Exploring the hidden Universe: a novel phenomenological approach for recovering arbitrary gravitational-wave millilensing configurations

被引:22
作者
Liu, Anna [1 ]
Wong, Isaac C. F. [1 ]
Leong, Samson H. W. [1 ]
More, Anupreeta [2 ,3 ]
Hannuksela, Otto A. [1 ]
Li, Tjonnie G. E. [1 ,4 ,5 ]
机构
[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
[2] Interuniv Ctr Astron & Astrophys IUCAA, Post Bag 4, Pune 411007, India
[3] Kavli Inst Phys & Math Universe IPMU, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan
[4] Katholieke Univ Leuven, Inst Theoret Phys, Celestijnenlaan 200D, B-3001 Leuven, Belgium
[5] Katholieke Univ Leuven, Dept Elect Engn ESAT, Kasteelpk Arenberg 10, B-3001 Leuven, Belgium
基金
美国国家科学基金会;
关键词
gravitational lensing: micro; gravitational lensing: strong; gravitational waves; dark matter; DARK-MATTER SUBSTRUCTURE; PRIMORDIAL BLACK-HOLES; LENSING SIGNATURES; SEARCH; PROBE; HALOS; SPEED;
D O I
10.1093/mnras/stad1302
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Since the first detection of gravitational waves in 2015, gravitational-wave astronomy has emerged as a rapidly advancing field that holds great potential for studying the cosmos, from probing the properties of black holes to testing the limits of our current understanding of gravity. One important aspect of gravitational-wave astronomy is the phenomenon of gravitational lensing, where massive intervening objects can bend and magnify gravitational waves, providing a unique way to probe the distribution of matter in the Universe, as well as finding applications to fundamental physics, astrophysics, and cosmology. However, current models for gravitational-wave millilensing-a specific form of lensing where small-scale astrophysical objects can split a gravitational wave signal into multiple copies-are often limited to simple isolated lenses, which is not realistic for complex lensing scenarios. In this paper, we present a novel phenomenological approach to incorporate millilensing in data analysis in a model-independent fashion. Our approach enables the recovery of arbitrary lens configurations without the need for extensive computational lens modelling, making it a more accurate and computationally efficient tool for studying the distribution of matter in the Universe using gravitational-wave signals. When gravitational-wave lensing observations become possible, our method could provide a powerful tool for studying complex lens configurations in the future.
引用
收藏
页码:4149 / 4160
页数:12
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