The Atacama Cosmology Telescope: Systematic Transient Search of Single Observation Maps

Autor:	Biermann, Emily K., Li, Yaqiong, Naess, Sigurd, Choi, Steve K., Clark, Susan E., Devlin, Mark, Dunkley, Jo, Gallardo, P. A., Guan, Yilun, Foster, Allen, Hasselfield, Matthew, Hervías-Caimapo, Carlos, Hilton, Matt, Hincks, Adam D., Ho, Anna Y. Q., Hood II, John C., Huffenberger, Kevin M., Kosowsky, Arthur, Niemack, Michael D., Orlowski-Scherer, John, Page, Lyman, Partridge, Bruce, Salatino, Maria, Sifón, Cristóbal, Staggs, Suzanne T., Vargas, Cristian, Wollack, Edward J.
Rok vydání:	2024
Předmět:	Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Astrophysics of Galaxies Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 23 pages, 10 figures, 10 tables. First and second author share equal contributions. Article and accompanying data submitted to ApJ. Data tables will be made available upon publication
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2409.08429 Zobrazit plný text záznamu View this record from Arxiv