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metal prints white dwarf metal prints accretion disc metal prints companion metal prints binary star metal prints sun metal prints magnetic metal prints field lines metal prints gas metal prints funnel metal prints emission metal prints emitting metal prints astronomical metal prints astrophysics metal prints exotic metal prints m-class metal prints

photographs white dwarf photos accretion disc photos companion photos binary star photos sun photos magnetic photos field lines photos gas photos funnel photos emission photos emitting photos astronomical photos astrophysics photos exotic photos m-class photos

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Variable stars. Artwork of a magnetic cataclysmic variable (CV) binary system containing an 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.

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