The Atacama Cosmology Telescope: Detection of Millimeter-wave Transient Sources

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dc.contributor.authorNaess, Sigurd
dc.contributor.authorBattaglia, Nick
dc.contributor.authorBond, J. Richard
dc.contributor.authorCalabrese, Erminia
dc.contributor.authorChoi, Steve K.
dc.contributor.authorCothard, Nicholas F.
dc.contributor.authorDevlin, Mark
dc.contributor.authorDuell, Cody J.
dc.contributor.authorDuivenvoorden, Adriaan J.
dc.contributor.authorDunkley, Jo
dc.contributor.authorDunner, Rolando
dc.contributor.authorGallardo, Patricio A.
dc.contributor.authorGralla, Megan
dc.contributor.authorGuan, Yilun
dc.contributor.authorHalpern, Mark
dc.contributor.authorHill, J. Colin
dc.contributor.authorHilton, Matt
dc.contributor.authorHuffenberger, Kevin M.
dc.contributor.authorKoopman, Brian J.
dc.contributor.authorKosowsky, Arthur B.
dc.contributor.authorMadhavacheril, Mathew S.
dc.contributor.authorMcMahon, Jeff
dc.contributor.authorNati, Federico
dc.contributor.authorNiemack, Michael D.
dc.contributor.authorPage, Lyman
dc.contributor.authorPartridge, Bruce
dc.contributor.authorSalatino, Maria
dc.contributor.authorSehgal, Neelima
dc.contributor.authorSpergel, David
dc.contributor.authorStaggs, Suzanne
dc.contributor.authorWollack, Edward J.
dc.contributor.authorXu, Zhilei
dc.date.accessioned2025-01-20T22:16:42Z
dc.date.available2025-01-20T22:16:42Z
dc.date.issued2021
dc.description.abstractWe report on the serendipitous discovery of three transient millimeter-wave sources using data from the Atacama Cosmology Telescope. The first, detected at R.A. = 273.8138, decl. = -49.4628 at similar to 50 sigma total, brightened from less than 5 mJy to at least 1100 mJy at 150 GHz with an unknown rise time shorter than 13 days, during which the increase from 250 mJy to 1100 mJy took only 8 minutes. Maximum flux was observed on 2019 November 8. The source's spectral index in flux between 90-150 GHz was positive, alpha = 1.5 +/- 0.2. The second, detected at R.A. = 105.1584, decl. = -11.2434 at similar to 20 sigma total, brightened from less than 20 mJy to at least 300 mJy at 150 GHz with an unknown rise time shorter than 8 days. Maximum flux was observed on 2019 December 15. Its spectral index was also positive, alpha = 1.8 +/- 0.2. The third, detected at R.A. = 301.9952, decl. = 16.1652 at similar to 40 sigma total, brightened from less than 8 mJy to at least 300 mJy at 150 GHz over a day or less but decayed over a few days. Maximum flux was observed on 2018 September 11. Its spectrum was approximately flat, with a spectral index of alpha = -0.2 +/- 0.1. None of the sources were polarized to the limits of these measurements. The two rising-spectrum sources are coincident in position with M and K stars, while the third is coincident with a G star.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/abfe6d
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/abfe6d
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94535
dc.identifier.wosidWOS:000667936000001
dc.issue.numero1
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleThe Atacama Cosmology Telescope: Detection of Millimeter-wave Transient Sources
dc.typeartículo
dc.volumen915
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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