An algebraic degeneracy makes all reionization-history observables sensitive only to the product of escape fraction and star formation efficiency, explaining parameter tensions and limiting dark matter constraints from reionization data.
galpy: A python library for galactic dynamics.The Astrophysical Journal Supplement Series216, 29 (2015)
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In a bias-cleaned sample of main-sequence stars, magnetic activity above solar maximum accounts for non-detection of p-modes in 32% of cases where amplitude is predicted sufficient, while stars with photometric activity index above 2000 ppm have 98.3% probability of no detected oscillations.
Magnetic activity induces frequency shifts that bias asteroseismic age estimates by up to 10% and helium abundance by up to 3% in solar-like stars.
citing papers explorer
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A structural degeneracy explains reionization tensions and limits dark matter constraints
An algebraic degeneracy makes all reionization-history observables sensitive only to the product of escape fraction and star formation efficiency, explaining parameter tensions and limiting dark matter constraints from reionization data.
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Revisiting the impact of stellar magnetic activity on the detectability of solar-like oscillations by Kepler
In a bias-cleaned sample of main-sequence stars, magnetic activity above solar maximum accounts for non-detection of p-modes in 32% of cases where amplitude is predicted sufficient, while stars with photometric activity index above 2000 ppm have 98.3% probability of no detected oscillations.
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Influence of magnetic activity on the determination of stellar parameters through asteroseismology
Magnetic activity induces frequency shifts that bias asteroseismic age estimates by up to 10% and helium abundance by up to 3% in solar-like stars.