XRISM spectroscopy of AM Herculis reveals bulk velocity and temperature gradients in the radiative cooling accretion column, with derived shock temperature of 24 keV, velocity of 1116 km/s, and density of 5-6 x 10^15 cm^-3.
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X-ray spectral modeling and timing analysis of V1674 Her constrain its white dwarf mass to 1.09-1.12 solar masses, well below the near-Chandrasekhar value expected from its t2~1 day decline time.
citing papers explorer
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Plasma Dynamics of Radiative Cooling Accretion Flow in AM Herculis with XRISM
XRISM spectroscopy of AM Herculis reveals bulk velocity and temperature gradients in the radiative cooling accretion column, with derived shock temperature of 24 keV, velocity of 1116 km/s, and density of 5-6 x 10^15 cm^-3.
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X-ray spectroscopy mass constraints on V1674 Her: the fastest nova does not have a near-Chandrasekhar white dwarf
X-ray spectral modeling and timing analysis of V1674 Her constrain its white dwarf mass to 1.09-1.12 solar masses, well below the near-Chandrasekhar value expected from its t2~1 day decline time.