Hard X-ray Excess from the Magnificent Seven Neutron Stars

15 Nov 2020 Dessert Christopher Foster Joshua W. Safdi Benjamin R.

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 been observed in soft X-rays to have nearly thermal spectra at temperatures ~100 eV, which are thought to arise from the warm neutron star surfaces... (read more)

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  • HIGH ENERGY ASTROPHYSICAL PHENOMENA