Browsing Institutt for teoretisk astrofysikk by Author "Rahman, F."

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  • BeyondPlanck: IV. Simulations and validation 
    Brilenkov, Maksym; Fornazier, K.S.F.; Hergt, L.T.; Hoerning, G.A.; Marins, A.; Murokoshi, T.; Rahman, F.; Stutzer, Nils-Ole; Zhou, Y.; Abdalla, F.B.; Andersen, Kristian Joten; Aurvik, Ragnhild; Banerji, Ranajoy; Basyrov, Artem; Battista, A.; Bersanelli, M.; Bertocco, S.; Bollanos, S.; 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.; Herman, Daniel Christopher; Hoang, T.D.; Ieronymaki, M.; Ihle, Håvard Tveit; Jewell, J.B.; Karakci, Ata; Keihänen, Elina; Keskitalo, R.; Maggio, G.; Maino, D.; Maris, M.; Paradiso, S.; Partridge, B.; Reinecke, M.; Suur-Uski, A.-S.; Svalheim, Trygve Leithe; Tavagnacco, D.; Thommesen, Harald; Tomasi, M.; Watts, Duncan; Wehus, Ingunn Kathrine; Zacchei, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    End-to-end simulations play a key role in the analysis of any high-sensitivity cosmic microwave background (CMB) experiment, providing high-fidelity systematic error propagation capabilities that are unmatched by any other ...
  • COSMOGLOBE DR1 results: I. Improved Wilkinson Microwave Anisotropy Probe maps through Bayesian end-to-end analysis 
    Watts, Duncan; Basyrov, Artem; Eskilt, Johannes Røsok; Galloway, Mathew; Gjerløw, Eirik; Hergt, L.T.; Herman, Daniel Christopher; Ihle, Håvard Tveit; Paradiso, S.; Rahman, F.; Thommesen, Harald; Aurvik, Ragnhild; Bersanelli, M.; Bianchi, L.A.; Brilenkov, Maksym; Colombo, L.P.L.; Eriksen, Hans Kristian Kamfjord; Franceschet, C.; Fuskeland, Unni; Hensley, B.; Hoerning, G.A.; Lee, Katherine; Lunde, Jonas Gahr Sturtzel; Marins, A.; Nerval, S.K.; Patel, S.K.; Regnier, M.; San, Metin; Sanyal, S.; Stutzer, Nils-Ole; Verma, A.; Wehus, Ingunn Kathrine; Zhou, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We present C OSMOGLOBE Data Release 1, which implements the first joint analysis of WMAP and Planck LFI time-ordered data, processed within a single Bayesian end-to-end framework. This framework directly builds on a similar ...
  • COSMOGLOBE DR1 results: II. Constraints on isotropic cosmic birefringence from reprocessed WMAP and Planck LFI data 
    Eskilt, Johannes Røsok; Watts, Duncan; Aurvik, Ragnhild; Basyrov, Artem; Bersanelli, Marco; Brilenkov, Maksym; Colombo, L. P. L.; Eriksen, Hans Kristian Kamfjord; Fornazier, K.S.F.; Franceschet, C.; Fuskeland, Unni; Galloway, Mathew; Gjerløw, Eirik; Hensley, B.; Hergt, L.T.; Herman, Daniel Christopher; Ihle, Håvard Tveit; Lee, Katherine; Lunde, Jonas Gahr Sturtzel; Nerval, S.K.; Paradiso, S.; Patel, S. K.; Rahman, F.; Regnier, M.; San, Metin; Sanyal, S.; Stutzer, Nils-Ole; Thommesen, Harald; Verma, A.; Wehus, Ingunn Kathrine; Zhou, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Cosmic birefringence is a parity-violating effect that might have rotated the plane of the linearly polarized light of the cosmic microwave background (CMB) by an angle β since its emission. This angle has recently been ...
  • COSMOGLOBE: Towards end-to-end CMB cosmological parameter estimation without likelihood approximations 
    Eskilt, Johannes Røsok; Lee, Katherine; Watts, Duncan; Anshul, V.; Aurvik, Ragnhild; Basyrov, Artem; Bersanelli, M.; Colombo, L.P.L.; Eriksen, Hans Kristian Kamfjord; Fornazier, K.S.F.; Fuskeland, Unni; Galloway, Mathew; Gjerløw, Eirik; Hergt, L.T.; Ihle, Håvard Tveit; Lunde, Jonas Gahr Sturtzel; Marins, A.; Nerval, S.K.; Paradiso, S.; Rahman, F.; San, Metin; Stutzer, Nils-Ole; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We implement support for a cosmological parameter estimation algorithm in Commander and quantify its computational efficiency and cost. For a semi-realistic simulation similar to Planck LFI 70 GHz, we find that the ...