Matches in SemOpenAlex for { <https://semopenalex.org/work/W4225996892> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W4225996892 abstract "We address a current caveat in the deconvolution of the Primordial Power Spectrum (PPS), from observed Cosmic Microwave Background (CMB) temperature anisotropy, in the presence of weak lensing of the CMB by the large scale structure (LSS) in the Universe. Richardson-Lucy (RL) deconvolution algorithm has been used in the context of reconstructing a free-form PPS, $P_R(k)$ from the observed lensed CMB temperature anisotropy power spectrum $widetilde{C}_{ell}^{TT}$. We propose and demonstrate that the RL algorithm works in the context of a non-linear convolution where the non-linear contribution is small, such as the effect of weak lensing of the $widetilde{C}_{ell}^{TT}$, for the deconvolution of the PPS from it. The Non-Linear Iterative Richardson-Lucy (NIRL) algorithm is successful at both convergence, as well as fidelity, in reconstructing features in some underlying PPS. This makes PPS reconstruction efforts more robust in accounting for the weak lensing effect in the CMB temperature observations. No prior assumptions on the PPS are involved during the iterative delensing process, and distinct improvement is noted over a power-law template based delensing approach used earlier, at the cost of moderately increased computational cost due to the NIRL reconstruction kernel." @default.
- W4225996892 created "2022-05-05" @default.
- W4225996892 creator A5067229262 @default.
- W4225996892 creator A5077775179 @default.
- W4225996892 date "2021-12-28" @default.
- W4225996892 modified "2023-09-26" @default.
- W4225996892 title "Primordial Power Spectrum from Lensed CMB Temperature Spectrum using Iterative Delensing" @default.
- W4225996892 doi "https://doi.org/10.48550/arxiv.2112.14008" @default.
- W4225996892 hasPublicationYear "2021" @default.
- W4225996892 type Work @default.
- W4225996892 citedByCount "0" @default.
- W4225996892 crossrefType "posted-content" @default.
- W4225996892 hasAuthorship W4225996892A5067229262 @default.
- W4225996892 hasAuthorship W4225996892A5077775179 @default.
- W4225996892 hasBestOaLocation W42259968921 @default.
- W4225996892 hasConcept C105795698 @default.
- W4225996892 hasConcept C11413529 @default.
- W4225996892 hasConcept C114614502 @default.
- W4225996892 hasConcept C120665830 @default.
- W4225996892 hasConcept C121332964 @default.
- W4225996892 hasConcept C151730666 @default.
- W4225996892 hasConcept C168110828 @default.
- W4225996892 hasConcept C174576160 @default.
- W4225996892 hasConcept C190670322 @default.
- W4225996892 hasConcept C207297109 @default.
- W4225996892 hasConcept C2779343474 @default.
- W4225996892 hasConcept C33024259 @default.
- W4225996892 hasConcept C33923547 @default.
- W4225996892 hasConcept C44870925 @default.
- W4225996892 hasConcept C74193536 @default.
- W4225996892 hasConcept C85725439 @default.
- W4225996892 hasConcept C86803240 @default.
- W4225996892 hasConcept C98444146 @default.
- W4225996892 hasConceptScore W4225996892C105795698 @default.
- W4225996892 hasConceptScore W4225996892C11413529 @default.
- W4225996892 hasConceptScore W4225996892C114614502 @default.
- W4225996892 hasConceptScore W4225996892C120665830 @default.
- W4225996892 hasConceptScore W4225996892C121332964 @default.
- W4225996892 hasConceptScore W4225996892C151730666 @default.
- W4225996892 hasConceptScore W4225996892C168110828 @default.
- W4225996892 hasConceptScore W4225996892C174576160 @default.
- W4225996892 hasConceptScore W4225996892C190670322 @default.
- W4225996892 hasConceptScore W4225996892C207297109 @default.
- W4225996892 hasConceptScore W4225996892C2779343474 @default.
- W4225996892 hasConceptScore W4225996892C33024259 @default.
- W4225996892 hasConceptScore W4225996892C33923547 @default.
- W4225996892 hasConceptScore W4225996892C44870925 @default.
- W4225996892 hasConceptScore W4225996892C74193536 @default.
- W4225996892 hasConceptScore W4225996892C85725439 @default.
- W4225996892 hasConceptScore W4225996892C86803240 @default.
- W4225996892 hasConceptScore W4225996892C98444146 @default.
- W4225996892 hasLocation W42259968921 @default.
- W4225996892 hasOpenAccess W4225996892 @default.
- W4225996892 hasPrimaryLocation W42259968921 @default.
- W4225996892 hasRelatedWork W1976497784 @default.
- W4225996892 hasRelatedWork W2053446678 @default.
- W4225996892 hasRelatedWork W2101070158 @default.
- W4225996892 hasRelatedWork W2277913437 @default.
- W4225996892 hasRelatedWork W2911250918 @default.
- W4225996892 hasRelatedWork W3100224734 @default.
- W4225996892 hasRelatedWork W3139143834 @default.
- W4225996892 hasRelatedWork W4225996892 @default.
- W4225996892 hasRelatedWork W4297361327 @default.
- W4225996892 hasRelatedWork W2401522499 @default.
- W4225996892 isParatext "false" @default.
- W4225996892 isRetracted "false" @default.
- W4225996892 workType "article" @default.