Variable stars

Variable stars

R670/0138

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Caption

Variable stars. Artwork of a magnetic cataclysmic variable (CV) binary system containing an M- class dwarf star (upper right) and a dense, strongly magnetic white dwarf star (lower left). Gas from the M-class star is drawn towards the white dwarf. Because the gas is charged, as it approaches the white dwarf it follows the star's magnetic field lines (blue) and plunges into the magnetic pole. This causes intermittent, powerful X-ray emissions. Because material enters the pole directly without forming a spiral accretion disc, this is classed as a polar CV system.

Release details

Model release not required. Property release not required.

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