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Upcoming surveys are predicted to discover galaxy-scale strong lenses on the order of $10^5$, making deep learning methods necessary in lensing data analysis. Currently, there is insufficient real lensing data to train deep learning…

天体物理仪器与方法 · 物理学 2023-11-30 Paxson Swierc , Megan Zhao , Aleksandra Ćiprijanović , Brian Nord

Strong gravitational lensing is a promising probe of the substructure of dark matter halos. Deep learning methods have the potential to accurately identify images containing substructure, and differentiate WIMP dark matter from other well…

宇宙学与河外天体物理 · 物理学 2020-04-09 Stephon Alexander , Sergei Gleyzer , Evan McDonough , Michael W. Toomey , Emanuele Usai

The identity of dark matter remains one of the most pressing questions in physics today. While many promising dark matter candidates have been put forth over the last half-century, to date the true identity of dark matter remains elusive.…

宇宙学与河外天体物理 · 物理学 2021-09-29 Stephon Alexander , Sergei Gleyzer , Hanna Parul , Pranath Reddy , Michael W. Toomey , Emanuele Usai , Ryker Von Klar

Dark matter structures within strong gravitational lens galaxies and along their line of sight leave a gravitational imprint on the multiple images of lensed sources. Strong gravitational lensing provides, therefore, a key test of different…

The difficult task of observing Dark Matter subhaloes is of paramount importance since it would constrain Dark Matter particle properties (cold or warm relic) and confirm once again the longstanding $\Lambda$CDM model. In the near future…

宇宙学与河外天体物理 · 物理学 2019-10-16 Marco Chianese

The application of deep machine learning methods in astronomy has exploded in the last decade, with new models showing remarkably improved performance on benchmark tasks. Not nearly enough attention is given to understanding the models'…

天体物理仪器与方法 · 物理学 2025-10-14 Michelle Ntampaka , A. Ciprijanovic , Ana Maria Delgado , John Soltis , John F. Wu , Mikaeel Yunus , John ZuHone

The subtle and unique imprint of dark matter substructure on extended arcs in strong lensing systems contains a wealth of information about the properties and distribution of dark matter on small scales and, consequently, about the…

宇宙学与河外天体物理 · 物理学 2020-02-25 Johann Brehmer , Siddharth Mishra-Sharma , Joeri Hermans , Gilles Louppe , Kyle Cranmer

Gravitational lensing has been identified as a powerful tool to address fundamental problems in astrophysics at different scales, ranging from exoplanet identification to dark energy and dark matter characterization in cosmology. Image…

宇宙学与河外天体物理 · 物理学 2020-03-17 Andrés A. Plazas

Constraining the distribution of small-scale structure in our universe allows us to probe alternatives to the cold dark matter paradigm. Strong gravitational lensing offers a unique window into small dark matter halos ($<10^{10} M_\odot$)…

The major challenge in today's computer vision scenario is the availability of good quality labeled data. In a field of study like image classification, where data is of utmost importance, we need to find more reliable methods which can…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Aashish Dhawan , Divyanshu Mudgal

Tens of thousands of galaxy-galaxy strong lensing systems are expected to be discovered by the end of the decade. These will form a vast new dataset that can be used to probe subgalactic dark matter structures through its gravitational…

宇宙学与河外天体物理 · 物理学 2024-01-31 Arthur Tsang , Atınç Çağan Şengül , Cora Dvorkin

Recent advances in deep learning have led to the development of accurate and efficient models for various computer vision applications such as classification, segmentation, and detection. However, learning highly accurate models relies on…

计算机视觉与模式识别 · 计算机科学 2021-07-06 Poojan Oza , Vishwanath A. Sindagi , Vibashan VS , Vishal M. Patel

Weak gravitational lensing is the slight distortion of galaxy shapes caused primarily by the gravitational effects of dark matter in the universe. In our work, we seek to invert the weak lensing signal from 2D telescope images to…

宇宙学与河外天体物理 · 物理学 2025-04-22 Brandon Zhao , Aviad Levis , Liam Connor , Pratul P. Srinivasan , Katherine L. Bouman

Astrometry -- the precise measurement of positions and motions of celestial objects -- has emerged as a promising avenue for characterizing the dark matter population in our Galaxy. By leveraging recent advances in simulation-based…

宇宙学与河外天体物理 · 物理学 2022-01-06 Siddharth Mishra-Sharma

In astronomy, neural networks are often trained on simulation data with the prospect of being used on telescope observations. Unfortunately, training a model on simulation data and then applying it to instrument data leads to a substantial…

天体物理仪器与方法 · 物理学 2021-07-16 A. Ćiprijanović , D. Kafkes , K. Downey , S. Jenkins , G. N. Perdue , S. Madireddy , T. Johnston , G. F. Snyder , B. Nord

The study of dark matter substructure through strong gravitational lensing has shown enormous promise in probing the properties of dark matter on sub-galactic scales. This approach has already been used to place strong constraints on a wide…

星系天体物理 · 物理学 2025-03-14 Charles Gannon , Anna Nierenberg , Andrew Benson , Ryan Keeley , Xiaolong Du , Daniel Gilman

Many dark matter (DM) models that are consistent with current cosmological data show differences in the predicted (sub)halo mass function, especially at sub-galactic scales, where observations are challenging due to the inefficiency of star…

宇宙学与河外天体物理 · 物理学 2024-03-18 Atınç Çağan Şengül , Cora Dvorkin

The analysis of optical images of galaxy-galaxy strong gravitational lensing systems can provide important information about the distribution of dark matter at small scales. However, the modeling and statistical analysis of these images is…

宇宙学与河外天体物理 · 物理学 2020-11-30 Adam Coogan , Konstantin Karchev , Christoph Weniger

Strong Lensing is a powerful probe of the matter distribution in galaxies and clusters and a relevant tool for cosmography. Analyses of strong gravitational lenses with Deep Learning have become a popular approach due to these astronomical…

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