Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G
Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between Λ CDM predictions and cosmological observations. Axion-photon coupling induces a polarization rotation in linearly polarized photons traveling through a...
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:156650 2023-05-15T18:22:49+02:00 Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G Ferguson, R. K. SPT-3G Collaboration Tucker, Carole 2022-08-29 https://orca.cardiff.ac.uk/id/eprint/156650/ https://doi.org/10.1103/PhysRevD.106.042011 unknown Ferguson, R. K., SPT-3G Collaboration and Tucker, Carole https://orca.cardiff.ac.uk/view/cardiffauthors/A016987K.html orcid:0000-0002-1851-3918 orcid:0000-0002-1851-3918 2022. Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G. Physical Review D 106 , 042011. 10.1103/PhysRevD.106.042011 https://doi.org/10.1103/PhysRevD.106.042011 doi:10.1103/PhysRevD.106.042011 Article PeerReviewed 2022 ftunivcardiff https://doi.org/10.1103/PhysRevD.106.042011 2023-02-16T23:33:43Z Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between Λ CDM predictions and cosmological observations. Axion-photon coupling induces a polarization rotation in linearly polarized photons traveling through an ALP field; thus, as the local ALP dark matter field oscillates in time, distant static polarized sources will appear to oscillate with a frequency proportional to the ALP mass. We use observations of the cosmic microwave background from SPT-3G, the current receiver on the South Pole Telescope, to set upper limits on the value of the axion-photon coupling constant g ϕ γ over the approximate mass range 10 -22 - 10 -19 eV , corresponding to oscillation periods from 12 hours to 100 days. For periods between 1 and 100 days (4.7 ×10 -22 eV ≤m ϕ ≤4.7 ×10 -20 eV ), where the limit is approximately constant, we set a median 95% C.L. upper limit on the amplitude of on-sky polarization rotation of 0.071 deg. Assuming that dark matter comprises a single ALP species with a local dark matter density of 0.3 GeV /cm 3 , this corresponds to g ϕ γ <1.18 ×10 -12 GeV -1 ×(m/ ϕ 1.0 ×10 -21 eV ) . These new limits represent an improvement over the previous strongest limits set using the same effect by a factor of ∼3.8 . Article in Journal/Newspaper South pole Cardiff University: ORCA (Online Research @ Cardiff) South Pole Physical Review D 106 4 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between Λ CDM predictions and cosmological observations. Axion-photon coupling induces a polarization rotation in linearly polarized photons traveling through an ALP field; thus, as the local ALP dark matter field oscillates in time, distant static polarized sources will appear to oscillate with a frequency proportional to the ALP mass. We use observations of the cosmic microwave background from SPT-3G, the current receiver on the South Pole Telescope, to set upper limits on the value of the axion-photon coupling constant g ϕ γ over the approximate mass range 10 -22 - 10 -19 eV , corresponding to oscillation periods from 12 hours to 100 days. For periods between 1 and 100 days (4.7 ×10 -22 eV ≤m ϕ ≤4.7 ×10 -20 eV ), where the limit is approximately constant, we set a median 95% C.L. upper limit on the amplitude of on-sky polarization rotation of 0.071 deg. Assuming that dark matter comprises a single ALP species with a local dark matter density of 0.3 GeV /cm 3 , this corresponds to g ϕ γ <1.18 ×10 -12 GeV -1 ×(m/ ϕ 1.0 ×10 -21 eV ) . These new limits represent an improvement over the previous strongest limits set using the same effect by a factor of ∼3.8 . |
format |
Article in Journal/Newspaper |
author |
Ferguson, R. K. SPT-3G Collaboration Tucker, Carole |
spellingShingle |
Ferguson, R. K. SPT-3G Collaboration Tucker, Carole Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
author_facet |
Ferguson, R. K. SPT-3G Collaboration Tucker, Carole |
author_sort |
Ferguson, R. K. |
title |
Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
title_short |
Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
title_full |
Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
title_fullStr |
Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
title_full_unstemmed |
Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G |
title_sort |
searching for axionlike time-dependent cosmic birefringence with data from spt-3g |
publishDate |
2022 |
url |
https://orca.cardiff.ac.uk/id/eprint/156650/ https://doi.org/10.1103/PhysRevD.106.042011 |
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South Pole |
geographic_facet |
South Pole |
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South pole |
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South pole |
op_relation |
Ferguson, R. K., SPT-3G Collaboration and Tucker, Carole https://orca.cardiff.ac.uk/view/cardiffauthors/A016987K.html orcid:0000-0002-1851-3918 orcid:0000-0002-1851-3918 2022. Searching for axionlike time-dependent cosmic birefringence with data from SPT-3G. Physical Review D 106 , 042011. 10.1103/PhysRevD.106.042011 https://doi.org/10.1103/PhysRevD.106.042011 doi:10.1103/PhysRevD.106.042011 |
op_doi |
https://doi.org/10.1103/PhysRevD.106.042011 |
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Physical Review D |
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106 |
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4 |
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1766202239457689600 |