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Extraterrestrial Ax...
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Foster, Joshua W.Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
(författare)
Extraterrestrial Axion Search with the Breakthrough Listen Galactic Center Survey
- Artikel/kapitelEngelska2022
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American Physical Society (APS),2022
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LIBRIS-ID:oai:DiVA.org:kth-323439
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-323439URI
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https://doi.org/10.1103/PhysRevLett.129.251102DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-214549URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20230130
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Axion dark matter (DM) may efficiently convert to photons in the magnetospheres of neutron stars (NSs), producing nearly monochromatic radio emission. This process is resonantly triggered when the plasma frequency induced by the underlying charge distribution approximately matches the axion mass. We search for evidence of this process using archival Green Bank Telescope data collected in a survey of the Galactic Center in the C band by the Breakthrough Listen project. While Breakthrough Listen aims to find signatures of extraterrestrial life in the radio band, we show that their high-frequency resolution spectral data of the Galactic Center region is ideal for searching for axion-photon transitions generated by the population of NSs in the inner pc of the Galaxy. We use data-driven models to capture the distributions and properties of NSs in the inner Galaxy and compute the expected radio flux from each NS using state-of-the-art ray tracing simulations. We find no evidence for axion DM and set leading constraints on the axion-photon coupling, excluding values down to the level ga gamma gamma similar to 10-11 GeV-1 for DM axions for masses between 15 and 35
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Witte, Samuel J.GRAPPA Institute, Institute for Theoretical Physics Amsterdam and Delta Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
(författare)
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Lawson, MatthewStockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, Dept Phys, S-10691 Stockholm, Sweden.,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Nordiska institutet för teoretisk fysik (Nordita)(Swepub:su)mala2765
(författare)
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Linden, TimStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),The Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, Alba Nova, 10691 Stockholm, Sweden(Swepub:su)tili2600
(författare)
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Gajjar, VishalDepartment of Astronomy, University of California Berkeley, Berkeley California 94720, USA
(författare)
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Weniger, ChristophGRAPPA Institute, Institute for Theoretical Physics Amsterdam and Delta Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
(författare)
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Safdi, Benjamin R.Berkeley Center for Theoretical Physics, University of California, Berkeley, California 94720, USA;Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
(författare)
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Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USAGRAPPA Institute, Institute for Theoretical Physics Amsterdam and Delta Institute for Theoretical Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Physical Review Letters: American Physical Society (APS)129:250031-90071079-7114
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