Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G
International audience High angular resolution cosmic microwave background experiments provide a unique opportunity to conduct a survey of time-variable sources at millimeter wavelengths, a population that has primarily been understood through follow-up measurements of detections in other bands. Her...
Published in: | The Astrophysical Journal |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.science/hal-03178531 https://doi.org/10.3847/1538-4357/ac06a3 |
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ftunivnantes:oai:HAL:hal-03178531v1 2023-05-15T18:22:51+02:00 Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G Guns, S. Foster, A. Daley, C. Rahlin, A. Whitehorn, N. Ade, P.A. R. Ahmed, Z. Anderes, E. Anderson, A.J. Archipley, M. Avva, J.S. Aylor, K. Balkenhol, L. Barry, P.S. Thakur, R. Basu Benabed, K. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Bouchet, F.R. Bryant, L. Byrum, K. Carlstrom, J.E. Carter, F.W. Cecil, T.W. Chang, C.L. Chaubal, P. Chen, G. Cho, H.-M. Chou, T.-L. Cliche, J.-F. Crawford, T.M. Cukierman, A. de Haan, T. Denison, E.V. Dibert, K. Ding, J. Dobbs, M.A. Dutcher, D. Everett, W. Feng, C. Ferguson, K.R. Fu, J. Galli, S. Gambrel, A.E. Gardner, R.W. Goeckner-Wald, N. Gualtieri, R. Gupta, N. Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) SPT-3G 2021 https://hal.science/hal-03178531 https://doi.org/10.3847/1538-4357/ac06a3 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/2103.06166 info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac06a3 hal-03178531 https://hal.science/hal-03178531 ARXIV: 2103.06166 doi:10.3847/1538-4357/ac06a3 INSPIRE: 1850993 Astrophys.J. https://hal.science/hal-03178531 Astrophys.J., 2021, 916 (2), pp.98. ⟨10.3847/1538-4357/ac06a3⟩ [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.3847/1538-4357/ac06a3 2023-03-08T03:09:40Z International audience High angular resolution cosmic microwave background experiments provide a unique opportunity to conduct a survey of time-variable sources at millimeter wavelengths, a population that has primarily been understood through follow-up measurements of detections in other bands. Here we report the first results of an astronomical transient survey with the South Pole Telescope (SPT) using the SPT-3G camera to observe 1500 deg2 of the southern sky. The observations took place from 2020 March to November in three bands centered at 95, 150, and 220 GHz. This survey yielded the detection of 15 transient events from sources not previously detected by the SPT. The majority are associated with variable stars of different types, expanding the number of such detected flares by more than a factor of two. The stellar flares are unpolarized and bright, in some cases exceeding 1 Jy, and have durations from a few minutes to several hours. Another population of detected events last for 2–3 weeks and appear to be extragalactic in origin. Though data availability at other wavelengths is limited, we find evidence for concurrent optical activity for two of the stellar flares. Future data from SPT-3G and forthcoming instruments will provide real-time detection of millimeter-wave transients on timescales of minutes to months. Article in Journal/Newspaper South pole Université de Nantes: HAL-UNIV-NANTES South Pole The Astrophysical Journal 916 2 98 |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
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[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Guns, S. Foster, A. Daley, C. Rahlin, A. Whitehorn, N. Ade, P.A. R. Ahmed, Z. Anderes, E. Anderson, A.J. Archipley, M. Avva, J.S. Aylor, K. Balkenhol, L. Barry, P.S. Thakur, R. Basu Benabed, K. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Bouchet, F.R. Bryant, L. Byrum, K. Carlstrom, J.E. Carter, F.W. Cecil, T.W. Chang, C.L. Chaubal, P. Chen, G. Cho, H.-M. Chou, T.-L. Cliche, J.-F. Crawford, T.M. Cukierman, A. de Haan, T. Denison, E.V. Dibert, K. Ding, J. Dobbs, M.A. Dutcher, D. Everett, W. Feng, C. Ferguson, K.R. Fu, J. Galli, S. Gambrel, A.E. Gardner, R.W. Goeckner-Wald, N. Gualtieri, R. Gupta, N. Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
