https://scholars.lib.ntu.edu.tw/handle/123456789/633936
標題: | Einstein rings modulated by wavelike dark matter from anomalies in gravitationally lensed images | 作者: | Amruth, Alfred Broadhurst, Tom Lim, Jeremy Oguri, Masamune Smoot, George F. Diego, Jose M. Leung, Enoch Emami, Razieh Li, Juno TZI-HONG CHIUEH HSI-YU SCHIVE Yeung, Michael C.H. Li, Sung Kei |
公開日期: | 1-六月-2023 | 卷: | 7 | 期: | 6 | 來源出版物: | Nature Astronomy | 摘要: | Unveiling the true nature of dark matter, which manifests itself only through gravity, is one of the principal quests in physics. Leading candidates for dark matter are weakly interacting massive particles or ultralight bosons (axions), at opposite extremes in mass scales, that have been postulated by competing theories to solve deficiencies in the Standard Model of particle physics. Whereas dark matter weakly interacting massive particles behave like discrete particles (ϱDM), quantum interference between dark matter axions is manifested as waves (ψDM). Here, we show that gravitational lensing leaves signatures in multiply lensed images of background galaxies that reveal whether the foreground lensing galaxy inhabits a ϱDM or ψDM halo. Whereas ϱDM lens models leave well documented anomalies between the predicted and observed brightnesses and positions of multiply lensed images, ψDM lens models correctly predict the level of anomalies remaining with ϱDM lens models. More challengingly, when subjected to a battery of tests for reproducing the quadruply lensed triplet images in the system HS 0810+2554, ψDM is able to reproduce all aspects of this system whereas ϱDM often fails. The ability of ψDM to resolve lensing anomalies even in demanding cases such as HS 0810+2554, together with its success in reproducing other astrophysical observations, tilt the balance toward new physics invoking axions. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/633936 | ISSN: | 2397-3366 | DOI: | 10.1038/s41550-023-01943-9 |
顯示於: | 物理學系 |
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