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¹Kyoto University, Department of Physics, Kyoto 606-8502, Japan.

Physical review letters

|August 27, 2025

Resumen

La antena espacial de interferómetro láser (LISA) puede detectar ondas gravitacionales armónicas más altas (GW) de las enanas blancas binarias. Estas señales ofrecen información sobre la asimetría de masa en los sistemas estelares binarios.

Área de la Ciencia:

* Astronomía y astrofísica
* Astronomía de las ondas gravitacionales
* Sistemas binarios compactos

Sus antecedentes:

* Los detectores de ondas gravitacionales basados en el espacio como LISA observarán numerosas enanas blancas galácticas binarias.
* Estos binarios emiten ondas gravitacionales casi monocromáticas.
* La detección de señales de ondas gravitacionales armónicas más altas es un objetivo científico clave.

Objetivo del estudio:

* Para demostrar la probabilidad de detectar señales de ondas gravitacionales armónicas más altas de las enanas blancas binarias cercanas utilizando LISA.
* Para investigar la utilidad de estas señales, en particular el modo (l,
* Para evaluar el impacto de las bajas velocidades orbitales (v/c ~ 10^-3) en la detectabilidad de la señal.

Principales métodos:

* Análisis de las señales de ondas gravitacionales simuladas de las enanas blancas binarias.
* Centrarse en los modos de expansión post-newtonianos, específicamente en el modo (l,
* Consideración de la detectabilidad de la señal con la sensibilidad esperada de LISA.

Principales resultados:

* Es probable que LISA detecte señales de ondas gravitacionales armónicas más altas de un subconjunto de enanas blancas binarias cercanas.
* El modo de detección es particularmente prometedor.
* Las amplitudes de señal de estos modos sirven como indicadores sólidos de la asimetría de masa en sistemas binarios.

Conclusiones:

* Las ondas gravitacionales armónicas más altas de las enanas blancas binarias son detectables con LISA.
* Estas señales proporcionan información valiosa sobre la asimetría de masa, especialmente en los binarios de transferencia de masa.
* Las observaciones coordinadas a largo plazo mejorarán las perspectivas de detección de estas señales informativas de ondas gravitacionales.

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