Matches in SemOpenAlex for { <https://semopenalex.org/work/W2109355397> ?p ?o ?g. }
- W2109355397 endingPage "2444" @default.
- W2109355397 startingPage "2429" @default.
- W2109355397 abstract "We compute the number density of massive black holes (BHs) at the centre of galaxies at z= 6 in different dynamical dark energy (DDE) cosmologies, and compare it with existing observational lower limits, to derive constraints on the evolution of the dark energy equation of state parameter w. Our approach only assumes the canonical scenario for structure formation from the collapse of overdense regions of the dark-matter-dominated primordial density field on progressively larger scales; the BH accretion and merging rate have been maximized in the computation so as to obtain robust constraints on w and on its look-back time derivative wa. Our results provide independent constraints complementary to those obtained by combining supernovae, cosmic microwave background and baryonic acoustic oscillations, while the latter concern combinations of w0 and wa leaving the time evolution of the state parameter wa highly unconstrained, the BH abundance mainly provide upper limits on wa, only weakly depending on w0. Combined with the existing constraints, our results significantly restrict the allowed region in DDE parameter space, ruling out DDE models not providing cosmic time and fast growth factor large enough to allow for the building up of the observed abundance of BHs; in particular, models with −1.2 ≤w0≤−1 and positive redshift evolution wa≳ 0.8 – completely consistent with previous constraints – are strongly disfavoured by our independent constraints from BH abundance. Such range of parameters corresponds to ‘quintom’ DDE models, with w crossing −1 starting from larger values." @default.
- W2109355397 created "2016-06-24" @default.
- W2109355397 creator A5015298982 @default.
- W2109355397 creator A5051825718 @default.
- W2109355397 creator A5058237730 @default.
- W2109355397 creator A5068928403 @default.
- W2109355397 creator A5091734853 @default.
- W2109355397 date "2012-01-13" @default.
- W2109355397 modified "2023-10-16" @default.
- W2109355397 title "Constraining dynamical dark energy models through the abundance of high-redshift supermassive black holes" @default.
- W2109355397 cites W1537505738 @default.
- W2109355397 cites W1541040758 @default.
- W2109355397 cites W1546338243 @default.
- W2109355397 cites W1613124003 @default.
- W2109355397 cites W1619886093 @default.
- W2109355397 cites W1668994020 @default.
- W2109355397 cites W1821429365 @default.
- W2109355397 cites W1853767801 @default.
- W2109355397 cites W1964055719 @default.
- W2109355397 cites W1967039281 @default.
- W2109355397 cites W1967063442 @default.
- W2109355397 cites W1969054570 @default.
- W2109355397 cites W1970571200 @default.
- W2109355397 cites W1970820225 @default.
- W2109355397 cites W1973215726 @default.
- W2109355397 cites W1973368884 @default.
- W2109355397 cites W1974449889 @default.
- W2109355397 cites W1975627161 @default.
- W2109355397 cites W1978186191 @default.
- W2109355397 cites W1980238296 @default.
- W2109355397 cites W1982294980 @default.
- W2109355397 cites W1982496618 @default.
- W2109355397 cites W1983968449 @default.
- W2109355397 cites W1986264263 @default.
- W2109355397 cites W1987571841 @default.
- W2109355397 cites W1989563518 @default.
- W2109355397 cites W1992347118 @default.
- W2109355397 cites W1993839984 @default.
- W2109355397 cites W1994703407 @default.
- W2109355397 cites W1994968723 @default.
- W2109355397 cites W1997631586 @default.
- W2109355397 cites W1998245295 @default.
- W2109355397 cites W1998581888 @default.
- W2109355397 cites W1998773626 @default.
- W2109355397 cites W1999519547 @default.
- W2109355397 cites W2000903622 @default.
- W2109355397 cites W2002482748 @default.
- W2109355397 cites W2003182532 @default.
- W2109355397 cites W2003686608 @default.
- W2109355397 cites W2007111587 @default.
- W2109355397 cites W2010444039 @default.
- W2109355397 cites W2010920458 @default.
- W2109355397 cites W2014720123 @default.
- W2109355397 cites W2017452204 @default.
- W2109355397 cites W2017814476 @default.
- W2109355397 cites W2019103948 @default.
- W2109355397 cites W2023968025 @default.
- W2109355397 cites W2024128534 @default.
- W2109355397 cites W2030930867 @default.
- W2109355397 cites W2031278158 @default.
- W2109355397 cites W2032901690 @default.
- W2109355397 cites W2034616099 @default.
- W2109355397 cites W2035332984 @default.
- W2109355397 cites W2036319176 @default.
- W2109355397 cites W2037534205 @default.
- W2109355397 cites W2040912209 @default.
- W2109355397 cites W2046620005 @default.
- W2109355397 cites W2048502125 @default.
- W2109355397 cites W2049393017 @default.
- W2109355397 cites W2054026519 @default.
- W2109355397 cites W2056173066 @default.
- W2109355397 cites W2056264338 @default.
- W2109355397 cites W2057645607 @default.
- W2109355397 cites W2057676648 @default.
- W2109355397 cites W2060448616 @default.
- W2109355397 cites W2060593869 @default.
- W2109355397 cites W2060961770 @default.
- W2109355397 cites W2063786957 @default.
- W2109355397 cites W2064074968 @default.
- W2109355397 cites W2065943660 @default.
- W2109355397 cites W2069345898 @default.
- W2109355397 cites W2073468056 @default.
- W2109355397 cites W2073510197 @default.
- W2109355397 cites W2073832139 @default.
- W2109355397 cites W2074101920 @default.
- W2109355397 cites W2074119073 @default.
- W2109355397 cites W2079349557 @default.
- W2109355397 cites W2079900698 @default.
- W2109355397 cites W2083868640 @default.
- W2109355397 cites W2083870045 @default.
- W2109355397 cites W2086436511 @default.
- W2109355397 cites W2090459210 @default.
- W2109355397 cites W2092504858 @default.
- W2109355397 cites W2098564368 @default.
- W2109355397 cites W2102197207 @default.
- W2109355397 cites W2104127586 @default.
- W2109355397 cites W2106288445 @default.
- W2109355397 cites W2106766431 @default.