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Christopher G. R. Wallis
Researcher at University College London
Publications - 20
Citations - 380
Christopher G. R. Wallis is an academic researcher from University College London. The author has contributed to research in topics: Planar projection & Bayesian inference. The author has an hindex of 9, co-authored 20 publications receiving 320 citations. Previous affiliations of Christopher G. R. Wallis include University of Manchester.
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Journal ArticleDOI
Exploring cosmic origins with CORE: Survey requirements and mission design
Jacques Delabrouille,P. de Bernardis,François R. Bouchet,Ana Achúcarro,Ana Achúcarro,Peter A. R. Ade,R. Allison,Frederico Arroja,Eduardo Artal,M. Ashdown,Carlo Baccigalupi,Mario Ballardini,Mario Ballardini,A. J. Banday,R. Banerji,Domingos Barbosa,James G. Bartlett,Nicola Bartolo,Nicola Bartolo,S. Basak,S. Basak,Jochem J. A. Baselmans,Kaustuv Basu,Elia S. Battistelli,Richard A. Battye,Daniel Baumann,Alain Benoit,Marco Bersanelli,Marco Bersanelli,Aurelien Bideaud,Marek Biesiada,Maciej Bilicki,Maciej Bilicki,A. Bonaldi,Matteo Bonato,Julian Borrill,Julian Borrill,Francois Boulanger,Thejs Brinckmann,Michael L. Brown,Martin Bucher,Carlo Burigana,Carlo Burigana,Alessandro Buzzelli,Alessandro Buzzelli,Giovanni Cabass,Zhen-Yi Cai,Martino Calvo,Andrea Caputo,C. S. Carvalho,F. J. Casas,G. Castellano,A. Catalano,Anthony Challinor,I. Charles,Jens Chluba,David L. Clements,Sebastien Clesse,Sergio Colafrancesco,I. Colantoni,D. Contreras,Alessandro Coppolecchia,Martin Crook,Giuseppe D'Alessandro,Guido D'Amico,A. Da Silva,M. A. de Avillez,M. A. de Avillez,G. de Gasperis,M. De Petris,G. de Zotti,Luigi Danese,F.-X. Désert,Vincent Desjacques,Vincent Desjacques,E. Di Valentino,E. Di Valentino,Clive Dickinson,Jose M. Diego,Simon Doyle,Ruth Durrer,Cora Dvorkin,H. K. Eriksen,Josquin Errard,Stephen M. Feeney,Stephen M. Feeney,R. Fernandez-Cobos,Fabio Finelli,Francesco Forastieri,Cristian Franceschet,U. Fuskeland,Silvia Galli,Ricardo Genova-Santos,Ricardo Genova-Santos,Martina Gerbino,Elena Giusarma,Alicia Gomez,J. González-Nuevo,Sebastian Grandis,J. Greenslade,Johannes Goupy,S. Hagstotz,Shaul Hanany,Will Handley,Sophie Henrot-Versille,Carlos Hernández-Monteagudo,C. Hervias-Caimapo,Matthew Hills,Mark Hindmarsh,Mark Hindmarsh,Mark Hindmarsh,Eric Hivon,D. T. Hoang,D. T. Hoang,Deanna C. Hooper,Bin Hu,Bin Hu,E. Keihänen,E. Keihänen,Reijo Keskitalo,Reijo Keskitalo,K. Kiiveri,K. Kiiveri,Ted Kisner,Ted Kisner,Thomas Kitching,M. Kunz,Hannu Kurki-Suonio,Hannu Kurki-Suonio,Guilaine Lagache,Luca Lamagna,Andrea Lapi,Anthony Lasenby,Massimiliano Lattanzi,A. M. C. Le Brun,Julien Lesgourgues,Michele Liguori,Michele Liguori,V. Lindholm,V. Lindholm,Joanes Lizarraga,Gemma Luzzi,J. F. Macías-Pérez,Bruno Maffei,N. Mandolesi,N. Mandolesi,S. Martin,Enrique Martinez-Gonzalez,C. J. A. P. Martins,Silvia Masi,Marcella Massardi,Sabino Matarrese,Pasquale Mazzotta,D. McCarthy,Alessandro Melchiorri,Jean-Baptiste Melin,A. Mennella,Joseph J. Mohr,Diego Molinari,Diego Molinari,Alessandro Monfardini,L. A. Montier,Paolo Natoli,Mattia Negrello,Alessio Notari,F. Noviello,F. Oppizzi,Créidhe O'Sullivan,L. Pagano,Alessandro Paiella,Enrico Pajer,Daniela Paoletti,S. Paradiso,R. B. Partridge,Guillaume Patanchon,Subodh P. Patil,O. Perdereau,F. Piacentini,M. Piat,Giampaolo Pisano,L. Polastri,Gianluca Polenta,Gianluca Polenta,Agnieszka Pollo,Nicolas Ponthieu,Vivian Poulin,Vivian Poulin,D. Prêle,Miguel Quartin,Andrea Ravenni,Mathieu Remazeilles,A. Renzi,Christophe Ringeval,Diederik Roest,Matthieu Roman,Boudewijn F. Roukema,Boudewijn F. Roukema,Jose Alberto Rubino-Martin,Jose