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In November 2019 we began operating FLEET (Finding Luminous and Exotic Extragalactic Transients), a machine learning algorithm designed to photometrically identify Type I superluminous supernovae (SLSNe) in transient alert streams. Using…

We present a study of the detectability of transient events associated with galaxies for the Gaia European Space Agency astrometric mission. We simulated the on-board detections, and on-ground processing for a mock galaxy catalogue to…

Large time-domain sky surveys generate extensive multi-year catalogs of light curves in which scientifically valuable transients, such as supernovae (SNe), are vastly outnumbered by artifacts and routine star variability. While supervised…

天体物理仪器与方法 · 物理学 2026-03-11 Semenikhin T. A. , Kornilov M. V. , Pruzhinskaya M. V. , Krushinsky V. V. , Malanchev K. L. , Dodin A.

Early-time spectroscopy of supernovae (SNe), acquired within days of explosion, yields crucial insights into their outermost ejecta layers, facilitating the study of their environments, progenitor systems, and explosion mechanisms. Recent…

高能天体物理现象 · 物理学 2026-01-28 Harry Addison , Chris Frohmaier , Kate Maguire , Robert C. Nichol , Isobel Hook , Stephen J. Smartt

Known for their efficiency in analyzing large data sets, machine learning classifiers are widely used in wide-field sky surveys. The upcoming Vera C. Rubin Observatory Legacy of Time and Space Survey (LSST) will generate millions of alerts…

Modern astronomical surveys, such as the Zwicky Transient Facility (ZTF), are capable of detecting thousands of transient events per year, necessitating the use of automated and scalable data analysis techniques. Recent advances in machine…

天体物理仪器与方法 · 物理学 2025-04-17 Betty X. Hu , Avi Loeb

Over the past decade wide-field optical time-domain surveys have increased the discovery rate of transients to the point that $\lesssim 10\%$ are being spectroscopically classified. Despite this, these surveys have enabled the discovery of…

高能天体物理现象 · 物理学 2020-12-02 Sebastian Gomez , Edo Berger , Peter K. Blanchard , Griffin Hosseinzadeh , Matt Nicholl , V. Ashley Villar , Yao Yin

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…

星系天体物理 · 物理学 2023-01-11 Marina Kisley , Yu-Jing Qin , Ann Zabludoff , Kobus Barnard , Chia-Lin Ko

State of the art exoplanet transit surveys are producing ever increasing quantities of data. To make the best use of this resource, in detecting interesting planetary systems or in determining accurate planetary population statistics,…

The Transiting Exoplanet Survey Satellite (TESS) is surveying a large fraction of the sky, generating a vast database of photometric time series data that requires thorough analysis to identify exoplanetary transit signals. Automated…

地球与行星天体物理 · 物理学 2025-04-15 Helem Salinas , Rafael Brahm , Greg Olmschenk , Richard K. Barry , Karim Pichara , Stela Ishitani Silva , Vladimir Araujo

Astronomical transients, such as supernovae and other rare stellar explosions, have been instrumental in some of the most significant discoveries in astronomy. New astronomical sky surveys will soon record unprecedented numbers of…

天体物理仪器与方法 · 物理学 2023-11-30 Hali Huang , Daniel Muthukrishna , Prajna Nair , Zimi Zhang , Michael Fausnaugh , Torsha Majumder , Ryan J. Foley , George R. Ricker

The Transiting Exoplanet Survey Satellite (TESS) is the latest observational effort to find exoplanets and map bright transient optical phenomena. Supernovae (SN) are particularly interesting as cosmological standard candles for…

宇宙学与河外天体物理 · 物理学 2021-05-26 B. W. Holwerda , S. Knabel , R. C. Steele , L. Strolger , J. Kielkopf , A. Jacques , W. Roemer

We present LAISS (Lightcurve Anomaly Identification and Similarity Search), an automated pipeline to detect anomalous astrophysical transients in real-time data streams. We deploy our anomaly detection model on the nightly ZTF Alert Stream…

The Bright Transient Survey (BTS) aims to obtain a classification spectrum for all bright ($m_\mathrm{peak}\,\leq\,18.5\,$mag) extragalactic transients found in the Zwicky Transient Facility (ZTF) public survey. BTS critically relies on…

HERMES (High Energy Rapid Modular Ensemble of Satellites) pathfinder is an in-orbit demonstration consisting of a constellation of six 3U nano-satellites hosting simple but innovative detectors for the monitoring of cosmic high-energy…

高能天体物理现象 · 物理学 2023-09-06 Riccardo Crupi , Giuseppe Dilillo , Kester Ward , Elisabetta Bissaldi , Fabrizio Fiore , Andrea Vacchi

In this work we explore the applicability of unsupervised machine learning algorithms to finding radio transients. Facilities such as the Square Kilometre Array (SKA) will provide huge volumes of data in which to detect rare transients; the…

We present an algorithm for classifying the nearby transient objects detected by the Gaia satellite. The algorithm will use the low-resolution spectra from the blue and red spectro-photometers on board of the satellite. Taking a Bayesian…

天体物理仪器与方法 · 物理学 2019-03-12 Nadejda Blagorodnova , Sergey E. Koposov , Łukasz Wyrzykowski , Mike Irwin , Nicholas A. Walton

This paper presents the first results from a new citizen science project: Galaxy Zoo Supernovae. This proof of concept project uses members of the public to identify supernova candidates from the latest generation of wide-field imaging…

The ability to discover new transients via image differencing without direct human intervention is an important task in observational astronomy. For these kind of image classification problems, machine Learning techniques such as…

天体物理仪器与方法 · 物理学 2022-09-09 Venkitesh Ayyar , Robert Knop , Autumn Awbrey , Alexis Andersen , Peter Nugent
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