FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1850897154> ?p ?o ?g. }

• W1850897154 endingPage "014" @default.
• W1850897154 startingPage "014" @default.
• W1850897154 abstract "The remarkable progress in cosmic microwave background (CMB) studies over past decade has led to the era of precision cosmology in striking agreement with the ΛCDM model. However, the lack of power in the CMB temperature anisotropies at large angular scales (low-ℓ), as has been confirmed by the recent Planck data also (up to 0ℓ=4), although statistically not very strong (less than 3σ), is still an open problem. One can avoid to seek an explanation for this problem by attributing the lack of power to cosmic variance or can look for explanations i.e., different inflationary potentials or initial conditions for inflation to begin with, non-trivial topology, ISW effect etc. Features in the primordial power spectrum (PPS) motivated by the early universe physics has been the most common solution to address this problem. In the present work we also follow this approach and consider a set of PPS which have features and constrain the parameters of those using WMAP 9 year and Planck data employing Markov-Chain Monte Carlo (MCMC) analysis. The prominent feature of all the models of PPS that we consider is an infra-red cut off which leads to suppression of power at large angular scales. We consider models of PPS with maximum three extra parameters and use Akaike information criterion (AIC) and Bayesian information criterion (BIC) of model selection to compare the models. For most models, we find good constraints for the cut off scale kc, however, for other parameters our constraints are not that good. We find that sharp cut off model gives best likelihood value for the WMAP 9 year data, but is as good as power law model according to AIC. For the joint WMAP 9 + Planck data set, Starobinsky model is slightly preferred by AIC which is also able to produce CMB power suppression up to 0ℓ⩽3 to some extent. However, using BIC criteria, one finds model(s) with least number of parameters (power law model) are always preferred." @default.
• W1850897154 created "2016-06-24" @default.
• W1850897154 creator A5010504178 @default.
• W1850897154 creator A5014940227 @default.
• W1850897154 creator A5067229262 @default.
• W1850897154 creator A5068745536 @default.
• W1850897154 date "2015-06-08" @default.
• W1850897154 modified "2023-09-27" @default.
• W1850897154 title "Joint Planck and WMAP assessment of low CMB multipoles" @default.
• W1850897154 cites W1742136395 @default.
• W1850897154 cites W1845548193 @default.
• W1850897154 cites W1944901286 @default.
• W1850897154 cites W1964479029 @default.
• W1850897154 cites W1966915434 @default.
• W1850897154 cites W1972639447 @default.
• W1850897154 cites W1978364516 @default.
• W1850897154 cites W1985838205 @default.
• W1850897154 cites W1987010236 @default.
• W1850897154 cites W1990217618 @default.
• W1850897154 cites W1992849634 @default.
• W1850897154 cites W1997363527 @default.
• W1850897154 cites W2000849410 @default.
• W1850897154 cites W2002709192 @default.
• W1850897154 cites W2004224441 @default.
• W1850897154 cites W2005543325 @default.
• W1850897154 cites W2007683600 @default.
• W1850897154 cites W2012385453 @default.
• W1850897154 cites W2016057472 @default.
• W1850897154 cites W2022372593 @default.
• W1850897154 cites W2029616627 @default.
• W1850897154 cites W2033663826 @default.
• W1850897154 cites W2035784745 @default.
• W1850897154 cites W2036269757 @default.
• W1850897154 cites W2044436114 @default.
• W1850897154 cites W2045377202 @default.
• W1850897154 cites W2045503696 @default.
• W1850897154 cites W2050975681 @default.
• W1850897154 cites W2051142510 @default.
• W1850897154 cites W2052650966 @default.
• W1850897154 cites W2059699043 @default.
• W1850897154 cites W2060897314 @default.
• W1850897154 cites W2064336450 @default.
• W1850897154 cites W2064547884 @default.
• W1850897154 cites W2067502036 @default.
• W1850897154 cites W2068228545 @default.
• W1850897154 cites W2075509634 @default.
• W1850897154 cites W2076224169 @default.
• W1850897154 cites W2077314885 @default.
• W1850897154 cites W2077706739 @default.
• W1850897154 cites W2078399513 @default.
• W1850897154 cites W2080189336 @default.
• W1850897154 cites W2082286321 @default.
• W1850897154 cites W2084034882 @default.
• W1850897154 cites W2084340898 @default.
• W1850897154 cites W2091631731 @default.
• W1850897154 cites W2092742037 @default.
• W1850897154 cites W2095368814 @default.
• W1850897154 cites W2100272953 @default.
• W1850897154 cites W2102718159 @default.
• W1850897154 cites W2109213529 @default.
• W1850897154 cites W2111420418 @default.
• W1850897154 cites W2122531913 @default.
• W1850897154 cites W2123070630 @default.
• W1850897154 cites W2123864481 @default.
• W1850897154 cites W2125798770 @default.
• W1850897154 cites W2134251287 @default.
• W1850897154 cites W2139937287 @default.
• W1850897154 cites W2142635246 @default.
• W1850897154 cites W2149553431 @default.
• W1850897154 cites W2152932445 @default.
• W1850897154 cites W2155678178 @default.
• W1850897154 cites W2164459358 @default.
• W1850897154 cites W2168175751 @default.
• W1850897154 cites W2168949285 @default.
• W1850897154 cites W2760819740 @default.
• W1850897154 cites W2949769649 @default.
• W1850897154 cites W2986218762 @default.
• W1850897154 cites W3098507591 @default.
• W1850897154 cites W3098654960 @default.
• W1850897154 cites W3100099610 @default.
• W1850897154 cites W3100514957 @default.
• W1850897154 cites W3100537878 @default.
• W1850897154 cites W3101168271 @default.
• W1850897154 cites W3103139355 @default.
• W1850897154 cites W3103207590 @default.
• W1850897154 cites W3103444847 @default.
• W1850897154 cites W3104221971 @default.
• W1850897154 cites W3105565803 @default.
• W1850897154 cites W3106449272 @default.
• W1850897154 cites W3121551658 @default.
• W1850897154 cites W3123142561 @default.
• W1850897154 cites W3123796127 @default.
• W1850897154 cites W4205715914 @default.
• W1850897154 cites W4211177544 @default.
• W1850897154 doi "https://doi.org/10.1088/1475-7516/2015/06/014" @default.
• W1850897154 hasPublicationYear "2015" @default.
• W1850897154 type Work @default.
• W1850897154 sameAs 1850897154 @default.

• next