Light trapping by the dark matter
| Autor: | Manoranjan Khan, Rajkumar Roychoudhury, Aniruddha Mitra |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Reflector (photography) Dark matter Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Ray Cosmology Galaxy law.invention Stars Space and Planetary Science law 0103 physical sciences Halo 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Bose–Einstein condensate |
| Zdroj: | Astrophysics and Space Science. 365 |
| ISSN: | 1572-946X 0004-640X |
| DOI: | 10.1007/s10509-020-03826-1 |
| Popis: | Considering the dark matter as self-gravitating Bose-Einstein condensate in a gravito-chemical equilibrium state, we have studied the light trajectory through the halo. Found that depending on the initial direction cosine of the light ray, there are three types of trajectories: (a) the refracted light i.e. light which can refracts away from the halo to the out side, (b) the trapped light i.e. light that is trapped into the halo i.e. an observer, situated outside of the halo, can not observe it and (c) the reflected light: in this case the halo behaves as a perfect reflector to the outside light. The light trapping can introduce asymmetry in the observed spectrum and modify the apparent number of stars in a dark matter dominated galaxy. |
| Databáze: | OpenAIRE |
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