Browsing Institutt for teoretisk astrofysikk by Author "Lunde, Jonas Gahr Sturtzel"

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  • BeyondPlanck: I. Global Bayesian analysis of the Planck Low Frequency Instrument data 
    Andersen, Kristian Joten; 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.; Herman, Daniel Christopher; 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. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We describe the B EYOND P LANCK project in terms of our motivation, methodology, and main products, and provide a guide to a set of companion papers that describe each result in more detail. Building directly on experience ...
  • BeyondPlanck: XIII. Intensity foreground sampling, degeneracies, and priors 
    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. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    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 ...
  • COMAP Early Science. I. Overview 
    Cleary, Kieran A.; Borowska, Jowita; Breysse, Patrick C.; Catha, Morgan; Chung, Dongwoo T.; Church, Sarah E.; Dickinson, Clive; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Gundersen, Joshua Ott; Harper, Stuart E.; Harris, Andrew I.; Hobbs, Richard; Ihle, Håvard Tveit; Kim, Junhan; Kocz, Jonathon; Lamb, James W.; Lunde, Jonas Gahr Sturtzel; Padmanabhan, Hamsa; Pearson, Timothy J.; Philip, Liju; Powell, Travis W.; Rasmussen, Maren S.; Readhead, Anthony C. S.; Rennie, Thomas J.; Silva, Marta Bruno; Stutzer, Nils-Ole; Uzgil, Bade D.; Watts, Duncan; Wehus, Ingunn Kathrine; Woody, David P.; Basoalto, Lilian; Bond, J. Richard; Dunne, Delaney A.; Gaier, Todd; Hensley, Brandon; Keating, Laura C.; Lawrence, Charles R.; Murray, Norman; Paladini, Roberta; Reeves, Rodrigo; Viero, Marco P.; Wechsler, Risa H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The CO Mapping Array Project (COMAP) aims to use line-intensity mapping of carbon monoxide (CO) to trace the distribution and global properties of galaxies over cosmic time, back to the Epoch of Reionization (EoR). To ...
  • COMAP Early Science. II. Pathfinder Instrument 
    Lamb, James W.; Cleary, Kieran A.; Woody, David P.; Catha, Morgan; Chung, Dongwoo T.; Gundersen, Joshua Ott; Harper, Stuart E.; Harris, Andrew I.; Hobbs, Richard; Ihle, Håvard Tveit; Kocz, Jonathon; Pearson, Timothy J.; Philip, Liju; Powell, Travis W.; Basoalto, Lilian; Bond, J. Richard; Borowska, Jowita; Breysse, Patrick C.; Church, Sarah E.; Dickinson, Clive; Dunne, Delaney A.; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Gaier, Todd; Kim, Junhan; Lawrence, Charles R.; Lunde, Jonas Gahr Sturtzel; Padmanabhan, Hamsa; Rasmussen, Maren S.; Readhead, Anthony C. S.; Reeves, Rodrigo; Rennie, Thomas J.; Stutzer, Nils-Ole; Viero, Marco P.; Watts, Duncan; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Line intensity mapping (LIM) is a new technique for tracing the global properties of galaxies over cosmic time. Detection of the very faint signals from redshifted carbon monoxide (CO), a tracer of star formation, pushes ...
  • COMAP Early Science. III. CO Data Processing 
    Foss, Marie Kristine; Ihle, Håvard Tveit; Borowska, Jowita; Cleary, Kieran A.; Eriksen, Hans Kristian Kamfjord; Harper, Stuart E.; Kim, Junhan; Lamb, James W.; Lunde, Jonas Gahr Sturtzel; Philip, Liju; Rasmussen, Maren; Stutzer, Nils-Ole; Uzgil, Bade D.; Watts, Duncan; Wehus, Ingunn Kathrine; Woody, David P.; Bond, J. Richard; Breysse, Patrick C.; Catha, Morgan; Church, Sarah E.; Chung, Dongwoo T.; Dickinson, Clive; Dunne, Delaney A.; Gaier, Todd; Gundersen, Joshua Ott; Harris, Andrew I.; Hobbs, Richard; Lawrence, Charles R.; Murray, Norman; Readhead, Anthony C. S.; Padmanabhan, Hamsa; Pearson, Timothy J.; Rennie, Thomas J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We describe the first-season CO Mapping Array Project (COMAP) analysis pipeline that converts raw detector readouts to calibrated sky maps. This pipeline implements four main steps: gain calibration, filtering, data ...
