Matches in SemOpenAlex for { <https://semopenalex.org/work/W2598752668> ?p ?o ?g. }
- W2598752668 endingPage "1980" @default.
- W2598752668 startingPage "1972" @default.
- W2598752668 abstract "A striking signal of dark matter beyond the standard model is the existence of cores in the centre of galaxy clusters. Recent simulations predict that a Brightest Cluster Galaxy (BCG) inside a cored galaxy cluster will exhibit residual wobbling due to previous major mergers, long after the relaxation of the overall cluster. This phenomenon is absent with standard cold dark matter where a cuspy density profile keeps a BCG tightly bound at the centre. We test this hypothesis using cosmological simulations and deep observations of 10 galaxy clusters acting as strong gravitational lenses. Modelling the BCG wobble as a simple harmonic oscillator, we measure the wobble amplitude, $A_w$, in the BAHAMAS suite of cosmological hydrodynamical simulations, finding an upper limit for the CDM paradigm of $A_w < 2$kpc at the 95% confidence limit. We carry out the same test on the data finding a non-zero amplitude of $A_w=11.82^{+7.3}_{-3.0}$kpc, with the observations dis-favouring $A_w = 0$ at the 3$sigma$ confidence level. This detection of BCG wobbling is evidence for a dark matter core at the heart of galaxy clusters. It also shows that strong lensing models of clusters cannot assume that the BCG is exactly coincident with the large scale halo. While our small sample of galaxy clusters already indicates a non-zero $A_w$, with larger surveys, e.g. Euclid, we will be able to not only to confirm the effect but also to use it to determine whether or not the wobbling finds its origin in new fundamental physics or astrophysical process." @default.
- W2598752668 created "2017-04-07" @default.
- W2598752668 creator A5004193106 @default.
- W2598752668 creator A5016348656 @default.
- W2598752668 creator A5033973593 @default.
- W2598752668 creator A5065352702 @default.
- W2598752668 date "2017-08-14" @default.
- W2598752668 modified "2023-10-12" @default.
- W2598752668 title "A detection of wobbling brightest cluster galaxies within massive galaxy clusters" @default.
- W2598752668 cites W1501370474 @default.
- W2598752668 cites W1557358777 @default.
- W2598752668 cites W1748927467 @default.
- W2598752668 cites W1790097195 @default.
- W2598752668 cites W1965152548 @default.
- W2598752668 cites W1969043344 @default.
- W2598752668 cites W1971308472 @default.
- W2598752668 cites W1984261945 @default.
- W2598752668 cites W1991911062 @default.
- W2598752668 cites W1993246016 @default.
- W2598752668 cites W1994900330 @default.
- W2598752668 cites W2010220525 @default.
- W2598752668 cites W2010581546 @default.
- W2598752668 cites W2013967767 @default.
- W2598752668 cites W2018921091 @default.
- W2598752668 cites W2020884704 @default.
- W2598752668 cites W2027516123 @default.
- W2598752668 cites W2030357465 @default.
- W2598752668 cites W2032469582 @default.
- W2598752668 cites W2033486725 @default.
- W2598752668 cites W2037345068 @default.
- W2598752668 cites W2039304323 @default.
- W2598752668 cites W2041195793 @default.
- W2598752668 cites W2044035811 @default.
- W2598752668 cites W2051116120 @default.
- W2598752668 cites W2068725239 @default.
- W2598752668 cites W2078533011 @default.
- W2598752668 cites W2078963742 @default.
- W2598752668 cites W2083034637 @default.
- W2598752668 cites W2111396801 @default.
- W2598752668 cites W2119131940 @default.
- W2598752668 cites W2130580407 @default.
- W2598752668 cites W2131462302 @default.
- W2598752668 cites W2135645920 @default.
- W2598752668 cites W2138029281 @default.
- W2598752668 cites W2139031955 @default.
- W2598752668 cites W2141709306 @default.
- W2598752668 cites W2142238829 @default.
- W2598752668 cites W2150480596 @default.
- W2598752668 cites W2152797029 @default.
- W2598752668 cites W2156305595 @default.
- W2598752668 cites W2164261957 @default.
- W2598752668 cites W2166055163 @default.
- W2598752668 cites W2204815181 @default.
- W2598752668 cites W2272118023 @default.
- W2598752668 cites W2296455390 @default.
- W2598752668 cites W2428016607 @default.
- W2598752668 cites W2525497376 @default.
- W2598752668 cites W2535147333 @default.
- W2598752668 cites W3015417472 @default.
- W2598752668 cites W3098221464 @default.
- W2598752668 cites W3098853664 @default.
- W2598752668 cites W3099032708 @default.
- W2598752668 cites W3099934028 @default.
- W2598752668 cites W3100052653 @default.
- W2598752668 cites W3100110286 @default.
- W2598752668 cites W3100174474 @default.
- W2598752668 cites W3100196195 @default.
- W2598752668 cites W3100377699 @default.
- W2598752668 cites W3100785591 @default.
- W2598752668 cites W3101771129 @default.
- W2598752668 cites W3103359881 @default.
- W2598752668 cites W3104124239 @default.
- W2598752668 cites W3104186821 @default.
- W2598752668 cites W3104291077 @default.
- W2598752668 cites W3121230951 @default.
- W2598752668 cites W3123879657 @default.
- W2598752668 cites W3125216957 @default.
- W2598752668 cites W3125508083 @default.
- W2598752668 doi "https://doi.org/10.1093/mnras/stx2084" @default.
- W2598752668 hasPublicationYear "2017" @default.
- W2598752668 type Work @default.
- W2598752668 sameAs 2598752668 @default.
- W2598752668 citedByCount "28" @default.
- W2598752668 countsByYear W25987526682018 @default.
- W2598752668 countsByYear W25987526682019 @default.
- W2598752668 countsByYear W25987526682020 @default.
- W2598752668 countsByYear W25987526682021 @default.
- W2598752668 countsByYear W25987526682022 @default.
- W2598752668 countsByYear W25987526682023 @default.
- W2598752668 crossrefType "journal-article" @default.
- W2598752668 hasAuthorship W2598752668A5004193106 @default.
- W2598752668 hasAuthorship W2598752668A5016348656 @default.
- W2598752668 hasAuthorship W2598752668A5033973593 @default.
- W2598752668 hasAuthorship W2598752668A5065352702 @default.
- W2598752668 hasBestOaLocation W25987526682 @default.
- W2598752668 hasConcept C121332964 @default.
- W2598752668 hasConcept C127090403 @default.
- W2598752668 hasConcept C1276947 @default.