The Atacama Cosmology Telescope: Systematic Transient Search of 3-Day Maps
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| author | Li, Yaqiong Biermann, Emily Naess, Sigurd Aiola, Simone An, Rui Battaglia, Nicholas Bhandarkar, Tanay Calabrese, Erminia Choi, Steve K. Crowley, Kevin T. Devlin, Mark Duell, Cody J. Duff, Shannon M. Dunkley, Jo Dunner, Rolando Gallardo, Patricio A. Guan, Yilun Hervias-Caimapo, Carlos Hincks, Adam D. Hubmayr, Johannes Huffenberger, Kevin M. Hughes, John P. Kosowsky, Arthur Louis, Thibaut Mallaby-Kay, Maya McMahon, Jeff Nati, Federico Niemack, Michael D. Orlowski-Scherer, John Page, Lyman Sifon, Cristobal Salatino, Maria Staggs, Suzanne T. Vargas, Cristian Vavagiakis, Eve M. Wang, Yuhan Wollack, Edward J. |
| author_facet | Li, Yaqiong Biermann, Emily Naess, Sigurd Aiola, Simone An, Rui Battaglia, Nicholas Bhandarkar, Tanay Calabrese, Erminia Choi, Steve K. Crowley, Kevin T. Devlin, Mark Duell, Cody J. Duff, Shannon M. Dunkley, Jo Dunner, Rolando Gallardo, Patricio A. Guan, Yilun Hervias-Caimapo, Carlos Hincks, Adam D. Hubmayr, Johannes Huffenberger, Kevin M. Hughes, John P. Kosowsky, Arthur Louis, Thibaut Mallaby-Kay, Maya McMahon, Jeff Nati, Federico Niemack, Michael D. Orlowski-Scherer, John Page, Lyman Sifon, Cristobal Salatino, Maria Staggs, Suzanne T. Vargas, Cristian Vavagiakis, Eve M. Wang, Yuhan Wollack, Edward J. |
| contents | We conduct a systematic search for transients in three years of data (2017-2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40 percent of the sky at three bands spanning from 77 GHz to 277 GHz. Analysis of 3-day mean-subtracted sky maps, which were match-filtered for point sources, yielded 29 transients detections. Eight of these transients are due to known asteroids, and three others were previously published. Four of these events occur in areas of 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_04767 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The Atacama Cosmology Telescope: Systematic Transient Search of 3-Day Maps Li, Yaqiong Biermann, Emily Naess, Sigurd Aiola, Simone An, Rui Battaglia, Nicholas Bhandarkar, Tanay Calabrese, Erminia Choi, Steve K. Crowley, Kevin T. Devlin, Mark Duell, Cody J. Duff, Shannon M. Dunkley, Jo Dunner, Rolando Gallardo, Patricio A. Guan, Yilun Hervias-Caimapo, Carlos Hincks, Adam D. Hubmayr, Johannes Huffenberger, Kevin M. Hughes, John P. Kosowsky, Arthur Louis, Thibaut Mallaby-Kay, Maya McMahon, Jeff Nati, Federico Niemack, Michael D. Orlowski-Scherer, John Page, Lyman Sifon, Cristobal Salatino, Maria Staggs, Suzanne T. Vargas, Cristian Vavagiakis, Eve M. Wang, Yuhan Wollack, Edward J. Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics We conduct a systematic search for transients in three years of data (2017-2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40 percent of the sky at three bands spanning from 77 GHz to 277 GHz. Analysis of 3-day mean-subtracted sky maps, which were match-filtered for point sources, yielded 29 transients detections. Eight of these transients are due to known asteroids, and three others were previously published. Four of these events occur in areas of 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. |
| title | The Atacama Cosmology Telescope: Systematic Transient Search of 3-Day Maps |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2303.04767 |