The Astrophysical Journal (Jan 2023)
The Atacama Cosmology Telescope: Systematic Transient Search of 3 Day Maps
- 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
Affiliations
- Yaqiong Li
- ORCiD
- Department of Physics, Cornell University , Ithaca, NY 14853, USA; Kavli Institute at Cornell for Nanoscale Science, Cornell University , Ithaca, NY 14853, USA
- Emily Biermann
- ORCiD
- Department of Physics and Astronomy, University of Pittsburgh , Pittsburgh, PA, 15213, USA
- Sigurd Naess
- ORCiD
- Institute of Theoretical Astrophysics, University of Oslo , Oslo, Norway
- Simone Aiola
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 5th Avenue, New York, NY 10010 USA
- Rui An
- Department of Physics and Astronomy, University of Southern California , Los Angeles, CA 90089, USA
- Nicholas Battaglia
- ORCiD
- Department of Astronomy, Cornell University , Ithaca, NY 14853, USA
- Tanay Bhandarkar
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , 209 S. 33rd Street, Philadelphia, PA 19104, USA
- Erminia Calabrese
- ORCiD
- School of Physics and Astronomy, Cardiff University , The Parade, Cardiff, Wales CF24 3AA, UK
- Steve K. Choi
- ORCiD
- Department of Physics, Cornell University , Ithaca, NY 14853, USA; Department of Astronomy, Cornell University , Ithaca, NY 14853, USA
- Kevin T. Crowley
- ORCiD
- Center for Astrophysics and Space Studies; University of California , San Diego, SERF Building Room 333; 9500 Gilman Drive, La Jolla, CA 92093-4204, USA
- Mark Devlin
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , 209 S. 33rd Street, Philadelphia, PA 19104, USA
- Cody J. Duell
- ORCiD
- Department of Physics, Cornell University , Ithaca, NY 14853, USA
- Shannon M. Duff
- ORCiD
- National Institute of Standards and Technology , Quantum Sensors Group, 325 Broadway, Boulder, CO 80305, USA
- Jo Dunkley
- ORCiD
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University , Princeton, NJ 08544, USA; Department of Astrophysical Sciences, Peyton Hall, Princeton University , Princeton, NJ 08544 USA
- Rolando Dünner
- ORCiD
- Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
- Patricio A. Gallardo
- ORCiD
- Kavli Institute for Cosmological Physics, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USA
- Yilun Guan
- ORCiD
- David A. Dunlap Department of Astronomy &Astrophysics, University of Toronto , 50 St. George Street, Toronto ON M5S 3H4, Canada
- Carlos Hervías-Caimapo
- ORCiD
- Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
- Adam D. Hincks
- ORCiD
- David A. Dunlap Department of Astronomy &Astrophysics, University of Toronto , 50 St. George Street, Toronto ON M5S 3H4, Canada; Specola Vaticana (Vatican Observatory) , V-00120 Vatican City State, Rome, Italy
- Johannes Hubmayr
- ORCiD
- National Institute of Standards and Technology , Quantum Sensors Group, 325 Broadway, Boulder, CO 80305, USA
- Kevin M. Huffenberger
- ORCiD
- Department of Physics, Florida State University , Tallahassee, FL 32306, USA
- John P. Hughes
- ORCiD
- Department of Physics and Astronomy, Rutgers University , 136 Frelinghuysen Road, Piscataway, NJ 08854, USA
- Arthur Kosowsky
- ORCiD
- Department of Physics and Astronomy, University of Pittsburgh , Pittsburgh, PA, 15213, USA
- Thibaut Louis
- ORCiD
- Université Paris-Saclay , CNRS/IN2P3, IJCLab, F-91405 Orsay, France
- Maya Mallaby-Kay
- ORCiD
- Department of Astronomy and Astrophysics, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USA
- Jeff McMahon
- ORCiD
- Kavli Institute for Cosmological Physics, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USA; Department of Astronomy and Astrophysics, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USA; Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, IL 60637, USA; Enrico Fermi Institute, University of Chicago , 5640 S. Ellis Avenue, Chicago, IL 60637, USA; Fermi National Accelerator Laboratory , Batavia, IL 60637, USA
- Federico Nati
- ORCiD
- University of Milano-Bicocca , Milan, Italy
- Michael D. Niemack
- ORCiD
- Department of Physics, Cornell University , Ithaca, NY 14853, USA; Department of Astronomy, Cornell University , Ithaca, NY 14853, USA
- John Orlowski-Scherer
- ORCiD
- Department of Physics, McGill University , 3600 University Street, Montreal, QC, H3A 2T8, Canada
- Lyman Page
- ORCiD
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University , Princeton, NJ 08544, USA
- Maria Salatino
- ORCiD
- Stanford University , Stanford, CA 94305, USA; Kavli Institute for Astroparticle Physics and Cosmology (KIPAC) , Stanford, CA 94305, USA
- Cristóbal Sifón
- ORCiD
- Instituto de Física, Pontificia Universidad Católica de Valparaíso , Casilla 4059, Valparaíso, Chile
- Suzanne T. Staggs
- ORCiD
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University , Princeton, NJ 08544, USA
- Cristian Vargas
- ORCiD
- Instituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Física, Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
- Eve M. Vavagiakis
- ORCiD
- Department of Physics, Cornell University , Ithaca, NY 14853, USA
- Yuhan Wang
- ORCiD
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University , Princeton, NJ 08544, USA
- Edward J. Wollack
- ORCiD
- NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
- DOI
- https://doi.org/10.3847/1538-4357/ace599
- Journal volume & issue
-
Vol. 956,
no. 1
p. 36
Abstract
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.
Keywords
