Kavli Affiliate: Susan E. Clark
| First 5 Authors: Emily K. Biermann, Yaqiong Li, Sigurd Naess, Steve K. Choi, Susan E. Clark
| Summary:
We conduct a systematic search for astrophysical transients using data from
the Atacama Cosmology Telescope (ACT). The data were taken from 2017 to 2022 in
three frequency bands spanning 77 GHz to 277 GHz. In this paper we present a
pipeline for transient detection using single observation maps where each pixel
of a map contains one observation with an integration time of approximately
four minutes. We find 34 transient events at 27 unique locations. All but two
of the transients are associated with Galactic stars and exhibit a wide range
of properties. We also detect an event coincident with the classical nova, YZ
Ret and one event consistent with a flaring active galactic nucleus. We notably
do not detect any reverse shock emission from gamma ray bursts, a non-detection
which is in tension with current models.
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