Video Experimental Relacionado
Updated: Jul 25, 2026

08:32
External Excitation of Neurons Using Electric and Magnetic Fields in One- and Two-dimensional Cultures
Published on: May 7, 2017
Un púlsar periódicamente activo que da una idea de la física de la magnetosfera
M Kramer1, A G Lyne, J T O'Brien
1Jodrell Bank Observatory, University of Manchester, Macclesfield, SK11 9DL, UK.
Resumen
PSR B1931+24, un pulsar de radio, exhibe ciclos únicos de encendido y apagado. Su velocidad de giro hacia abajo aumenta significativamente cuando está activo, revelando información sobre el viento púlsar y las corrientes magnetosféricas.
Área de la Ciencia:
- La astronomía es la astronomía.
- La astrofísica es la astrofísica.
- Física de los púlsares La física de los púlsares.
Sus antecedentes:
- PSR B1931+24 (J1933+2421) es un pulsar de radio aislado.
- Los púlsares son conocidos por sus propiedades de rotación y características de emisión.
Objetivo del estudio:
- Para investigar el inusual comportamiento de encendido y apagado de PSR B1931+24.
- Para entender el papel del viento del púlsar en el giro hacia abajo del púlsar.
- Para estimar las corrientes magnetosféricas en un púlsar.
Principales métodos:
- Astronomía observacional centrada en la emisión de radio y la rotación de los púlsares.
- Análisis de las tasas de spin-down del púlsar durante las fases activa e inactiva.
Principales resultados:
- PSR B1931+24 muestra estados de encendido/apagado casi periódicos, con la emisión de radio apagándose en segundos y permaneciendo indetectable durante semanas.
- La rotación del púlsar se ralentiza un 50% más rápido durante las fases de emisión de radio activa.
- Se observa un aumento significativo en las corrientes magnetosféricas cuando el púlsar se enciende.
Conclusiones:
- El viento púlsar juega un papel sustancial en el spin-down de PSR B1931+24.
- Este estudio proporciona la primera estimación de las corrientes magnetosféricas durante la emisión de radio en un púlsar.
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