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Variabilidad infrarroja del objeto BL lacertae OJ287 desde su explosión en 1983
Nature
|March 9, 2018
Resumen
Blazar OJ287 experimentó una explosión óptica e infrarroja en 1983. El monitoreo posterior reveló una correlación entre el flujo infrarrojo y el índice espectral, lo que indica la aceleración de electrones y las pérdidas de radiación.
Área de la Ciencia:
- * Astronomía y astrofísica
- * Astronomía extragaláctica
- * Física de los blazares
Sus antecedentes:
- * Blazar OJ287 exhibió una explosión óptica e infrarroja a principios de 1983.
- * El monitoreo óptico posterior al estallido mostró una tendencia a la baja con fluctuaciones.
- * Se realizó un monitoreo de emisiones en el infrarrojo cercano después del estallido.
Objetivo del estudio:
- * Para investigar el comportamiento de emisión en el infrarrojo cercano del blazar OJ287 después de su estallido en 1983.
- * Para analizar la relación entre el flujo infrarrojo y el índice espectral en el DO 287.
- * Comprender los procesos físicos subyacentes que impulsan los cambios observados en las emisiones.
Principales métodos:
- * Monitoreo continuo de las emisiones de infrarrojo cercano de OJ287.
- * Análisis de las variaciones del índice espectral en conjunción con el flujo infrarrojo.
- * Análisis de la correlación entre el flujo infrarrojo y el índice espectral.
Principales resultados:
- * Los flujos de infrarrojo cercano de OJ287 fluctuaron significativamente, disminuyendo en un orden de magnitud de los niveles de estallido.
- * Se observó una excelente correlación entre el flujo infrarrojo y el índice espectral.
- * El índice espectral se agudiza a medida que disminuye el brillo de la fuente, y viceversa.
Conclusiones:
- * Las variaciones observadas sugieren que los estallidos son impulsados por inyección o reaceleración de electrones.
- * Las pérdidas de radiación hacen que el espectro de energía de los electrones se agudice con el tiempo.
- * Los hallazgos proporcionan información sobre los mecanismos de emisión de los blazars.
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