Palpitations de naines blanches aimantées
Simulation des instabiités à la surface de naines blanches magnétiques
Cette simulation numérique montre la chute de matière à la surface d'une naine blanche fortement magnétique (polar). La matière est canalisée dans une "colonne d'accrétion" de seulement quelques centaines de kilomètres de rayon. Une onde de choc se forme au dessus de la surface de la naine blanche où la température peut atteindre un milliard de degrés. La variation de la hauteur du choc produit des variations très rapides de la luminosité en rayons X. Pour en savoir plus ....
- Voir également la version longue
Oscillations of magnetic white dwarfs
Simulation of instabilities at the surface of magnetic white dwarfs
This computer simulation shows the matter captured from a companion star and falling to the surface of a highly magnetized white dwarf (polar). The matter is channeled in a "accretion column" of only a few hundred kilometers radius. A shock wave is formed above the surface of the white dwarf where the temperature can reach a billion degrees. Strong oscillations of the height of the shock produces very rapid variations of the Xray luminosity. For more information ....
- See also the extended version
- Voir également la version longue
Oscillations of magnetic white dwarfs
Simulation of instabilities at the surface of magnetic white dwarfs
This computer simulation shows the matter captured from a companion star and falling to the surface of a highly magnetized white dwarf (polar). The matter is channeled in a "accretion column" of only a few hundred kilometers radius. A shock wave is formed above the surface of the white dwarf where the temperature can reach a billion degrees. Strong oscillations of the height of the shock produces very rapid variations of the Xray luminosity. For more information ....
- See also the extended version
CEA, 21-06-2015
