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A Tilt in the Dark Matter Halo of the Galaxy

  • Authors: Jiwon Jesse Han, Rohan P. Naidu, Charlie Conroy, Ana Bonaca, Dennis Zaritsky, Nelson Caldwell, Phillip Cargile, Benjamin D. Johnson, Vedant Chandra, Joshua S. Speagle, 佳 士 沈, Yuan-Sen Ting, 源 森 丁, Turner Woody

Jiwon Jesse Han et al 2022 The Astrophysical Journal 934 .

  • Provider: AAS Journals

Caption: Figure 5.

Excess fraction of stars in diagonally opposing octants of the Galaxy as a function of time, defined in Equation (1). This diagonal excess is an indicator of the degree to which orbits are spatially mixed. In the N-body and tilted halo models, the initial asymmetry persists beyond 5 Gyr, while in the spherical halo models the asymmetry is erased by the first gigayear.

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