Alberto Rubino-Martin,L. Salvati,Douglas Scott,Stephen Serjeant,G. Signorelli,Alexei A. Starobinsky,Alexei A. Starobinsky,Rashid Sunyaev,C. Y. Tan,A. Tartari,Gianmassimo Tasinato,Luisa Toffolatti,Luisa Toffolatti,M. Tomasi,M. Tomasi,Jesús Torrado,D. Tramonte,Neil Trappe,Sébastien Triqueneaux,Matthieu Tristram,Tiziana Trombetti,Tiziana Trombetti,M. Tucci,Carole Tucker,Jon Urrestilla,Jussi Valiviita,Jussi Valiviita,R. van de Weygaert,B. Van Tent,Vincent Vennin,Licia Verde,G. Vermeulen,P. Vielva,Nicola Vittorio,F. Voisin,Christopher G. R. Wallis,Christopher G. R. Wallis,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Jochen Weller,Karl Young,Mario Zannoni,Mario Zannoni +240 more
TL;DR: The requirements for a future CMB polarisation survey addressing these scientific objectives are listed, and the design drivers of the COREmfive space mission proposed to ESA in answer to the "M5" call for a medium-sized mission are discussed.
Journal ArticleDOI
Exploring cosmic origins with CORE: mitigation of systematic effects
Paolo Natoli,M. Ashdown,R. Banerji,Julian Borrill,Julian Borrill,Alessandro Buzzelli,Alessandro Buzzelli,G. de Gasperis,Jacques Delabrouille,Eric Hivon,Diego Molinari,Diego Molinari,Guillaume Patanchon,L. Polastri,M. Tomasi,M. Tomasi,François R. Bouchet,Sophie Henrot-Versille,D. T. Hoang,Reijo Keskitalo,Reijo Keskitalo,K. Kiiveri,K. Kiiveri,Ted Kisner,Ted Kisner,V. Lindholm,V. Lindholm,D. McCarthy,F. Piacentini,O. Perdereau,G. Polenta,G. Polenta,M. Tristram,Ana Achúcarro,Ana Achúcarro,Peter A. R. Ade,R. Allison,Carlo Baccigalupi,Mario Ballardini,Mario Ballardini,A. J. Banday,A. J. Banday,James G. Bartlett,Nicola Bartolo,Nicola Bartolo,S. Basak,S. Basak,Daniel Baumann,Marco Bersanelli,Marco Bersanelli,A. Bonaldi,M. Bonato,M. Bonato,Francois Boulanger,Thejs Brinckmann,Martin Bucher,Carlo Burigana,Carlo Burigana,Z-Y. Cai,Martino Calvo,C-S. Carvalho,Marco Castellano,Anthony Challinor,Jens Chluba,Sebastien Clesse,I. Colantoni,Alessandro Coppolecchia,Martin Crook,Giuseppe D'Alessandro,P. de Bernardis,G. de Zotti,E. Di Valentino,E. Di Valentino,J-M. Diego,Josquin Errard,Stephen M. Feeney,R. Fernandez-Cobos,Fabio Finelli,Francesco Forastieri,Silvia Galli,Ricardo Genova-Santos,Ricardo Genova-Santos,Martina Gerbino,Martina Gerbino,J. González-Nuevo,Sebastian Grandis,J. Greenslade,A. Gruppuso,A. Gruppuso,S. Hagstotz,Shaul Hanany,Will Handley,Carlos Hernández-Monteagudo,C. Hervias-Caimapo,Matthew Hills,E. Keihänen,E. Keihänen,Thomas Kitching,M. Kunz,Hannu Kurki-Suonio,Hannu Kurki-Suonio,Luca Lamagna,Anthony Lasenby,Massimiliano Lattanzi,Julien Lesgourgues,Antony Lewis,Michele Liguori,Michele Liguori,M. López-Caniego,Gemma Luzzi,Bruno Maffei,N. Mandolesi,N. Mandolesi,Enrique Martinez-Gonzalez,C. J. A. P. Martins,Silvia Masi,S. Matarrese,Alessandro Melchiorri,J-B. Melin,M. Migliaccio,Alessandro Monfardini,Mattia Negrello,Alessio Notari,L. Pagano,Alessandro Paiella,Daniela Paoletti,M. Piat,Giampaolo Pisano,A. Pollo,Vivian Poulin,Vivian Poulin,Miguel Quartin,Mathieu Remazeilles,M. Roman,Graziano Rossi,J-A. Rubino-Martin,J-A. Rubino-Martin,L. Salvati,G. Signorelli,A. Tartari,D. Tramonte,Neil Trappe,Tiziana Trombetti,Tiziana Trombetti,Carole Tucker,Jussi Valiviita,Jussi Valiviita,R. Van de Weijgaert,R. Van de Weijgaert,B. Van Tent,Vincent Vennin,P. Vielva,Nicola Vittorio,Christopher G. R. Wallis,Karl Young,Mario Zannoni,Mario Zannoni +156 more
TL;DR: In this paper, the authors present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission, and employ timeline-to-map simulations to verify that the CORE instrumental set-up and scanning strategy allow us to measure sky polarization to a level of accuracy adequate to the mission science goals.
