The Atacama cosmology telescope: flux upper limits from a targeted search for extragalactic transients

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dc.contributor.authorHervias-Caimapo, Carlos
dc.contributor.authorNaess, Sigurd
dc.contributor.authorHincks, Adam D.
dc.contributor.authorCalabrese, Erminia
dc.contributor.authorDevlin, Mark J.
dc.contributor.authorDunkley, Jo
dc.contributor.authorDuenner, Rolando
dc.contributor.authorGallardo, Patricio A.
dc.contributor.authorHilton, Matt
dc.contributor.authorHo, Anna Y. Q.
dc.contributor.authorHuffenberger, Kevin M.
dc.contributor.authorMa, Xiaoyi
dc.contributor.authorMadhavacheril, Mathew S.
dc.contributor.authorNiemack, Michael D.
dc.contributor.authorOrlowski-Scherer, John
dc.contributor.authorPage, Lyman A.
dc.contributor.authorPartridge, Bruce
dc.contributor.authorPuddu, Roberto
dc.contributor.authorSalatino, Maria
dc.contributor.authorSifon, Cristobal
dc.contributor.authorStaggs, Suzanne T.
dc.contributor.authorVargas, Cristian
dc.contributor.authorVavagiakis, Eve M.
dc.contributor.authorWollack, Edward J.
dc.date.accessioned2025-01-20T17:06:26Z
dc.date.available2025-01-20T17:06:26Z
dc.date.issued2024
dc.description.abstractWe have performed targeted searches of known extragalactic transient events at millimetre wavelengths using nine seasons (2013-2021) of 98, 150, and 229 GHz Atacama Cosmology Telescope (ACT) observations that mapped similar to 40 per cent of the sky for most of the data volume. Our data cover 88 gamma-ray bursts (GRBs), 12 tidal disruption events (TDEs), and 203 other transients, including supernovae (SNe). We stack our ACT observations to increase the signal-to-noise ratio of the maps. In all cases but one, we do not detect these transients in the ACT data. The single candidate detection (event AT2019ppm), seen at similar to 5 sigma significance in our data, appears to be due to active galactic nuclei activity in the host galaxy coincident with a transient alert. For each source in our search we provide flux upper limits. For example, the medians for the 95 per cent confidence upper limits at 98 GHz are 15, 18, and 16 mJy for GRBs, SNe, and TDEs, respectively, in the first month after discovery. The projected sensitivity of future wide-area cosmic microwave background surveys should be sufficient to detect many of these events using the methods described in this paper.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stae583
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stae583
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90783
dc.identifier.wosidWOS:001189423300004
dc.issue.numero3
dc.language.isoen
dc.pagina.final3034
dc.pagina.inicio3020
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectmethods: data analysis
dc.subjectcosmic background radiation
dc.subjecttransients: gamma-ray bursts
dc.subjecttransients: supernovae
dc.subjecttransients: tidal disruption events
dc.titleThe Atacama cosmology telescope: flux upper limits from a targeted search for extragalactic transients
dc.typeartículo
dc.volumen529
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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