Microlensing constraints on axion stars including finite lens and source size effects
Fujikura, K., Hertzberg, M. P., Schiappacasse, E. D., & Yamaguchi, M. (2021). Microlensing constraints on axion stars including finite lens and source size effects. Physical Review D, 104(12), Article 123012. https://doi.org/10.1103/PhysRevD.104.123012
Julkaistu sarjassa
Physical Review DPäivämäärä
2021Tekijänoikeudet
© 2021 American Physical Society
A fraction of light scalar dark matter, especially axions, may organize into Bose-Einstein condensates, gravitationally bound clumps, “boson stars”, and be present in large number in galactic halos today. We compute the expected number of gravitational microlensing events of clumps composed of the ordinary QCD axion and axionlike particles and derive microlensing constraints from the EROS-2 survey and the Subaru Hyper Suprime-Cam observation. We perform a detailed lensing calculation, including the finite lens and source size effects in our analysis. We constrain the axion mass in terms of the fraction of dark matter collapsed into clumps, the individual clump densities, and the axion self-coupling. We also consider and constrain clumps composed of a generic scalar dark matter candidate with repulsive self-interactions. Our analysis opens up a new window for the potential discovery of dark matter.
Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
2470-0010Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/103777778
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Suomen AkatemiaRahoitusohjelmat(t)
Akatemiahanke, SALisätietoja rahoituksesta
This work was supported by the Academy of Finland Grant No. 318319. K. F. is supported by JSPS Grant-in-Aid for Research Fellows Grant No. 20J12415. M. P. H. is supported in part by National Science Foundation Grant No. PHY-2013953. M. P. H. and M. Y. thank the JSPS invitation fellowship. M. Y. is supported in part by JSPS Grant-in-Aid for Scientific Research Grants No. JP18K18764, No. JP21H01080, and No. JP21H00069. ...Lisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Euclid preparation : XV. Forecasting cosmological constraints for the Euclid and CMB joint analysis
Euclid Collaboration (EDP Sciences, 2022)The combination and cross-correlation of the upcoming Euclid data with cosmic microwave background (CMB) measurements is a source of great expectation since it will provide the largest lever arm of epochs, ranging from ... -
Cosmological constraints on primordial black holes
Cangialosi, Antonino (2019)Primordial Black Holes (PBH) may have formed from collapse of high-density primordial fluctuations in the early Universe. Interest for PBH has been stirred anew by the LIGO detection of gravitational waves from massive ... -
The effect of natural habitat and human activities on large cat’s predation risk in a tropical landscape: including spatial and temporal scales in a two-dimensional approach
Lecuyer, Lou; Rousseu, Francois; Zou, Zhiwen; Rogan, John; Calme, Sophie (Open Science Centre, University of Jyväskylä, 2018)Livestock predation by large cats represents a threat both to livestock production and to large cat conservation when retaliation occurs. Therefore, understanding the factors that influence the occurrence of attacks and ... -
Effectiveness of Intervention Strategies to Increase Adolescents’ Physical Activity and Reduce Sedentary Time in Secondary School Settings, Including Factors Related to Implementation : A Systematic Review and Meta-Analysis
Contardo Ayala, Ana María; Parker, Kate; Mazzoli, Emiliano; Lander, Natalie; Ridgers, Nicola D.; Timperio, Anna; Lubans, David R.; Abbott, Gavin; Koorts, Harriet; Salmon, Jo (Springer, 2024)Background Globally, just one in five adolescents meet physical activity guidelines and three-quarters of the school day is spent sitting. It is unclear which types of school-based interventions strategies increase physical ... -
The 1-loop effective potential for the Standard Model in curved spacetime
Markkanen, Tommi; Nurmi, Sami; Rajantie, Arttu; Stopyra, Stephen (Springer, 2018)The renormalisation group improved Standard Model effective potential in an arbitrary curved spacetime is computed to one loop order in perturbation theory. The loop corrections are computed in the ultraviolet limit, which ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.