FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311886037> ?p ?o ?g. }

• W4311886037 abstract "If the principle of statistical isotropy is valid, then the angular power spectrum (APS) of cosmic microwave background (CMB) radiation is uncorrelated between different multipoles. We propose a novel technique to analyse any possible correlations of the foreground-cleaned CMB temperature APS measures ( $$C_{ell }$$ and $${mathcal {D}}_ell =({ell (ell +1)})/({2pi })C_ell $$ ). This is motivated by the behaviour of level spacings between random matrix eigenvalues. This method helps to distinguish uncorrelated statistically isotropic CMB APS from correlated APS, where the latter can arise due to breakdown of isotropy or presence of some residual systematics in the foreground cleaned CMB maps. Spacings of statistically isotropic CMB $$C_ell $$ ’s and $${mathcal {D}}_ell $$ ’s are seen to closely obey Poisson statistics and introduction of correlations, changes the distribution to appropriate Wigner–Dyson statistics. For foreground-cleaned CMB, we employ the average spacing of consecutive multipole APS for multipoles $$in [2,31]$$ . This estimator is sensitive to departures from the null hypothesis of zero correlations between the APS measures of statistically isotropic CMB. We study full sky WMAP 9-year ILC and 2018 Planck foreground-cleaned maps (Commander, NILC and SMICA). Sans parity distinctions, average spacings are in good agreement with theoretical expectation. With parity distinctions, even multipoles indicate unusually low average spacings for both $$C_ell $$ ’s (at $$ge $$ 98.86% C.L.) and $${mathcal {D}}_ell $$ ’s (at $${ge }$$ 95.07% C.L.). We use an inpainting method based on constrained Gaussian realisations and show that for the Planck U73 and WMAP KQ75 masks, all the foreground-cleaned inpainted CMB maps robustly confirm the existence of such unusually low average spacings of even multipole APS. In addition, this signal is independent of the non-Gaussian cold spot." @default.
• W4311886037 created "2023-01-02" @default.
• W4311886037 creator A5035452231 @default.
• W4311886037 creator A5046843389 @default.
• W4311886037 date "2022-12-19" @default.
• W4311886037 modified "2023-10-10" @default.
• W4311886037 title "Level correlations of CMB temperature angular power spectrum" @default.
• W4311886037 cites W1530988995 @default.
• W4311886037 cites W1931011441 @default.
• W4311886037 cites W1959743881 @default.
• W4311886037 cites W1963596092 @default.
• W4311886037 cites W1968384569 @default.
• W4311886037 cites W1974511160 @default.
• W4311886037 cites W1976579441 @default.
• W4311886037 cites W1978133167 @default.
• W4311886037 cites W1986264263 @default.
• W4311886037 cites W1989963731 @default.
• W4311886037 cites W1992137638 @default.
• W4311886037 cites W1992289660 @default.
• W4311886037 cites W1997116756 @default.
• W4311886037 cites W1997227985 @default.
• W4311886037 cites W1999621932 @default.
• W4311886037 cites W2003244816 @default.
• W4311886037 cites W2004344183 @default.
• W4311886037 cites W2009441000 @default.
• W4311886037 cites W2013101909 @default.
• W4311886037 cites W2018690672 @default.
• W4311886037 cites W2020482171 @default.
• W4311886037 cites W2023573336 @default.
• W4311886037 cites W2025177494 @default.
• W4311886037 cites W2037232212 @default.
• W4311886037 cites W2054881401 @default.
• W4311886037 cites W2058585360 @default.
• W4311886037 cites W2060244269 @default.
• W4311886037 cites W2062513114 @default.
• W4311886037 cites W2068448791 @default.
• W4311886037 cites W2071232376 @default.
• W4311886037 cites W2071315943 @default.
• W4311886037 cites W2073848376 @default.
• W4311886037 cites W2075884494 @default.
• W4311886037 cites W2082064932 @default.
• W4311886037 cites W2083531892 @default.
• W4311886037 cites W2089575508 @default.
• W4311886037 cites W2091953875 @default.
• W4311886037 cites W2092742037 @default.
• W4311886037 cites W2096545511 @default.
• W4311886037 cites W2102592906 @default.
• W4311886037 cites W2113941719 @default.
• W4311886037 cites W2119161761 @default.
• W4311886037 cites W2128088645 @default.
• W4311886037 cites W2128773267 @default.
• W4311886037 cites W2129442062 @default.
• W4311886037 cites W2130410830 @default.
• W4311886037 cites W2133753143 @default.
• W4311886037 cites W2133851551 @default.
• W4311886037 cites W2138660914 @default.
• W4311886037 cites W2140246802 @default.
• W4311886037 cites W2147875900 @default.
• W4311886037 cites W2164640814 @default.
• W4311886037 cites W2170603249 @default.
• W4311886037 cites W2758816215 @default.
• W4311886037 cites W2777083767 @default.
• W4311886037 cites W2783331639 @default.
• W4311886037 cites W2810967616 @default.
• W4311886037 cites W2950130697 @default.
• W4311886037 cites W2952212451 @default.
• W4311886037 cites W2963843710 @default.
• W4311886037 cites W3013455907 @default.
• W4311886037 cites W3039732204 @default.
• W4311886037 cites W3098480298 @default.
• W4311886037 cites W3099017181 @default.
• W4311886037 cites W3099150701 @default.
• W4311886037 cites W3099234116 @default.
• W4311886037 cites W3099683741 @default.
• W4311886037 cites W3100759766 @default.
• W4311886037 cites W3100955764 @default.
• W4311886037 cites W3101361466 @default.
• W4311886037 cites W3103067587 @default.
• W4311886037 cites W3103516905 @default.
• W4311886037 cites W3103963830 @default.
• W4311886037 cites W3104920628 @default.
• W4311886037 cites W3105130985 @default.
• W4311886037 cites W3109305835 @default.
• W4311886037 cites W3122299464 @default.
• W4311886037 cites W3124068758 @default.
• W4311886037 cites W3124418596 @default.
• W4311886037 cites W3125257073 @default.
• W4311886037 cites W3125940483 @default.
• W4311886037 cites W3173408712 @default.
• W4311886037 cites W3213373723 @default.
• W4311886037 cites W4256733034 @default.
• W4311886037 cites W4361867059 @default.
• W4311886037 doi "https://doi.org/10.1007/s12036-022-09893-w" @default.
• W4311886037 hasPublicationYear "2022" @default.
• W4311886037 type Work @default.
• W4311886037 citedByCount "2" @default.
• W4311886037 countsByYear W43118860372023 @default.
• W4311886037 crossrefType "journal-article" @default.
• W4311886037 hasAuthorship W4311886037A5035452231 @default.
• W4311886037 hasAuthorship W4311886037A5046843389 @default.

• next