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We present a novel method for identifying transients suitable for both strong signal-dominated and background-dominated objects. By employing the unsupervised machine learning algorithm known as Expectation Maximization, we achieve…

Instrumentation and Methods for Astrophysics · Physics 2024-07-25 Martina Karl , Philipp Eller

We propose a new framework to predict stellar properties from light curves. We analyze the light-curve data from the Kepler space mission and develop a novel tool for deriving the stellar rotation periods for main-sequence stars. Using this…

Solar and Stellar Astrophysics · Physics 2024-11-26 Ilay Kamai , Hagai B. Perets

The primary challenge in the study of explosive astrophysical transients is their detection and characterisation using multiple messengers. For this purpose, we have developed a new data-driven discovery framework, based on deep learning.…

High Energy Astrophysical Phenomena · Physics 2020-05-14 Iftach Sadeh

Time-domain astronomy is entering a new era as wide-field surveys with higher cadences allow for more discoveries than ever before. The field has seen an increased use of machine learning and deep learning for automated classification of…

Instrumentation and Methods for Astrophysics · Physics 2022-12-28 Umar. F. Burhanudin , Justyn. R. Maund

We describe the development of a system for an automated, iterative, real-time classification of transient events discovered in synoptic sky surveys. The system under development incorporates a number of Machine Learning techniques, mostly…

Instrumentation and Methods for Astrophysics · Physics 2011-10-24 S. G. Djorgovski , C. Donalek , A. Mahabal , B. Moghaddam , M. Turmon , M. Graham , A. Drake , N. Sharma , Y. Chen

Deep learning techniques have been well explored in the transiting exoplanet field; however, previous work mainly focuses on classification and inspection. In this work, we develop a novel detection algorithm based on a well proven object…

Earth and Planetary Astrophysics · Physics 2022-01-05 Kaiming Cui , Junjie Liu , Fabo Feng , Jifeng Liu

While camera and LiDAR processing have been revolutionized since the introduction of deep learning, radar processing still relies on classical tools. In this paper, we introduce a deep learning approach for radar processing, working…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Daniel Brodeski , Igal Bilik , Raja Giryes

Robots operating in populated environments encounter many different types of people, some of whom might have an advanced need for cautious interaction, because of physical impairments or their advanced age. Robots therefore need to…

Robotics · Computer Science 2017-08-03 Andres Vasquez , Marina Kollmitz , Andreas Eitel , Wolfram Burgard

The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory will discover tens of thousands of extragalactic transients each night. The high volume of alerts demands immediate classification of transient types in order to…

Astrophysics of Galaxies · Physics 2023-01-11 Marina Kisley , Yu-Jing Qin , Ann Zabludoff , Kobus Barnard , Chia-Lin Ko

We identify minimal observing cadence requirements that enable photometric astronomical surveys to detect and recognize fast and explosive transients and fast transient features. Observations in two different filters within a short time…

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…

Instrumentation and Methods for Astrophysics · Physics 2026-05-28 Siddharth Chaini , Federica B. Bianco , Ashish Mahabal

Wide field small aperture telescopes are working horses for fast sky surveying. Transient discovery is one of their main tasks. Classification of candidate transient images between real sources and artifacts with high accuracy is an…

Instrumentation and Methods for Astrophysics · Physics 2019-07-17 Peng Jia , Yifei Zhao , Gang Xue , Dongmei Cai

This paper pioneers the use of neural networks to provide a fast and automatic way to classify lightcurves in massive photometric datasets. As an example, we provide a working neural network that can distinguish microlensing lightcurves…

Astrophysics · Physics 2009-11-07 Vasily Belokurov , N. Wyn Evans , Yann Le Du

Astronomers require efficient automated detection and classification pipelines when conducting large-scale surveys of the (optical) sky for variable and transient sources. Such pipelines are fundamentally important, as they permit rapid…

The TESS mission produces a large amount of time series data, only a small fraction of which contain detectable exoplanetary transit signals. Deep learning techniques such as neural networks have proved effective at differentiating…

We present the Signal Detection using Random-Forest Algorithm (SIDRA). SIDRA is a detection and classification algorithm based on the Machine Learning technique (Random Forest). The goal of this paper is to show the power of SIDRA for quick…

Earth and Planetary Astrophysics · Physics 2015-11-12 D. Mislis , E. Bachelet , K. A. Alsubai , D. M. Bramich , N. Parley

Modern time-domain surveys produce alert streams at a scale that makes exhaustive manual inspection infeasible, requiring automated methods to identify unusual transients for follow-up. In this work, we present an unsupervised anomaly…

Solar and Stellar Astrophysics · Physics 2026-02-16 Leyla Iskandarli , Chris J. Lintott , Steve Croft , Heloise Stevance , Joshua Weston

Here we present a catalog of 12,993 photometrically-classified supernova-like light curves from the Zwicky Transient Facility, along with candidate host galaxy associations. By training a random forest classifier on spectroscopically…

High Energy Astrophysical Phenomena · Physics 2022-02-21 Braden Garretson , Dan Milisavljevic , Jack Reynolds , Kathryn E. Weil , Bhagya Subrayan , John Banovetz , Rachel Lee
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