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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
El estallido de choque de supernova de una supergigante roja
Kevin Schawinski1, Stephen Justham, Christian Wolf
1Department of Physics, University of Oxford, Oxford OX1 3RH, UK. kevins@astro.ox.ac.uk
Resumen
Se observaron estrellas masivas que explotaron como supernovas antes de que su impacto llegara a la superficie. Esta detección temprana de supernovas de colapso de núcleo proporciona información sobre el interior estelar y la física de la explosión.
Área de la Ciencia:
- La astronomía y la astrofísica.
- Evolución Estelar Evolución Estelar
- Física de las Supernovas Física de las Supernovas
Sus antecedentes:
- Las estrellas masivas terminan sus vidas en supernovas de colapso de núcleo.
- Estas explosiones cósmicas son típicamente detectadas días después del evento.
- Comprender los progenitores de las supernovas es crucial para la astrofísica.
Objetivo del estudio:
- Para observar y analizar las primeras etapas de una supernova de colapso de núcleo.
- Para investigar la emisión radiativa precursora antes de que se produzca el choque.
- Para confirmar el tipo progenitor de la supernova observada.
Principales métodos:
- Utilizando el telescopio espacial Galaxy Evolution Explorer (GALEX) para las observaciones.
- El análisis de la curva de luz ultravioleta de la supernova SNLS-04D2dc.c.
- El empleo de modelos teóricos para interpretar los datos de observación.
Principales resultados:
- Detectó un precursor radiativo del choque de la supernova antes de la ruptura de la superficie.
- Observaron la expansión inicial de la estrella progenitora durante la explosión.
- Confirmó que la estrella progenitora era una supergigante roja a través del modelado teórico.
Conclusiones:
- La detección temprana de las supernovas es posible mediante la observación de precursores radiativos.
- Este método permite sondear la física de las supernovas de colapso de núcleo.
- Proporciona información sobre la estructura interna de los progenitores de las supergigantes rojas.
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