Flaires: A Comprehensive Catalog of Dust-Echo-like Infrared Flares
Jannis Necker, Eleni Graikou, Marek Kowalski, Anna, Franckowiak, Jakob Nordin, Teresa Pernice, Sjoert van Velzen and, Patrik M. Veres

TL;DR
This paper presents a large catalog of 823 dust-echo-like infrared flares from 40 million galaxies, enabling statistical analysis of their properties and rate evolution, which is consistent with tidal disruption events and extreme accretion phenomena.
Contribution
The authors compiled the largest and most complete infrared flare catalog to date, facilitating the first study of rate evolution with redshift for dust echos from transient accretion events.
Findings
Estimated dust properties for 568 flares.
Luminosity, extension, and temperature consistent with dust echos.
Rate decline observed with increasing redshift.
Abstract
Context: Observations of transient emission from extreme accretion events onto supermassive black holes can reveal conditions in the center of galaxies and the black hole itself. Most recently, they have been suggested to be emitters of high-energy neutrinos. If it is suddenly rejuvenated accretion or a tidal disruption event (TDE) is not clear in most cases. Aims: We expanded on existing samples of infrared flares to compile the largest and most complete list available. A large sample size is necessary to provide high enough statistics for far away and faint objects to estimate their rate. Our catalog is large enough to facilitate a preliminary study of the rate evolution with redshift for the first time. Methods: We compiled a sample of 40 million galaxies, and, using a custom, publicly available pipeline, analyzed the WISE light curves for these 40 million objects using the Bayesian…
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Spacecraft Design and Technology
