Simulations predict time-dependent gamma-ray lines from r-process and iron-peak decays in accretion-induced white dwarf collapse, detectable to ~10 Mpc and absent in neutron star mergers.
Shuttet al., The GammaTPC Gamma-Ray Tele- scope Concept, arXiv:2502.14841 [astro-ph.IM] (2025)
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Calculations indicate low probabilities (up to 11% for 89Sr, 5% for 22Na) of COSI detecting gamma-ray lines from i-process isotopes in nearby post-AGB stars or white dwarfs.
The minimal majoron framework permits simultaneous majoron dark matter and thermal leptogenesis in a constrained cosmological window set by freeze-in production, warm dark matter bounds, and indirect detection limits.
citing papers explorer
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Gamma-ray Signatures of r-Process Radioactivity from the Collapse of Magnetized White Dwarfs
Simulations predict time-dependent gamma-ray lines from r-process and iron-peak decays in accretion-induced white dwarf collapse, detectable to ~10 Mpc and absent in neutron star mergers.
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Can COSI detect $\gamma$-ray lines from rare isotopes produced in the astrophysical intermediate neutron-capture process?
Calculations indicate low probabilities (up to 11% for 89Sr, 5% for 22Na) of COSI detecting gamma-ray lines from i-process isotopes in nearby post-AGB stars or white dwarfs.
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The Majoron Cosmological Window: Dark Matter and Thermal Leptogenesis
The minimal majoron framework permits simultaneous majoron dark matter and thermal leptogenesis in a constrained cosmological window set by freeze-in production, warm dark matter bounds, and indirect detection limits.