, 2010
Resumen
Hemos detectado la nebulosa del viento del púlsar Vela en la banda de rayos gamma GeV utilizando el satélite AGILE. Este hallazgo ayuda a comprender las nebulosas de viento púlsar e identificar fuentes galácticas de rayos gamma.
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 nebulosas de viento de púlsares (PWNe) son energizadas por partículas relativistas de púlsares, que emiten a través del espectro electromagnético.
- Las observaciones anteriores carecían de datos de rayos gamma, lo que dificultaba una comprensión completa de la fenomenología y los mecanismos de emisión de PWNe.
- Existen observaciones de TeV, pero los datos de rayos gamma GeV son cruciales para una imagen completa de múltiples longitudes de onda.
Objetivo del estudio:
- Para detectar la nebulosa del viento del púlsar Vela en la banda de rayos gamma GeV.
- Para restringir las poblaciones de partículas responsables de la emisión de GeV en PWNe.
- Para establecer PWNe como una clase de emisores de rayos gamma que contribuyen a las fuentes galácticas de rayos gamma.
Principales métodos:
- Se utilizaron datos del satélite AGILE.
- Las emisiones de rayos gamma analizadas en el rango de energía de 100 MeV a 3 GeV.
- Enfocado en la nebulosa del viento del púlsar Vela.
Principales resultados:
- Se ha detectado con éxito la nebulosa de viento del púlsar Vela en la banda de rayos gamma GeV.
- Restringido las propiedades de la población de partículas responsables de la emisión de GeV observada.
- Se demostró que el PWNe puede ser un emisor significativo de rayos gamma.
Conclusiones:
- La detección de Vela PWN en rayos gamma GeV proporciona una evidencia observacional crucial.
- Este hallazgo ayuda a comprender los procesos de aceleración y emisión de partículas dentro de PWNe.
- Las nebulosas de viento pulsar se identifican como una clase de fuente potencial para una fracción de fuentes galácticas no identificadas de rayos gamma.
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