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X-Ray Signatures of Axion Conversion in Magnetic White Dwarf Stars

Safdi, Benjamin R.; Dessert, Christopher; Long, Andrew J.

White dwarf (WD) stars may radiate keV-energy axions produced in their stellar cores. This has been extensively studied as an extra channel by which WDs may cool, with some analyses even suggesting that axions can help explain the observed WD luminosity function. We show that the radiated axions may convert into x rays in the strong magnetic field…