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Axion Emission Can Explain a New Hard -ray Excess from Nearby Isolated Neutron Stars
Malte Buschmann, Raymond T. Co, Christopher Dessert +1
Axions may be produced thermally inside the cores of neutron stars (NSs), escape the stars due to their feeble interactions with matter, and subsequently convert into X-rays in the…
Hard X-ray Excess from the Magnificent Seven Neutron Stars
Christopher Dessert, Joshua W. Foster, Benjamin R. Safdi
We report significant hard X-ray excesses in the energy range 2-8 keV for two nearby isolated neutron stars RX J1856.6-3754 and RX J0420.0-5022. These neutron stars have previously…
X-ray Signatures of Axion Conversion in Magnetic White Dwarf Stars
Christopher Dessert, Andrew J. Long, Benjamin R. Safdi
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 analyse…