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- W3100433610 abstract "We propose a novel method to constrain the Milky Way (MW) mass with its corona temperature observations. For a given corona density profile, one can derive its temperature distribution assuming a generalized equilibrium model with nonthermal pressure support. While the derived temperature profile decreases substantially with radius, the X-ray-emission-weighted average temperature, which depends most sensitively on , is quite uniform toward different sight lines, consistent with X-ray observations. For a Navarro–Frenk–White (NFW) total matter distribution, the corona density profile should be cored, and we constrain . For a total matter distribution contributed by an NFW dark matter profile and central baryons, the corona density profile should be cuspy and . Nonthermal pressure support leads to even higher values of , while a lower MW mass may be possible if the corona is accelerating outward. This method is independent of the total corona mass, its metallicity, and temperature at very large radii." @default.
- W3100433610 created "2020-11-23" @default.
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- W3100433610 date "2020-11-24" @default.
- W3100433610 modified "2023-09-25" @default.
- W3100433610 title "Constraining the Milky Way Mass with Its Hot Gaseous Halo" @default.
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- W3100433610 doi "https://doi.org/10.3847/2041-8213/abc749" @default.
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