dc.date.accessioned | 2023-09-16T15:17:27Z | |
dc.date.available | 2023-09-16T15:17:27Z | |
dc.date.created | 2023-09-05T09:57:23Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Andersen, Kristian Joten Herman, Daniel Christopher Aurvik, Ragnhild Banerji, Ranajoy Basyrov, Artem Bersanelli, M. Bertocco, S. Brilenkov, Maksym Carbone, M. Colombo, L.P.L. Eriksen, Hans Kristian Kamfjord Eskilt, Johannes Røsok Foss, Marie Kristine Franceschet, C. Fuskeland, Unni Galeotta, S. Galloway, Mathew Gerakakis, S. Gjerløw, Eirik Hensley, B. Iacobellis, M. Ieronymaki, M. Ihle, Håvard Tveit Jewell, J.B. Karakci, Ata Keihänen, Elina Keskitalo, R. Lunde, Jonas Gahr Sturtzel Maggio, G. Maino, D. Maris, M. Mennella, A. Paradiso, S. Partridge, B. Reinecke, M. San, Metin Stutzer, Nils-Ole Suur-Uski, A.-S. Svalheim, Trygve Leithe Tavagnacco, D. Thommesen, Harald Watts, Duncan Wehus, Ingunn Kathrine Zacchei, A. . BeyondPlanck: XIII. Intensity foreground sampling, degeneracies, and priors. Astronomy and Astrophysics (A & A). 2023, 675 | |
dc.identifier.uri | http://hdl.handle.net/10852/105083 | |
dc.description.abstract | We present the intensity foreground algorithms and model employed within the B EYOND P LANCK analysis framework. The B EYOND P LANCK analysis is aimed at integrating component separation and instrumental parameter sampling within a global framework, leading to complete end-to-end error propagation in the Planck Low Frequency Instrument (LFI) data analysis. Given the scope of the B EYOND P LANCK analysis, a limited set of data is included in the component separation process, leading to foreground parameter degeneracies. In order to properly constrain the Galactic foreground parameters, we improve upon the previous Commander component separation implementation by adding a suite of algorithmic techniques. These algorithms are designed to improve the stability and computational efficiency for weakly constrained posterior distributions. These are: (1) joint foreground spectral parameter and amplitude sampling, building on ideas from M IRAMARE ; (2) component-based monopole determination; (3) joint spectral parameter and monopole sampling; and (4) application of informative spatial priors for component amplitude maps. We find that the only spectral parameter with a significant signal-to-noise ratio using the current B EYOND P LANCK data set is the peak frequency of the anomalous microwave emission component, for which we find ν p = 25.3 ± 0.5 GHz; all others must be constrained through external priors. Future works will be aimed at integrating many more data sets into this analysis, both map and time-ordered based, thereby gradually eliminating the currently observed degeneracies in a controlled manner with respect to both instrumental systematic effects and astrophysical degeneracies. When this happens, the simple LFI-oriented data model employed in the current work will need to be generalized to account for both a richer astrophysical model and additional instrumental effects. This work will be organized within the Open Science-based C OSMOGLOBE community effort. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | BeyondPlanck: XIII. Intensity foreground sampling, degeneracies, and priors | |
dc.title.alternative | ENEngelskEnglishBeyondPlanck: XIII. Intensity foreground sampling, degeneracies, and priors | |
dc.type | Journal article | |
dc.creator.author | Andersen, Kristian Joten | |
dc.creator.author | Herman, Daniel Christopher | |
dc.creator.author | Aurvik, Ragnhild | |
dc.creator.author | Banerji, Ranajoy | |
dc.creator.author | Basyrov, Artem | |
dc.creator.author | Bersanelli, M. | |
dc.creator.author | Bertocco, S. | |
dc.creator.author | Brilenkov, Maksym | |
dc.creator.author | Carbone, M. | |
dc.creator.author | Colombo, L.P.L. | |
dc.creator.author | Eriksen, Hans Kristian Kamfjord | |
dc.creator.author | Eskilt, Johannes Røsok | |
dc.creator.author | Foss, Marie Kristine | |
dc.creator.author | Franceschet, C. | |
dc.creator.author | Fuskeland, Unni | |
dc.creator.author | Galeotta, S. | |
dc.creator.author | Galloway, Mathew | |
dc.creator.author | Gerakakis, S. | |
dc.creator.author | Gjerløw, Eirik | |
dc.creator.author | Hensley, B. | |
dc.creator.author | Iacobellis, M. | |
dc.creator.author | Ieronymaki, M. | |
dc.creator.author | Ihle, Håvard Tveit | |
dc.creator.author | Jewell, J.B. | |
dc.creator.author | Karakci, Ata | |
dc.creator.author | Keihänen, Elina | |
dc.creator.author | Keskitalo, R. | |
dc.creator.author | Lunde, Jonas Gahr Sturtzel | |
dc.creator.author | Maggio, G. | |
dc.creator.author | Maino, D. | |
dc.creator.author | Maris, M. | |
dc.creator.author | Mennella, A. | |
dc.creator.author | Paradiso, S. | |
dc.creator.author | Partridge, B. | |
dc.creator.author | Reinecke, M. | |
dc.creator.author | San, Metin | |
dc.creator.author | Stutzer, Nils-Ole | |
dc.creator.author | Suur-Uski, A.-S. | |
dc.creator.author | Svalheim, Trygve Leithe | |
dc.creator.author | Tavagnacco, D. | |
dc.creator.author | Thommesen, Harald | |
dc.creator.author | Watts, Duncan | |
dc.creator.author | Wehus, Ingunn Kathrine | |
dc.creator.author | Zacchei, A. | |
cristin.unitcode | 185,15,3,0 | |
cristin.unitname | Institutt for teoretisk astrofysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 2172370 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy and Astrophysics (A & A)&rft.volume=675&rft.spage=&rft.date=2023 | |
dc.identifier.jtitle | Astronomy and Astrophysics (A & A) | |
dc.identifier.volume | 675 | |
dc.identifier.pagecount | 27 | |
dc.identifier.doi | https://doi.org/10.1051/0004-6361/202243186 | |
dc.subject.nvi | VDP::Astrofysikk, astronomi: 438 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0004-6361 | |
dc.type.version | PublishedVersion | |
cristin.articleid | A13 | |