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Características de absorción en el espectro de rayos X de un púlsar de radio ordinario
Oleg Kargaltsev1, Martin Durant, Zdenka Misanovic
1Department of Astronomy, 222 Bryant Space Science Center, University of Florida, Gainesville, FL 32611, USA. kargaltsev@astro.ufl.edu
Science (New York, N.Y.)
|August 28, 2012
Resumen
Los investigadores detectaron características de absorción en el espectro de rayos X de un púlsar típico impulsado por rotación (J1740+1000). Este descubrimiento sugiere que las líneas espectrales pueden ser más comunes en las estrellas de neutrones de lo que se creía anteriormente.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Astrofísica de altas energías de alta energía.
- Física de las estrellas de neutrones Física de las estrellas de neutrones
Sus antecedentes:
- La mayoría de las estrellas de neutrones no acrecentadas son púlsares que emiten radio y / o rayos gamma.
- Sus espectros están típicamente modelados por la emisión continua, sin líneas espectrales.
- Las características espectrales se observaron previamente sólo en unos pocos NSs exóticos, vinculados a propiedades únicas.
Objetivo del estudio:
- Para investigar la presencia de características espectrales en pulsares ordinarios impulsados por rotación.
- Determinar si las líneas espectrales son una característica más común de las estrellas de neutrones de lo que se suponía anteriormente.
Principales métodos:
- Espectroscopia de rayos X del púlsar de radio propulsado por rotación J1740+1000.
- Análisis de datos espectrales para identificar las características de absorción.
Principales resultados:
- Detección de características de absorción significativas en el espectro de rayos X de J1740+1000.
- Este hallazgo desafía la comprensión previa de los espectros de los púlsares.
Conclusiones:
- Las características espectrales no son exclusivas de estrellas de neutrones exóticas y pueden estar presentes en púlsares ordinarios.
- La detección de líneas de absorción en J1740+1000 sugiere que estas características están más extendidas en las poblaciones de estrellas de neutrones.
- Esto cierra la brecha espectral entre los púlsares y otros tipos de estrellas de neutrones.
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