Velocity dispersion profiles of dwarf spheroidal galaxies with self-interacting ultralight dark matter

Korshynska, Kateryna; Gorbar, E. V.; Bidasyuk, Y. M.; Yakimenko, A. I.; Revaz, Y.

doi:https://doi.org/10.1103/7fp7-klxf

Zugriffsnummer	55641
Dokumenttyp	Zeitschriftenartikel
Peer Review	mit Peer Review
Sprache	Englisch
Titel	Velocity dispersion profiles of dwarf spheroidal galaxies with self-interacting ultralight dark matter
Autor(in); Institution	Korshynska, Kateryna; FPM, Fundamentale Physik für Metrologie, PTB-Braunschweig; Technische Universität Braunschweig, Institut für Mathematische Physik, Braunschweig, GERMANY; Taras Shevchenko National University of Kyiv, Department of Physics, Kyiv, UKRAINE Gorbar, E. V.; Taras Shevchenko National University of Kyiv, Department of Physics, Kyiv, UKRAINE; Bogolyubov Institute for Theoretical Physics, Kyiv, UKRAINE Bidasyuk, Y. M.; Bogolyubov Institute for Theoretical Physics, Kyiv, UKRAINE Yakimenko, A. I.; Taras Shevchenko National University of Kyiv, Department of Physics, Kyiv, UKRAINE; Universitá di Padova, Dipartimento die Fisica e Astronomia "Galileo Galilei", Padova, ITALY Revaz, Y.; Laboratoire d’Astrophysique, EPFL, Observatoire de Sauverny, Versoix, SWITZERLAND
Quelle/Jahr	Physical Review D:(2026), 113, 1 - 11
Artikelnummer	063006
ISSN	2470-0010 ; 2470-0029
DOI	https://doi.org/10.1103/7fp7-klxf
Verlag	Ridge, NY: Amercian Physical Society (APS)
Freie Schlagworte	Particle dark matter ; Massice compact halo objects ; Gravitation
Zusammenfassung	Dark-matter-dominated dwarf galaxies provide an excellent laboratory for testing dark matter models at small scale and, in particular, the ultralight dark matter (ULDM) class of models. Within the framework of self-interacting bosonic dark matter, we use the observed velocity-dispersion profiles of seven dwarf spheroidal galaxies to constrain the parameters of ULDM. In our modeling, we account for the impact of the baryonic component on the velocity dispersion and ULDM halo structure. We find that the repulsive self-interaction of ULDM, which fits the observations, is almost negligible, consistent with noninteracting ULDM with a boson mass of approximately 1.6 ×10⁻²² eV. In contrast, for attractively interacting ULDM, the best fit corresponds to a smaller boson mass of about 1.3 ×10⁻²² eV, with self-interaction playing a significant role in shaping the dark-matter halo and thereby influencing the interpretation of observations.

Kostenfreier Zugang	Open Access Hybrid
Rechteinformation	CC BY 4.0 ; Creative Commons Attribution 4.0 License

Themenbereich der Metrologie	Zeit und Frequenz
Innovationscluster	Quantentechnologie
Geschäftsfelder	Grundlagen der Metrologie
Förderinformationen (1)	Förderername: Swiss National Science Foundation Titel der Förderung: Joint research project: Cosmic waltz of baryonic and ultralight dark matter: interaction and dynamical interplay Förderungsnummer: IZURZ2_224972
Förderinformationen (2)	Förderername: Deutsche Forschungsgemeinschaft (DFG) Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: EXC 2123 Titel der Förderung: EXC-2123: Quantum Frontiers Förderungsnummer: 390837967

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Korshynska, K., Gorbar, E. V., Bidasyuk, Y. M., Yakimenko, A. I., & Revaz, Y. (2026). Velocity dispersion profiles of dwarf spheroidal galaxies with self-interacting ultralight dark matter. Physical Review D, 1–11. https://doi.org/10.1103/7fp7-klxf

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