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Physical and numerical constraints in building up self-consistent population synthesis models are briefly analysed discussing their application to most of the current synthesis codes widely adopted in Galactic and extragalactic studies.

Astrophysics · Physics 2007-05-23 Alberto Buzzoni

Population annealing is a sequential Monte Carlo scheme well-suited to simulating equilibrium states of systems with rough free energy landscapes. Here we use population annealing to study a binary mixture of hard spheres. Population…

Statistical Mechanics · Physics 2017-07-27 Jared Callaham , Jon Machta

Robotic applications involving people often require advanced perception systems to better understand complex real-world scenarios. To address this challenge, photo-realistic and physics simulators are gaining popularity as a means of…

The absence of direct high redshift observations poses a significant challenge in understanding the properties of first stars. Nonetheless, the cumulative effect of entire stellar populations can be studied with current data. In this work…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-07 Omer Zvi Katz , Diego Redigolo , Tomer Volansky

Much of our current understanding of neutral, atomic gas in galaxies comes from radio observations of the nearby Universe. Until the next generation of instruments allow us to push to much higher redshifts, we must rely mostly upon…

Astrophysics of Galaxies · Physics 2016-06-02 E. C. Elson , S. L. Blyth , A. J. Baker

The recent development of multi-agent simulations brings about a need for population synthesis. It is a task of reconstructing the entire population from a sampling survey of limited size (1% or so), supplying the initial conditions from…

Neural and Evolutionary Computing · Computer Science 2016-11-15 Naoki Hamada , Katsumi Homma , Hiroyuki Higuchi , Hideyuki Kikuchi

Generating dances that are both lifelike and well-aligned with music continues to be a challenging task in the cross-modal domain. This paper introduces PopDanceSet, the first dataset tailored to the preferences of young audiences, enabling…

Sound · Computer Science 2024-12-30 Zhenye Luo , Min Ren , Xuecai Hu , Yongzhen Huang , Li Yao

We present SPISEA (Stellar Population Interface for Stellar Evolution and Atmospheres), an open-source Python package that simulates simple stellar populations. The strength of SPISEA is its modular interface which offers the user control…

Solar and Stellar Astrophysics · Physics 2020-09-09 M. W. Hosek , J. R. Lu , C. Y. Lam , A. K. Gautam , K. E. Lockhart , D. Kim , S. Jia

Obtaining reliable, matched photometry for galaxies imaged by different observatories represents a key challenge in the era of wide-field surveys spanning more than several hundred square degrees. Methods such as flux fitting, profile…

Instrumentation and Methods for Astrophysics · Physics 2015-06-12 Kevin Bundy , David W. Hogg , Tim D. Higgs , Robert C. Nichol , Naoki Yasuda , Karen L. Masters , Dustin Lang , David A. Wake

Digital mobile systems must function with low power, small size and weight, and low cost. High-performance desktop microprocessors, with built-in floating point hardware, are not suitable in these cases. For embedded systems, it can be…

Hardware Architecture · Computer Science 2013-08-01 Ilya Y. Zhbannikov , Gregory W. Donohoe

We present PathoSyn, a unified generative framework for Magnetic Resonance Imaging (MRI) image synthesis that reformulates imaging-pathology as a disentangled additive deviation on a stable anatomical manifold. Current generative models…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Jian Wang , Sixing Rong , Jiarui Xing , Yuling Xu , Weide Liu

The identification and description of point sources is one of the oldest problems in astronomy; yet, even today the correct statistical treatment for point sources remains one of the field's hardest problems. For dim or crowded sources,…

Instrumentation and Methods for Astrophysics · Physics 2022-06-29 Gabriel H. Collin , Nicholas L. Rodd , Tyler Erjavec , Kerstin Perez

Although remarkable progress has been made in image style transfer, style is just one of the components of artistic paintings. Directly transferring extracted style features to natural images often results in outputs with obvious synthetic…

Computer Vision and Pattern Recognition · Computer Science 2025-05-16 Nisha Huang , Weiming Dong , Yuxin Zhang , Fan Tang , Ronghui Li , Chongyang Ma , Xiu Li , Tong-Yee Lee , Changsheng Xu

For more that seventy years, the measurements of fluxes of galaxies at different wavelengths and derived colours have been used to estimate their corresponding cosmological distances. From the fields of galaxy and AGN evolution to precision…

Astrophysics of Galaxies · Physics 2018-06-06 Mara Salvato , Olivier Ilbert , Ben Hoyle

Surveys with submillimetre telescopes are revealing large numbers of gravitationally lensed high-redshift sources. I describe how, in practice, these lensed systems could be simultaneously used to estimate the values of cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-08 Stephen Eales

Clusters of galaxies as gravitational lenses allow to study the stellar content and properties of high-z galaxies much fainter than the usual spectroscopic field surveys. We review the recent results obtained on the identification and study…

Astrophysics · Physics 2009-10-31 Roser Pello

The dissemination of synthetic data can be an effective means of making information from sensitive data publicly available while reducing the risk of disclosure associated with releasing the sensitive data directly. While mechanisms exist…

Methodology · Statistics 2021-09-23 Harrison Quick

A soundscape is defined by the acoustic environment a person perceives at a location. In this work, we propose a framework for mapping soundscapes across the Earth. Since soundscapes involve sound distributions that span varying spatial…

Determining the redshift distribution $n(z)$ of galaxy samples is essential for several cosmological probes including weak lensing. For imaging surveys, this is usually done using photometric redshifts estimated on an object-by-object…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-31 Jörg Herbel , Tomasz Kacprzak , Adam Amara , Alexandre Refregier , Claudio Bruderer , Andrina Nicola

This paper presents a novel methodology for generating realistic abundance maps from hyperspectral imagery using an unsupervised, deep-learning-driven approach. Our framework integrates blind linear hyperspectral unmixing with…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Martina Pastorino , Michael Alibani , Nicola Acito , Gabriele Moser
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