  • COMAP Early Science. IV. Power Spectrum Methodology and Results 
    Ihle, Håvard Tveit; Borowska, Jowita; Cleary, Kieran A.; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Harper, Stuart E.; Kim, Junhan; Lunde, Jonas Gahr Sturtzel; Philip, Liju; Rasmussen, Maren; Stutzer, Nils-Ole; Uzgil, Bade D.; Watts, Duncan; Wehus, Ingunn Kathrine; Bond, J. Richard; Breysse, Patrick C.; Catha, Morgan; Church, Sarah E.; Chung, Dongwoo T.; Dickinson, Clive; Dunne, Delaney A.; Gaier, Todd; Gundersen, Joshua Ott; Harris, Andrew I.; Hobbs, Richard; Lamb, James W.; Lawrence, Charles R.; Murray, Norman; Readhead, Anthony C. S.; Padmanabhan, Hamsa; Pearson, Timothy J.; Rennie, Thomas J.; Woody, David P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We present the power spectrum methodology used for the first-season COMAP analysis, and assess the quality of the current data set. The main results are derived through the Feed–Feed Pseudo-Cross-Spectrum (FPXS) method, ...
  • COMAP Early Science. V. Constraints and Forecasts at z ∼3 
    Chung, Dongwoo T.; Breysse, Patrick C.; Cleary, Kieran A.; Ihle, Håvard Tveit; Padmanabhan, Hamsa; Silva, Marta Bruno; Bond, J. Richard; Borowska, Jowita; Catha, Morgan; Church, Sarah E.; Dunne, Delaney A.; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Gaier, Todd; Gundersen, Joshua Ott; Harper, Stuart E.; Harris, Andrew I.; Hensley, Brandon; Hobbs, Richard; Keating, Laura C.; Kim, Junhan; Lamb, James W.; Lawrence, Charles R.; Lunde, Jonas Gahr Sturtzel; Murray, Norman; Pearson, Timothy J.; Philip, Liju; Rasmussen, Maren; Readhead, Anthony C. S.; Rennie, Thomas J.; Stutzer, Nils-Ole; Uzgil, Bade D.; Viero, Marco P.; Watts, Duncan; Wechsler, Risa H.; Wehus, Ingunn Kathrine; Woody, David P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We present the current state of models for the z ∼ 3 carbon monoxide (CO) line intensity signal targeted by the CO Mapping Array Project (COMAP) Pathfinder in the context of its early science results. Our fiducial model, ...
  • COMAP Early Science. VI. A First Look at the COMAP Galactic Plane Survey 
    Rennie, Thomas J.; Harper, Stuart E.; Dickinson, Clive; Philip, Liju; Cleary, Kieran A.; Bond, Richard J.; Borowska, Jowita; Breysse, Patrick C.; Catha, Morgan; Cepeda-Arroita, Roke; Chung, Dongwoo T.; Church, Sarah E.; Dunne, Delaney A.; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Gaier, Todd; Gundersen, Joshua Ott; Harris, Andrew I.; Hensley, Brandon; Hobbs, Richard; Ihle, Håvard Tveit; Lamb, James W.; Lawrence, Charles R.; Lunde, Jonas Gahr Sturtzel; Paladini, Roberta; Pearson, Timothy J.; Rasmussen, Maren; Readhead, Anthony C. S.; Stutzer, Nils-Ole; Watts, Duncan; Wehus, Ingunn Kathrine; Woody, David P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We present early results from the CO Mapping Array Project (COMAP) Galactic Plane Survey conducted between 2019 June and 2021 April, spanning 20° < ℓ < 40° in Galactic longitude and ∣b∣ < 1fdg5 in Galactic latitude with ...
