Bibliographic Details
| Title: |
The Atacama Cosmology Telescope: Systematic Transient Search of 3 Day Maps |
| Authors: |
Yaqiong Li, Emily Biermann, Sigurd Naess, Simone Aiola, Rui An, Nicholas Battaglia, Tanay Bhandarkar, Erminia Calabrese, Steve K. Choi, Kevin T. Crowley, Mark Devlin, Cody J. Duell, Shannon M. Duff, Jo Dunkley, Rolando Dünner, Patricio A. Gallardo, Yilun Guan, Carlos Hervías-Caimapo, Adam D. Hincks, Johannes Hubmayr, Kevin M. Huffenberger, John P. Hughes, Arthur Kosowsky, Thibaut Louis, Maya Mallaby-Kay, Jeff McMahon, Federico Nati, Michael D. Niemack, John Orlowski-Scherer, Lyman Page, Maria Salatino, Cristóbal Sifón, Suzanne T. Staggs, Cristian Vargas, Eve M. Vavagiakis, Yuhan Wang, Edward J. Wollack |
| Source: |
The Astrophysical Journal, Vol 956, Iss 1, p 36 (2023) |
| Publisher Information: |
IOP Publishing, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Astrophysics |
| Subject Terms: |
Transient sources, Stellar flares, Cosmic microwave background radiation, Asteroids, Astrophysics, QB460-466 |
| More Details: |
We conduct a systematic search for transients in 3 yr of data (2017–2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40% of the sky at three bands spanning from 77–277 GHz. Analysis of 3 day mean-subtracted sky maps, which were match filtered for point sources, yielded 29 transient detections. Eight of these transients are due to known asteroids, and three others were previously published. Four of these events occur in areas with poor noise models and thus we cannot be confident they are real transients. We are left with 14 new transient events occurring at 11 unique locations. All of these events are associated with either rotationally variable stars or cool stars. Ten events have flat or falling spectra indicating radiation from synchrotron emission. One event has a rising spectrum indicating a different engine for the flare. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1538-4357 |
| Relation: |
https://doaj.org/toc/1538-4357 |
| DOI: |
10.3847/1538-4357/ace599 |
| Access URL: |
https://doaj.org/article/a2e781c5873b415a9be57afa3b1860de |
| Accession Number: |
edsdoj.2e781c5873b415a9be57afa3b1860de |
| Database: |
Directory of Open Access Journals |