Journal ArticleDOI
Optimal scan strategies for future CMB satellite experiments
Christopher G. R. Wallis,Christopher G. R. Wallis,Michael L. Brown,Richard A. Battye,Jacques Delabrouille +4 more
TL;DR: In this article, the authors investigate the role that a scan strategy can have in mitigating certain common systematics by averaging systematic errors down with many crossing angles and present approximate analytic forms for the error on the recovered B-mode power spectrum that would result from differential gain, differential pointing and differential ellipticity for the case where two detector pairs are used in a polarization experiment.
Posted Content
Mapping dark matter on the celestial sphere with weak gravitational lensing
TL;DR: In this article, an extension of the Kaiser-Squires estimator to the spherical setting is proposed to recover convergence maps of the integrated matter distribution from weak gravitational lensing surveys.
Journal ArticleDOI
Exploring cosmic origins with CORE: mitigation of systematic effects
Paolo Natoli,M. Ashdown,R. Banerji,J. Borrill,Alessandro Buzzelli,G. de Gasperis,Jacques Delabrouille,Eric Hivon,Diego Molinari,Guillaume Patanchon,L. Polastri,M. Tomasi,François R. Bouchet,Sophie Henrot-Versille,D. T. Hoang,Reijo Keskitalo,K. Kiiveri,Ted Kisner,V. Lindholm,D. McCarthy,F. Piacentini,O. Perdereau,G. Polenta,M. Tristram,Ana Achúcarro,Peter A. R. Ade,R. Allison,C. Baccigalupi,Mario Ballardini,A. J. Banday,James G. Bartlett,Nicola Bartolo,S. Basak,J. J. A. Baselmans,Daniel Baumann,Marco Bersanelli,A. Bonaldi,M. Bonato,Francois Boulanger,Thejs Brinckmann,Martin Bucher,Carlo Burigana,Zhen-Yi Cai,Martino Calvo,C. S. Carvalho,G. Castellano,Anthony Challinor,Jens Chluba,Sebastien Clesse,I. Colantoni,Alessandro Coppolecchia,Martin Crook,Giuseppe D'Alessandro,P. de Bernardis,G. de Zotti,E. Di Valentino,Jose M. Diego,Josquin Errard,Stephen M. Feeney,R. Fernandez-Cobos,Fabio Finelli,Francesco Forastieri,Silvia Galli,Ricardo Genova-Santos,Martina Gerbino,J. González-Nuevo,Sebastian Grandis,J. Greenslade,A. Gruppuso,S. Hagstotz,Shaul Hanany,Will Handley,Carlos Hernández-Monteagudo,C. Hervias-Caimapo,Matthew Hills,E. Keihänen,Thomas Kitching,M. Kunz,Hannu Kurki-Suonio,Luca Lamagna,Anthony Lasenby,Massimiliano Lattanzi,Julien Lesgourgues,A. Lewis,Michele Liguori,M. López-Caniego,Gemma Luzzi,Bruno Maffei,Nazzareno Mandolesi,Enrique Martinez-Gonzalez,C. J. A. P. Martins,Silvia Masi,Alessandro Melchiorri,Jean-Baptiste Melin,M. Migliaccio,Alessandro Monfardini,Mattia Negrello,Alessio Notari,L. Pagano,Alessandro Paiella,Daniela Paoletti,M. Piat,Giampaolo Pisano,A. Pollo,Vivian Poulin,Miguel Quartin,Mathieu Remazeilles,Matthieu Roman,Graziano Rossi,Jose Alberto Rubino-Martin,L. Salvati,G. Signorelli,A. Tartari,D. Tramonte,Neil Trappe,Tiziana Trombetti,Carole Tucker,J. Valiviita,R. Van de Weijgaert,B. Van Tent,Vincent Vennin,P. Vielva,Nicola Vittorio,Christopher G. R. Wallis,Karl Young,Mario Zannoni +125 more
TL;DR: In this article, the authors present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission, and employ timeline-to-map simulations to verify that the CORE instrumental set-up and scanning strategy allow us to measure sky polarization to a level of accuracy adequate to the mission science goals.