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Un púlsar masivo en un binario relativista compacto
John Antoniadis1, Paulo C C Freire, Norbert Wex
1Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, Bonn, Germany. jantoniadis@mpifr-bonn.mpg.de
Science (New York, N.Y.)
|April 27, 2013
Resumen
Se midió un púlsar masivo de 2,01 masas solares que orbita una enana blanca. Su desintegración orbital coincide con la relatividad general, validando la teoría de Einstein en condiciones de gravedad extrema.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Relatividad general La relatividad general.
- Las ondas gravitacionales son ondas gravitacionales.
Sus antecedentes:
- Las extensiones de la relatividad general predicen desviaciones del espacio-tiempo alrededor de estrellas de neutrones masivas.
- Probar la gravedad de campo fuerte requiere mediciones precisas en entornos extremos.
Objetivo del estudio:
- Para medir la masa de un púlsar en un sistema binario compacto.
- Para probar la validez de la relatividad general en un régimen de campo fuerte.
- Para restringir las desviaciones de la relatividad general y las propiedades de la materia densa.
Principales métodos:
- Astronomía observacional utilizando el tiempo de pulsar.
- Análisis del decaimiento orbital en un sistema binario compuesto por un púlsar y una enana blanca.
Principales resultados:
- Se determinó una masa de púlsar de 2,01 ± 0,04 masas solares.
- El decaimiento orbital observado es consistente con las predicciones de la relatividad general.
- Se establecieron restricciones a las desviaciones de la relatividad general.
Conclusiones:
- La relatividad general sigue siendo válida bajo condiciones gravitatorias extremas.
- Las plantillas basadas en GR son adecuadas para detectores de ondas gravitacionales.
- El estudio proporciona información sobre la materia densa, la astrofísica estelar binaria y el reciclaje de los púlsares.
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