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The kinetic Sunyaev-Zeldovich (kSZ) effect will be an important source of cosmological and astrophysical information in upcoming surveys of the cosmic microwave background (CMB). However, the kSZ effect will also act as the dominant source…

宇宙学与河外天体物理 · 物理学 2023-04-10 Simon Foreman , Selim C. Hotinli , Mathew S. Madhavacheril , Alexander van Engelen , Christina D. Kreisch

We explore the significance of noise from thermal Sunyaev-Zel{'}dovich (tSZ) signals for cluster detection using cosmic microwave background (CMB) surveys. The noise arises both from neighboring objects and also from haloes below the…

宇宙学与河外天体物理 · 物理学 2022-03-30 Srinivasan Raghunathan

Autoregressive models have become the de facto choice for sequence generation tasks, but standard approaches treat digits as independent tokens and apply cross-entropy loss, overlooking the coherent structure of numerical sequences. This…

计算与语言 · 计算机科学 2025-05-29 Xiang Fei , Jinghui Lu , Qi Sun , Hao Feng , Yanjie Wang , Wei Shi , An-Lan Wang , Jingqun Tang , Can Huang

The thermal Sunyaev-Zel'dovich (tSZ) effect provides a powerful probe of the thermal pressure of ionised gas in galaxy clusters and the cosmic web; constrained simulations reconstruct the mass and velocity fields of the local Universe. We…

宇宙学与河外天体物理 · 物理学 2026-01-23 Richard Stiskalek , Harry Desmond

Since its original formulation the Sunyaev-Zeldovich (SZ) effect has been recognized as a ``powerful laboratory'' for our comprehension of physical processes in cosmic structures and to derive crucial information on some general properties…

天体物理学 · 物理学 2009-06-23 Carlo Burigana

We propose two detection techniques that take advantage of a small sky area approximation and are based on modifications of the "internal linear combination" (ILC) method, an approach widely used in Cosmology for the separation of the…

天体物理仪器与方法 · 物理学 2012-06-21 R. Vio , P. Andreani , E. P. R. G. Ramos , A. da Silva

We propose a new method for the discrimination of sub-micron nuclear recoil tracks from an instrumental background in fine-grain nuclear emulsions used in the directional dark matter search. The proposed method uses a 3D Convolutional…

高能物理 - 实验 · 物理学 2022-02-17 Artem Golovatiuk , Andrey Ustyuzhanin , Andrey Alexandrov , Giovanni De Lellis

Solar panel mapping has gained a rising interest in renewable energy field with the aid of remote sensing imagery. Significant previous work is based on fully supervised learning with classical classifiers or convolutional neural networks…

图像与视频处理 · 电气工程与系统科学 2021-03-18 Jue Zhang , Xiuping Jia , Jiankun Hu

We use combined South Pole Telescope (SPT)+Planck temperature maps to analyze the circumgalactic medium (CGM) encompassing 138,235 massive, quiescent 0.5 $\leq$ z $\leq$ 1.5 galaxies selected from data from the Dark Energy Survey (DES) and…

宇宙学与河外天体物理 · 物理学 2023-06-21 Jeremy Meinke , Kathrin Böckmann , Seth Cohen , Philip Mauskopf , Evan Scannapieco , Richard Sarmento , Emily Lunde , J'Neil Cottle

Imaging Atmospheric Cherenkov Telescopes (IACT) of TAIGA astrophysical complex allow to observe high energy gamma radiation helping to study many astrophysical objects and processes. TAIGA-IACT enables us to select gamma quanta from the…

天体物理仪器与方法 · 物理学 2022-11-17 E. O. Gres , A. P. Kryukov

Refer to the literature of lung nodule classification, many studies adopt Convolutional Neural Networks (CNN) to directly predict the malignancy of lung nodules with original thoracic Computed Tomography (CT) and nodule location. However,…

计算机视觉与模式识别 · 计算机科学 2018-02-13 Botong Wu , Zhen Zhou , Jianwei Wang , Yizhou Wang

The determination of the morphology of galaxy clusters has important repercussion on their cosmological and astrophysical studies. In this paper we address the morphological characterisation of synthetic maps of the Sunyaev--Zel'dovich (SZ)…

宇宙学与河外天体物理 · 物理学 2018-03-28 Giammarco Cialone , Marco De Petris , Federico Sembolini , Gustavo Yepes , Anna Silvia Baldi , Elena Rasia

Sensitive surveys of the Cosmic Microwave Background will detect thousands of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect. Two SZ observables, the central or maximum and integrated Comptonization parameters y_max and Y, relate in…

天体物理学 · 物理学 2009-11-13 Daniel R. Wik , Craig L. Sarazin , Paul M. Ricker , Scott W. Randall

Optimizing or sampling complex cost functions of combinatorial optimization problems is a longstanding challenge across disciplines and applications. When employing family of conventional algorithms based on Markov Chain Monte Carlo (MCMC)…

机器学习 · 计算机科学 2025-08-15 Dmitrii Dobrynin , Masoud Mohseni , John Paul Strachan

The Sunyaev-Zel'dovich (SZ) effect from clusters of galaxies should yield a significant signal in cosmic microwave background(CMB) experiments at small angular scales ($\ell \ga 1000$). Experiments with sufficient frequency coverage should…

天体物理学 · 物理学 2007-05-23 Gilbert P. Holder , John E. Carlstrom

The Cherenkov Telescope Array (CTA) will be the world's leading ground-based gamma-ray observatory allowing us to study very high energy phenomena in the Universe. CTA will produce huge data sets, of the order of petabytes, and the…

天体物理仪器与方法 · 物理学 2018-10-02 S. Mangano , C. Delgado , M. Bernardos , M. Lallena , J. J. Rodríguez Vázquez

The thermal Sunyaev-Zel'dovich (tSZ) effect directly measures the thermal pressure of free electrons integrated along the line of sight and thus contains valuable information on the thermal history of the universe. However, the redshift…

宇宙学与河外天体物理 · 物理学 2011-03-17 Jiawei Shao , Pengjie Zhang , Weipeng Lin , Yipeng Jing

Dark matter cannot be observed directly, but its weak gravitational lensing slightly distorts the apparent shapes of background galaxies, making weak lensing one of the most promising probes of cosmology. Several observational studies have…

宇宙学与河外天体物理 · 物理学 2018-12-18 Dezső Ribli , Bálint Ármin Pataki , István Csabai

We present a new approach based on Supervised Machine Learning (SML) algorithms to infer key physical properties of galaxies (density, metallicity, column density and ionization parameter) from their emission line spectra. We introduce a…

星系天体物理 · 物理学 2016-12-21 Graziano Ucci , Andrea Ferrara , Simona Gallerani , Andrea Pallottini

We use an analytic model to investigate the theoretical uncertainty on the thermal Sunyaev-Zel'dovich (SZ) power spectrum due to astrophysical uncertainties in the thermal structure of the intracluster medium. Our model accounts for star…

宇宙学与河外天体物理 · 物理学 2015-05-19 Laurie D. Shaw , Daisuke Nagai , Suman Bhattacharya , Erwin T. Lau
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