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Description of turbulent dynamics in the interstellar medium: Multifractal microcanonical analysis. II. Sparse filtering of Herschel observation maps and visualization of filamentarystructures at different length scales

hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorRASHIDI, Arash
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorYAHIA, Hussein
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBONTEMPS, S.
hal.structure.identifierUniversity of Cologne
dc.contributor.authorSCHNEIDER, N.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBONNE, L.
hal.structure.identifierUniversité Paris-Saclay
dc.contributor.authorHENNEBELLE, P.
hal.structure.identifierUniversité Paris-Saclay
dc.contributor.authorSCHOLTYS, J.
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorATTUEL, Guillaume
hal.structure.identifierInstituto de Ciencias del Mar de Barcelona [ICM]
dc.contributor.authorTURIEL, A.
hal.structure.identifierUniversity of Cologne
dc.contributor.authorSIMON, R.
hal.structure.identifierI2S
dc.contributor.authorCAILLY, A.
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorZEBADUA, A.
hal.structure.identifierI2S
dc.contributor.authorCHERIF, A.
hal.structure.identifierI2S
dc.contributor.authorLACROIX, C.
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorMARTIN, Marie
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorEL AOUNI, Anass
hal.structure.identifierGeometry and Statistics in acquisition data [GeoStat]
dc.contributor.authorSAKKA, Chiheb
hal.structure.identifierIndian Institute of Technology Patna [IITP]
dc.contributor.authorMAJI, S.K.
dc.date.issued2024-06-05
dc.identifier.issn0004-6361
dc.description.abstractEnWe present significant improvements to our previous work on noise reduction in Herschel observation maps by defining sparse filtering tools capable of handling, in a unified formalism, a significantly improved noise reduction as well as a deconvolution in order to reduce effects introduced by the limited instrumental response (beam). We implement greater flexibility by allowing a wider choice of parsimonious priors in the noise-reduction process. More precisely, we introduce a sparse filtering and deconvolution approach approach of type $l^2$-$l^p$, with $p > 0$ variable and apply it to a larger set of molecular clouds using Herschel $m data in order to demonstrate their wide range of application. In the Herschel data, we are able to use this approach to highlight extremely fine filamentary structures and obtain singularity spectra that tend to show a significantly less log -normal behavior and a filamentary nature in the less dense regions. We also use high-resolution adaptive magneto-hydrodynamic simulation data to assess the quality of deconvolution in such a simulated beaming framework.
dc.description.sponsorshipGENeration et Evolution des Structures du milieu InterStellaire - ANR-16-CE92-0035
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enISM: structure
dc.subject.enISM: individual objects: Turbulence
dc.subject.enISM: clouds
dc.subject.enmagnetohydrodynamics
dc.subject.ennoise reduction
dc.subject.enmathematical optimisation
dc.subject.enmultifractals
dc.title.enDescription of turbulent dynamics in the interstellar medium: Multifractal microcanonical analysis. II. Sparse filtering of Herschel observation maps and visualization of filamentarystructures at different length scales
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202346499
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.subject.halInformatique [cs]/Traitement du signal et de l'image
dc.description.sponsorshipEuropeCollaborative Research Center 1601 sub-project B2, funded by the DFG, German Research Foundation – 500700252
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.peerReviewedoui
hal.identifierhal-04602048
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04602048v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2024-06-05&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=RASHIDI,%20Arash&YAHIA,%20Hussein&BONTEMPS,%20S.&SCHNEIDER,%20N.&BONNE,%20L.&rft.genre=article


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