  • COMAP Early Science. VII. Prospects for CO Intensity Mapping at Reionization 
    Breysse, Patrick C.; Chung, Dongwoo T.; Cleary, Kieran A.; Ihle, Håvard Tveit; Padmanabhan, Hamsa; Silva, Marta Bruno; Bond, J. Richard; Borowska, Jowita; Catha, Morgan; Church, Sarah E.; Dunne, Delaney A.; Eriksen, Hans Kristian Kamfjord; Foss, Marie Kristine; Gaier, Todd; Gundersen, Joshua Ott; Harris, Andrew I.; Hobbs, Richard; Keating, Laura; Lamb, James W.; Lawrence, Charles R.; Lunde, Jonas Gahr Sturtzel; Murray, Norman; Pearson, Timothy J.; Philip, Liju; Rasmussen, Maren; Readhead, Anthony C. S.; Rennie, Thomas J.; Stutzer, Nils-Ole; Viero, Marco P.; Watts, Duncan; Wehus, Ingunn Kathrine; Woody, David P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We introduce COMAP-EoR, the next generation of the Carbon Monoxide Mapping Array Project aimed at extending CO intensity mapping to the Epoch of Reionization. COMAP-EoR supplements the existing 30 GHz COMAP Pathfinder with ...
  • COMAP Early Science. VIII. A Joint Stacking Analysis with eBOSS Quasars 
    Dunne, Delaney A.; Cleary, Kieran A.; Breysse, Patrick C.; Chung, Dongwoo T.; Ihle, Håvard Tveit; Bond, J. Richard; Eriksen, Hans Kristian Kamfjord; Gundersen, Joshua Ott; Keating, Laura C.; Kim, Junhan; Lunde, Jonas Gahr Sturtzel; Murray, Norman; Padmanabhan, Hamsa; Philip, Liju; Stutzer, Nils-Ole; Tolgay, Doğa; Wehus, Ingunn Kathrine; Church, Sarah E.; Gaier, Todd; Harris, Andrew I.; Hobbs, Richard; Lamb, James W.; Lawrence, Charles R.; Readhead, Anthony C. S.; Woody, David P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
  • 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 ...
  • From BeyondPlanck to Cosmoglobe: Preliminary WMAP Q-band analysis 
    Watts, Duncan; Galloway, Mathew; Ihle, Håvard Tveit; Andersen, Kristian Joten; 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.; Gerakakis, S.; Gjerløw, Eirik; Hensley, B.; Herman, Daniel Christopher; Iacobellis, M.; Ieronymaki, M.; Jewell, J.B.; Karakci, Ata; Keihänen, Elina; Keskitalo, R.; Lunde, Jonas Gahr Sturtzel; Maggio, G.; Maino, D.; Maris, M.; Paradiso, S.; Partridge, B.; Reinecke, M.; San, Metin; Stutzer, Nils-Ole; Suur-Uski, A.-S.; Svalheim, Trygve Leithe; Tavagnacco, D.; Thommesen, Harald; Wehus, Ingunn Kathrine; Zacchei, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We present the first application of the C OSMOGLOBE analysis framework by analyzing nine-year WMAP time-ordered observations that uses similar machinery to that of B EYOND P LANCK for the Planck Low Frequency Instrument ...
  • Low-level Data Analysis, Calibration, and Ground Modeling with COMAP 
    Lunde, Jonas Gahr Sturtzel (Master thesis / Masteroppgave, 2021)
    The CO Mapping Array Project (COMAP) is a line intensity mapping experiment currently in its Pathfinder phase, where it is targeting CO emissions at redshifts z=2.4-3.4. A main goal of the Pathfinder phase is to build a ...