topic_facet |
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience High angular resolution cosmic microwave background experiments provide a unique opportunity to conduct a survey of time-variable sources at millimeter wavelengths, a population that has primarily been understood through follow-up measurements of detections in other bands. Here we report the first results of an astronomical transient survey with the South Pole Telescope (SPT) using the SPT-3G camera to observe 1500 deg2 of the southern sky. The observations took place from 2020 March to November in three bands centered at 95, 150, and 220 GHz. This survey yielded the detection of 15 transient events from sources not previously detected by the SPT. The majority are associated with variable stars of different types, expanding the number of such detected flares by more than a factor of two. The stellar flares are unpolarized and bright, in some cases exceeding 1 Jy, and have durations from a few minutes to several hours. Another population of detected events last for 2–3 weeks and appear to be extragalactic in origin. Though data availability at other wavelengths is limited, we find evidence for concurrent optical activity for two of the stellar flares. Future data from SPT-3G and forthcoming instruments will provide real-time detection of millimeter-wave transients on timescales of minutes to months. |
author2 |
Institut d'Astrophysique de Paris (IAP) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) SPT-3G |
format |
Article in Journal/Newspaper |
author |
Guns, S. Foster, A. Daley, C. Rahlin, A. Whitehorn, N. Ade, P.A. R. Ahmed, Z. Anderes, E. Anderson, A.J. Archipley, M. Avva, J.S. Aylor, K. Balkenhol, L. Barry, P.S. Thakur, R. Basu Benabed, K. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Bouchet, F.R. Bryant, L. Byrum, K. Carlstrom, J.E. Carter, F.W. Cecil, T.W. Chang, C.L. Chaubal, P. Chen, G. Cho, H.-M. Chou, T.-L. Cliche, J.-F. Crawford, T.M. Cukierman, A. de Haan, T. Denison, E.V. Dibert, K. Ding, J. Dobbs, M.A. Dutcher, D. Everett, W. Feng, C. Ferguson, K.R. Fu, J. Galli, S. Gambrel, A.E. Gardner, R.W. Goeckner-Wald, N. Gualtieri, R. Gupta, N. |
author_facet |
Guns, S. Foster, A. Daley, C. Rahlin, A. Whitehorn, N. Ade, P.A. R. Ahmed, Z. Anderes, E. Anderson, A.J. Archipley, M. Avva, J.S. Aylor, K. Balkenhol, L. Barry, P.S. Thakur, R. Basu Benabed, K. Bender, A.N. Benson, B.A. Bianchini, F. Bleem, L.E. Bouchet, F.R. Bryant, L. Byrum, K. Carlstrom, J.E. Carter, F.W. Cecil, T.W. Chang, C.L. Chaubal, P. Chen, G. Cho, H.-M. Chou, T.-L. Cliche, J.-F. Crawford, T.M. Cukierman, A. de Haan, T. Denison, E.V. Dibert, K. Ding, J. Dobbs, M.A. Dutcher, D. Everett, W. Feng, C. Ferguson, K.R. Fu, J. Galli, S. Gambrel, A.E. Gardner, R.W. Goeckner-Wald, N. Gualtieri, R. Gupta, N. |
author_sort |
Guns, S. |
title |
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
title_short |
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
title_full |
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
title_fullStr |
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
title_full_unstemmed |
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G |
title_sort |
detection of galactic and extragalactic millimeter-wavelength transient sources with spt-3g |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03178531 https://doi.org/10.3847/1538-4357/ac06a3 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Astrophys.J. https://hal.science/hal-03178531 Astrophys.J., 2021, 916 (2), pp.98. ⟨10.3847/1538-4357/ac06a3⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2103.06166 info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac06a3 hal-03178531 https://hal.science/hal-03178531 ARXIV: 2103.06166 doi:10.3847/1538-4357/ac06a3 INSPIRE: 1850993 |
op_doi |
https://doi.org/10.3847/1538-4357/ac06a3 |
container_title |
The Astrophysical Journal |
container_volume |
916 |
container_issue |
2 |
container_start_page |
98 |
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