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Photometric classification of supernovae (SNe) is imperative as recent and upcoming optical time-domain surveys, such as the Large Synoptic Survey Telescope (LSST), overwhelm the available resources for spectrosopic follow-up. Here we…

High Energy Astrophysical Phenomena · Physics 2019-10-28 V. A. Villar , E. Berger , G. Miller , R. Chornock , A. Rest , D. O. Jones , M. R. Drout , R. J. Foley , R. Kirshner , R. Lunnan , E. Magnier , D. Milisavljevic , N. Sanders , D. Scolnic

In the era of large astronomical surveys, photometric classification of supernovae (SNe) has become an important research field due to limited spectroscopic resources for candidate follow-up and classification. In this work, we present a…

Instrumentation and Methods for Astrophysics · Physics 2016-12-14 A. Möller , V. Ruhlmann-Kleider , C. Leloup , J. Neveu , N. Palanque-Delabrouille , J. Rich , R. Carlberg , C. Lidman , C. Pritchet

We propose a novel deep learning tool in order to study the evolution of dark energy models. The aim is to combine two architectures: the Recurrent Neural Networks (RNN) and the Bayesian Neural Networks (BNN), we named this full network as…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-18 Celia Escamilla-Rivera , Maryi Alejandra Carvajal Quintero , S. Capozziello

Gravitationally lensed sources may have unresolved or blended multiple images, and for time varying sources the lightcurves from individual images can overlap. We use convolutional neural nets to both classify the lightcurves as due to…

Instrumentation and Methods for Astrophysics · Physics 2022-07-28 Mikhail Denissenya , Eric V. Linder

We present a novel method to produce empirical generative models of all kinds of astronomical transients from datasets of unlabeled light curves. Our hybrid model, that we call ParSNIP, uses a neural network to model the unknown intrinsic…

Instrumentation and Methods for Astrophysics · Physics 2021-12-08 Kyle Boone

Images are an important data source for diagnosis and treatment of oral diseases. The manual classification of images may lead to misdiagnosis or mistreatment due to subjective errors. In this paper an image classification model based on…

Computer Vision and Pattern Recognition · Computer Science 2017-05-26 Sultan Imangaliyev , Monique H. van der Veen , Catherine M. C. Volgenant , Bruno G. Loos , Bart J. F. Keijser , Wim Crielaard , Evgeni Levin

We present a technique to measure lightcurves of time-variable point sources on a spatially structured background from imaging data. The technique was developed to measure light curves of SNLS supernovae in order to infer their distances.…

Instrumentation and Methods for Astrophysics · Physics 2015-06-16 P. Astier , P. El Hage , J. Guy , D. Hardin , M. Betoule , S. Fabbro , N. Fourmanoit , R. Pain , N. Regnault

We present a novel method of classifying Type Ia supernovae using convolutional neural networks, a neural network framework typically used for image recognition. Our model is trained on photometric information only, eliminating the need for…

Instrumentation and Methods for Astrophysics · Physics 2021-11-10 Helen Qu , Masao Sako , Anais Möller , Cyrille Doux

Temporal variations of apparent magnitude, called light curves, are observational statistics of interest captured by telescopes over long periods of time. Light curves afford the exploration of Space Domain Awareness (SDA) objectives such…

Instrumentation and Methods for Astrophysics · Physics 2022-09-01 Imène R. Goumiri , Alec M. Dunton , Amanda L. Muyskens , Benjamin W. Priest , Robert E. Armstrong

A method is presented for automated photometric classification of supernovae (SNe) as Type-Ia or non-Ia. A two-step approach is adopted in which: (i) the SN lightcurve flux measurements in each observing filter are fitted separately; and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 N. V. Karpenka , F. Feroz , M. P. Hobson

With large numbers of transients discovered by current and future imaging surveys, machine learning is increasingly applied to light curve and host galaxy properties to select events for follow-up. However, finding rare types of transients…

Instrumentation and Methods for Astrophysics · Physics 2025-12-17 Xinyue Sheng , Tuan Dung Pham , Zichi Zhang , Matt Nicholl , Thai Son Mai

Historically, light curve studies of supernovae (SNe) and other transient classes have focused on individual objects with copious and high signal-to-noise observations. In the nascent era of wide field transient searches, objects with…

Instrumentation and Methods for Astrophysics · Physics 2015-06-19 Nathan Sanders , Michael Betancourt , Alicia Soderberg

With the upcoming Vera C.~Rubin Observatory Legacy Survey of Space and Time (LSST), it is expected that only $\sim 0.1\%$ of all transients will be classified spectroscopically. To conduct studies of rare transients, such as Type I…

High Energy Astrophysical Phenomena · Physics 2023-07-18 Brian Hsu , Griffin Hosseinzadeh , V. Ashley Villar , Edo Berger

Hyper-spectral images are images captured from a satellite that gives spatial and spectral information of specific region.A Hyper-spectral image contains much more number of channels as compared to a RGB image, hence containing more…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Uphar Singh , Tushar Musale , Ranjana Vyas , O. P. Vyas

This work is focused on the morphological classification of galaxies following the Hubble sequence in which the different classes are arranged in a hierarchy. The proposed method, BCNN, is composed of two main modules. First, a…

Instrumentation and Methods for Astrophysics · Physics 2024-09-04 Jonathan Serrano-Pérez , Raquel Díaz Hernández , L. Enrique Sucar

Photometric classifications of supernova (SN) light curves have become necessary to utilize the full potential of large samples of observations obtained from wide-field photometric surveys, such as the Zwicky Transient Facility (ZTF) and…

In the past decade, deep neural networks (DNNs) came to the fore as the leading machine learning algorithms for a variety of tasks. Their raise was founded on market needs and engineering craftsmanship, the latter based more on trial and…

Machine Learning · Computer Science 2021-04-14 Omry Cohen , Or Malka , Zohar Ringel

Recent advances in neural rendering have achieved impressive results on photorealistic shading and relighting, by using a multilayer perceptron (MLP) as a regression model to learn the rendering equation from a real-world dataset. Such…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Zhuo He , Yingdong Ru , Qianying Liu , Paul Henderson , Nicolas Pugeault

We present an image classification algorithm using deep learning convolutional neural network architecture, which classifies the morphologies of eclipsing binary systems based on their light curves. The algorithm trains the machine with…

Solar and Stellar Astrophysics · Physics 2023-06-06 Burak Ulas

Automated classification of supernovae (SNe) based on optical photometric light curve information is essential in the upcoming era of wide-field time domain surveys, such as the Legacy Survey of Space and Time (LSST) conducted by the Rubin…