Closed-Form of the Local Galactic Potential and Stellar Distribution Function from Gaia DR3
The local dark matter density determines the strength of the signal expected in direct-detection experiments, yet published estimates from stellar motions disagree by more than their errors, and the most recent machine-learning analysis of Gaia data finds a local density consistent with zero. According to Jeans' theorem, a distribution function built from integrals of motion satisfies the collisionless Boltzmann equation (CBE) trivially for any choice of potential, so a search that simultaneously fits the distribution function and the potential to the CBE identifies neither. Our pipeline instead estimates the distribution function in isolation, linearizing the equation in terms of acceler...
| Authors | Indranil Das, Adam Kamoski, Dora Demiri et al. |
|---|---|
| Primary category | astro-ph.GA |
| Published | 8 September 2026 |
| Last updated at source | 8 September 2026 |
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