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相关论文: Predicting light curves of RR Lyrae variables usin…

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Determining the physical parameters of pulsating variable stars such as RR Lyrae is essential for understanding their internal structure, pulsation mechanisms, and evolutionary state. In this study, we present a machine learning framework…

太阳与恒星天体物理 · 物理学 2025-07-08 Nitesh Kumar , Harinder P. Singh , Oleg Malkov , Santosh Joshi , Kefeng Tan , Philippe Prugniel , Anupam Bhardwaj

We present a machine learning method to estimate the physical parameters of classical pulsating stars such as RR Lyrae and Cepheid variables based on an automated comparison of their theoretical and observed light curve parameters at…

太阳与恒星天体物理 · 物理学 2023-03-27 Anupam Bhardwaj , Earl P. Bellinger , Shashi M. Kanbur , Marcella Marconi

In this paper, we calibrate the luminosity relation of gamma-ray bursts (GRBs) by Artificial Neural Networks (ANN) which is employed to analyze the Pantheon+ sample of type Ia supernovae (SNe Ia) in a manner independent of cosmological…

宇宙学与河外天体物理 · 物理学 2025-07-25 Zhen Huang , Xin Luo , Bin Zhang , Jianchao Feng , Puxun Wu , Yu Liu , Nan Liang

RR Lyrae stars (RRLs) are old pulsating variables widely used as metallicity tracers due to the correlation between their metal abundances and light curve morphology. With ESA Gaia DR3 providing light curves for about 270,000 RRLs, there is…

太阳与恒星天体物理 · 物理学 2025-05-28 Lorenzo Monti , Tatiana Muraveva , Alessia Garofalo , Gisella Clementini , Maria Letizia Valentini

The artificial neural network (ANN) is a well-established mathematical technique for data prediction, based on the identification of correlations and pattern recognition in input training sets. We present the application of ANNs to predict…

星系天体物理 · 物理学 2014-05-05 Hossein Teimoorinia , Sara L. Ellison

We present a study of simultaneous determination of mean distance and reddening to the Small Magellanic Cloud (SMC) using the two photometric band RR Lyrae data. Currently available largest number of highly accurate and precise light curve…

太阳与恒星天体物理 · 物理学 2017-11-20 Sukanta Deb

A new approach to estimating photometric redshifts - using Artificial Neural Networks (ANNs) - is investigated. Unlike the standard template-fitting photometric redshift technique, a large spectroscopically-identified training set is…

天体物理学 · 物理学 2009-11-07 Andrew E. Firth , Ofer Lahav , Rachel S. Somerville

Achieving maximum scientific results from the overwhelming volume of astronomical data to be acquired over the next few decades will demand novel, fully automatic methods of data analysis. Artificial intelligence approaches hold great…

Intensive reverberation mapping monitoring programs combine ground-based photometric observations from different telescopes, requiring intercalibration of lightcurves to reduce systematic instrumental differences. We present a new iterative…

天体物理仪器与方法 · 物理学 2025-06-02 Roberta Vieliute , Juan V. Hernández Santisteban , Keith Horne , Hannah Cornfield

Variable stars of RR Lyrae type are a prime tool to obtain distances to old stellar populations in the Milky Way, and one of the main aims of the Vista Variables in the Via Lactea (VVV) near-infrared survey is to use them to map the…

Reliable extraction of cosmological information from observed cosmic microwave background (CMB) maps may require removal of strongly foreground contaminated regions from the analysis. In this article, we employ an artificial neural network…

宇宙学与河外天体物理 · 物理学 2023-03-13 Srikanta Pal , Pallav Chanda , Rajib Saha

Throughout this paper we present a new method to detect and measure emission lines in J-PAS up to $z = 0.35$. J-PAS will observe $8000$~deg$^2$ of the northern sky in the upcoming years with 56 photometric bands. The release of such amount…

The transit method is one of the most relevant exoplanet detection techniques, which consists of detecting periodic eclipses in the light curves of stars. This is not always easy due to the presence of noise in the light curves, which is…

RR~Lyrae variables are widely used tracers of Galactic halo structure and kinematics, but they can also serve to constrain the distribution of the old stellar population in the Galactic bulge. With the aim of improving their near-infrared…

太阳与恒星天体物理 · 物理学 2018-05-02 Gergely Hajdu , István Dékány , Márcio Catelan , Eva K. Grebel , Johanna Jurcsik

In this paper we introduce PkANN, a freely available software package for interpolating the non-linear matter power spectrum, constructed using Artificial Neural Networks (ANNs). Previously, using Halofit to calculate matter power spectrum,…

宇宙学与河外天体物理 · 物理学 2015-06-18 Shankar Agarwal , Filipe B. Abdalla , Hume A. Feldman , Ofer Lahav , Shaun A. Thomas

In this experiment, we created a Multiple-Input Neural Network, consisting of Convolutional and Multi-layer Neural Networks. With this setup the selected highest-performing neural network was able to distinguish variable stars based on the…

太阳与恒星天体物理 · 物理学 2022-10-26 T. Szklenár , A. Bódi , D. Tarczay-Nehéz , K. Vida , Gy. Mező , R. Szabó

Aims. We present an innovative artificial neural network (ANN) architecture, called Generative ANN (GANN), that computes the forward model, that is it learns the function that relates the unknown outputs (stellar atmospheric parameters, in…

天体物理仪器与方法 · 物理学 2016-10-19 C. Dafonte , D. Fustes , M. Manteiga , D. Garabato , M. A. Alvarez , A. Ulla , C. Allende Prieto

We explore the potential of an artificial neural network (ANN) based method intelligence to probe the propagation of cosmic $\gamma$-ray photons in the extragalactic Universe. The journey of $\gamma$-rays emitted from a distant source like…

高能天体物理现象 · 物理学 2021-09-29 K K Singh , V K Dhar , P J Meintjes

RR Lyrae stars are useful chemical tracers thanks to the empirical relationship between their heavy-element abundance and the shape of their light curves. However, the consistent and accurate calibration of this relation across multiple…

太阳与恒星天体物理 · 物理学 2022-05-31 István Dékány , Eva K. Grebel

Astrophysical observations taken from Earth are subject to weather, environmental, and scientific constraints that lead to sparse, irregular light curves. On the eve of the Vera C. Rubin Observatory Legacy Survey of Space and Time, its…

天体物理仪器与方法 · 物理学 2026-05-28 Siddharth Chaini , Federica B. Bianco , Ashish Mahabal
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