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| Svag gravitationslinsning× | Halo Occupation Distribution× | |
|---|---|---|
| Ämnesområde | Astronomi | Astronomi |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1992 | 2000 |
| Upphovsperson≠ | Nick Kaiser | Jia Peacock |
| Typ≠ | Observational measurement method | Statistical modeling method |
| Ursprungskälla≠ | Kaiser, N. (1992). Weak gravitational lensing of distant galaxies. Astrophysical Journal, 388, 272-286. DOI ↗ | Peacock, J. A., & Smith, R. E. (2000). Halo occupation numbers and galaxy bias. Monthly Notices of the Royal Astronomical Society, 318(4), 1144-1156. DOI ↗ |
| Alias | Weak Lensing, Cosmic Shear, Lensing Distortion | HOD, Halo Model, Galaxy-Halo Connection |
| Närliggande | 3 | 3 |
| Sammanfattning≠ | Weak gravitational lensing occurs when light from distant sources bends slightly as it travels through the universe, passing through the gravitational fields of matter concentrations. Proposed theoretically by Nick Kaiser in 1992, this subtle effect has become one of the most powerful cosmological probes, directly revealing the distribution of all matter (dark and luminous) across cosmic distances. | Halo Occupation Distribution (HOD) modeling is a framework for relating observed galaxy clustering to the distribution of galaxies within dark matter halos. Developed by Jia Peacock and others around 2000, HOD provides a flexible, physically motivated approach to interpreting galaxy surveys and understanding how galaxies populate dark matter halos across cosmic time. |
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