Fink, a new generation of broker for the LSST community

Abstract

Fink is a broker designed to enable science with large time-domain alert streams such as the one from the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). It exhibits traditional astronomy broker features such as automatised ingestion, annotation, selection and redistribution of promising alerts for transient science. It is also designed to go beyond traditional broker features by providing real-time transient classification which is continuously improved by using state-of-the-art Deep Learning and Adaptive Learning techniques. These evolving added values will enable more accurate scientific output from LSST photometric data for diverse science cases while also leading to a higher incidence of new discoveries which shall accompany the evolution of the survey. In this paper we introduce Fink, its science motivation, architecture and current status including first science verification cases using the Zwicky Transient Facility alert stream.

accepted in MNRAS

References in corpus (18)

• The NumPy array: a structure for efficient numerical computation
• The Gaia mission
• Multi-messenger Observations of a Binary Neutron Star Merger
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• Observation of inverse Compton emission from a long $\gamma$-ray burst
• The Automatic Learning for the Rapid Classification of Events (ALeRCE) Alert Broker
• The Zwicky Transient Facility Alert Distribution System
• Machine Learning for the Zwicky Transient Facility
• A Morphological Classification Model to Identify Unresolved PanSTARRS1 Sources: Application in the ZTF Real-Time Pipeline
• The Deep and Transient Universe in the SVOM Era: New Challenges and Opportunities - Scientific prospects of the SVOM mission
• The High Cadence Transient Survey (HiTS) - I. Survey design and supernova shock breakout constraints
• Unveiling the population of orphan Gamma Ray Bursts
• Incorporating Feedback into Tree-based Anomaly Detection
• A Machine Learning Classifier for Microlensing in Wide-Field Surveys
• AXS: A framework for fast astronomical data processing based on Apache Spark
• Gravitational microlensing events from the first year of the northern Galactic plane survey by the Zwicky Transient Facility
• Tidal disruption events from a nuclear star cluster as possible origin of transient relativistic spectral lines near SMBH

Cited by in corpus (56)

• The Automatic Learning for the Rapid Classification of Events (ALeRCE) Alert Broker
• A data science platform to enable time-domain astronomy
• Applications and Techniques for Fast Machine Learning in Science
• The ANTARES Astronomical Time-Domain Event Broker
• Anomaly detection in the Zwicky Transient Facility DR3
• Redback: A Bayesian inference software package for electromagnetic transients
• The Blazar sequence and its Physical Understanding
• YSE-PZ: A Transient Survey Management Platform that Empowers the Human-in-the-Loop
• The Young Supernova Experiment Data Release 1 (YSE DR1): Light Curves and Photometric Classification of 1975 Supernovae
• The Dark Energy Survey 5-year photometrically identified Type Ia Supernovae
• The ZTF Source Classification Project: I. Methods and Infrastructure
• The SNAD Viewer: Everything You Want to Know about Your Favorite ZTF Object
• Fink: early supernovae Ia classification using active learning
• Light curve classification with recurrent neural networks for GOTO: dealing with imbalanced data
• Combined spin orientation and phase function of asteroids
• Inferencing Progenitor and Explosion Properties of Evolving Core-collapse Supernovae from Zwicky Transient Facility Light Curves
• Persistent and occasional: searching for the variable population of the ZTF/4MOST sky using ZTF data release 11
• Astro-COLIBRI -- The COincidence LIBrary for Real-time Inquiry for multimessenger astrophysics
• ATAT: Astronomical Transformer for time series And Tabular data
• GRANDMA Observations of ZTF/Fink Transients during Summer 2021
• Linking Extragalactic Transients and their Host Galaxy Properties: Transient Sample, Multi-Wavelength Host Identification, and Database Construction
• Supernova Siblings and their Parent Galaxies in the Zwicky Transient Facility Bright Transient Surve
• Enabling the discovery of fast transients: A kilonova science module for the Fink broker
• TiDES: The 4MOST Time Domain Extragalactic Survey
• HEALPix Alchemy: Fast All-Sky Geometry and Image Arithmetic in a Relational Database for Multimessenger Astronomy Brokers
• Deep Drilling in the Time Domain with DECam: Survey Characterization
• DELIGHT: Deep Learning Identification of Galaxy Hosts of Transients using Multi-resolution Images
• Transient Classifiers for Fink: Benchmarks for LSST
• SNAD Transient Miner: Finding Missed Transient Events in ZTF DR4 using k-D trees
• Understanding of the properties of neural network approaches for transient light curve approximations
• SAGUARO: Time-domain Infrastructure for the Fourth Gravitational-wave Observing Run and Beyond
• Enabling discovery of solar system objects in large alert data streams
• 60 Microlensing Events from the Three Years of Zwicky Transient Facility Phase One
• Astro-COLIBRI 2 -- an advanced platform for real-time multi-messenger discoveries
• The Discovery and Evolution of a Possible New Epoch of Cometary Activity by the Centaur (2060) Chiron
• Early Identification of Optical Tidal Disruption Events: A science module for the Fink broker
• ELEPHANT: ExtragaLactic alErt Pipeline for Hostless AstroNomical Transients
• Multi-scale stamps for real-time classification of alert streams
• A Morphological Classification Model to Identify Unresolved PanSTARRS1 Sources II: Update to the PS1 Point Source Catalog
• Real-Time Active Learning for optimised spectroscopic follow-up: Enhancing early SN Ia classification with the Fink broker
• The ATLAS Virtual Research Assistant
• A Broker Integrated Algorithm for Gravitational Wave - Electromagnetic Counterpart Searches in O4a and O4b Runs
• The automation of optical transient discovery and classification in Rubin-era time-domain astronomy
• Machine-directed gravitational-wave counterpart discovery
• AT2021uey: A planetary microlensing event outside the Galactic bulge
• RADAR-Radio Afterglow Detection and AI-driven Response: A Federated Framework for Gravitational Wave Event Follow-Up
• Contaminating Electromagnetic Transients in LISA Gravitational Wave Localization Volumes. I: The Intrinsic Rates
• Comparison of Graphcore IPUs and Nvidia GPUsfor cosmology applications
• The Solar System Notification Alert Processing System (SNAPS): Asteroid Population Outlier Detection
• Large Language Model-driven Analysis of General Coordinates Network (GCN) Circulars
• EROS light curve data base
• LStein: A new approach to visualizing sparse 2.5-dimensional data
• Encapsulating Textual Contents into a MOC data Structure for Advanced Applications
• Finding Fast Transients in Real Time Using Novel Light Curve Analysis Algorithm
• Scaling pair count to next galaxy surveys
• TransientVerse: A Comprehensive Real-Time Alert and Multi-Wavelength Analysis System for Transient Astronomical Events