{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T03:06:42Z","timestamp":1774667202195,"version":"3.50.1"},"reference-count":86,"publisher":"IOP Publishing","issue":"03","license":[{"start":{"date-parts":[[2018,3,26]],"date-time":"2018-03-26T00:00:00Z","timestamp":1522022400000},"content-version":"vor","delay-in-days":25,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[2018,3,26]],"date-time":"2018-03-26T00:00:00Z","timestamp":1522022400000},"content-version":"tdm","delay-in-days":25,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["J. Cosmol. Astropart. Phys."],"published-print":{"date-parts":[[2018,3,1]]},"abstract":"<jats:p>Ultralight bosons and axion-like particles appear naturally in different scenarios and could solve some long-standing puzzles. Their detection is challenging, and all direct methods hinge on unknown couplings to the Standard Model of particle physics. However, the universal coupling to gravity provides model-independent signatures for these fields. We explore here the superradiant instability of spinning black holes triggered in the presence of such fields. The instability taps angular momentum from and limits the maximum spin of astrophysical black holes. We compute, for the first time, the spectrum of the most unstable modes of a massive vector (Proca) field for generic black-hole spin and Proca mass. The observed stability of the inner disk of stellar-mass black holes can be used to derive<jats:italic>direct<\/jats:italic>constraints on the mass of dark photons in the mass range \u00a010<jats:sup>\u221213<\/jats:sup>\u00a0eV\u2272\u00a0<jats:italic>m<\/jats:italic><jats:sub><jats:italic>V<\/jats:italic><\/jats:sub>\u00a0\u2272\u00a03\u00d7\u00a010<jats:sup>\u221212<\/jats:sup>\u00a0eV. By including also higher azimuthal modes, similar constraints apply to axion-like particles in the mass range 6\u00d710<jats:sup>\u221213<\/jats:sup>\u00a0eV\u2272\u00a0<jats:italic>m<\/jats:italic><jats:sub>ALP<\/jats:sub>\u00a0\u2272\u00a010<jats:sup>\u221211<\/jats:sup>\u00a0eV. Likewise, mass and spin distributions of supermassive BHs\u2014as measured through continuum fitting, K\u03b1 iron line, or with the future space-based gravitational-wave detector LISA \u2013 imply indirect bounds in the mass range approximately 10<jats:sup>\u221219<\/jats:sup>\u00a0eV\u2272\u00a0<jats:italic>m<\/jats:italic><jats:sub><jats:italic>V<\/jats:italic><\/jats:sub>,\u00a0<jats:italic>m<\/jats:italic><jats:sub>ALP<\/jats:sub>\u00a0\u2272\u00a010<jats:sup>\u221213<\/jats:sup>\u00a0eV, for both axion-like particles and dark photons. Overall, superradiance allows to explore a region of approximately 8 orders of magnitude in the mass of ultralight bosons.<\/jats:p>","DOI":"10.1088\/1475-7516\/2018\/03\/043","type":"journal-article","created":{"date-parts":[[2018,3,26]],"date-time":"2018-03-26T15:14:14Z","timestamp":1522077254000},"page":"043-043","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":223,"title":["Constraining the mass of dark photons and axion-like particles through black-hole superradiance"],"prefix":"10.1088","volume":"2018","author":[{"given":"Vitor","family":"Cardoso","sequence":"first","affiliation":[]},{"given":"\u00d3scar J.C.","family":"Dias","sequence":"additional","affiliation":[]},{"given":"Gavin S.","family":"Hartnett","sequence":"additional","affiliation":[]},{"given":"Matthew","family":"Middleton","sequence":"additional","affiliation":[]},{"given":"Paolo","family":"Pani","sequence":"additional","affiliation":[]},{"given":"Jorge E.","family":"Santos","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2018,3,26]]},"reference":[{"key":"crKey-10.1088\/1475-7516\/2018\/03\/043-BIB1","doi-asserted-by":"publisher","first-page":"107","DOI":"10.1007\/978-3-319-02063-1_9","article-title":"A Review on the Scalar Field\/Bose-Einstein Condensate Dark Matter Model,","volume":"38","year":"2014","journal-title":"Astrophys. 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