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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Resumen
La materia oscura bariónica podría ser restos estelares compactos. Estos restos, incluidas las estrellas de neutrones, podrían formar señales de rayos X observables en halos y cúmulos de galaxias debido a la evolución binaria.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Cosmología Cosmología.
- Física de las partículas Física de las partículas
Sus antecedentes:
- La materia oscura constituye una porción significativa de la masa del universo, sin embargo, su naturaleza sigue siendo difícil de alcanzar.
- La materia bariónica, compuesta de protones y neutrones, es un candidato potencial para la materia oscura, posiblemente en forma de restos estelares compactos.
Objetivo del estudio:
- Para investigar la plausibilidad de que la materia oscura bariónica esté compuesta por restos estelares compactos.
- Explorar los mecanismos de formación y las firmas observables de tales restos en halos y cúmulos galácticos.
Principales métodos:
- Simuló la formación de estrellas y los restos compactos de las masivas nubes de masa de Jeans en el universo temprano.
- Modelado la evolución de los cúmulos de remanentes estelares, incluyendo la interrupción de las mareas y la formación binaria a través de la captura de estrellas de neutrones.
- Predijo las firmas de emisión de rayos X resultantes detectables en la época actual.
Principales resultados:
- Las nubes masivas de Jeans (106-108 masas solares) con una función de masa inicial muy pesada podrían producir eficientemente estrellas de neutrones y estrellas de baja masa de larga vida.
- La interrupción de las mareas de los cúmulos remanentes conduce a la captura de estrellas de neutrones por parte de estrellas no degeneradas, formando binarios cercanos.
- Estos sistemas binarios evolucionan para producir una señal observable de rayos X asociada con las agregaciones de materia oscura.
Conclusiones:
- Los remanentes estelares compactos, particularmente las estrellas de neutrones, son candidatos plausibles a la materia oscura bariónica.
- Las señales de rayos X predichas de las binarias de estrellas de neutrones ofrecen una prueba observacional potencial para este modelo de materia oscura.
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