{"id":1490,"date":"2026-08-04T15:51:53","date_gmt":"2026-08-04T13:51:53","guid":{"rendered":"https:\/\/www-new.ias.u-psud.fr\/?p=1490"},"modified":"2026-09-14T18:50:19","modified_gmt":"2026-09-14T16:50:19","slug":"planck","status":"publish","type":"post","link":"https:\/\/www.ias.u-psud.fr\/index.php\/2026\/08\/04\/planck\/","title":{"rendered":"Planck"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1490\" class=\"elementor elementor-1490\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-365d0f3 e-flex e-con-boxed e-con e-parent\" data-id=\"365d0f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-84ab3f5 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"84ab3f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"160\" height=\"110\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/Planck.jpg\" class=\"attachment-large size-large wp-image-1524\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f4f600f e-flex e-con-boxed e-con e-parent\" data-id=\"f4f600f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63f7b05 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"63f7b05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Planck<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b7c05e e-con e-atomic-element e-flexbox-base e-9b7c05e-607ee4c \" data-id=\"9b7c05e\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"9b7c05e\">\n    \t\t<div class=\"elementor-element elementor-element-d72e17c elementor-widget elementor-widget-text-editor\" data-id=\"d72e17c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Planck permet de fournir des r\u00e9ponses \u00e0 certaines des questions les plus importantes de la science moderne : comment l&rsquo;Univers a t-il commenc\u00e9, comment a t-il \u00e9volu\u00e9 vers l&rsquo;\u00e9tat que nous observons aujourd&rsquo;hui, et comment peut-il continuer \u00e0 \u00e9voluer dans le futur ? L&rsquo;objectif de Planck a \u00e9t\u00e9 d&rsquo;analyser, avec la plus haute pr\u00e9cision jamais atteinte, les restes du rayonnement qui remplissait l&rsquo;Univers juste apr\u00e8s le Big Bang, ce que nous observons aujourd&rsquo;hui comme le Fond Diffus Cosmologique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5612ae1 e-flex e-con-boxed e-con e-parent\" data-id=\"5612ae1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4211889 elementor-widget elementor-widget-heading\" data-id=\"4211889\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le r\u00f4le de l'IAS<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d2c731 e-con e-atomic-element e-flexbox-base e-8d2c731-bc6f834 \" data-id=\"8d2c731\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"8d2c731\">\n    \t\t<div class=\"elementor-element elementor-element-10d0162 elementor-widget elementor-widget-text-editor\" data-id=\"10d0162\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le P.I. de Planck-HFI est Jean-Loup Puget, membre de l&rsquo;IAS.<br \/>L&rsquo;IAS est tr\u00e8s fortement impliqu\u00e9 dans plusieurs aspects de Planck-HFI autant du point de vue de l&rsquo;instrumentation (<a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/station-detalonnage\/\" target=\"_blank\" rel=\"noopener\">tests et \u00e9talonnages<\/a> dans les locaux de l&rsquo;IAS,\u00a0<a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/mecanique-thermique-et-cryogenique\/\" target=\"_blank\" rel=\"noopener\">design m\u00e9canique &amp; thermique<\/a>, int\u00e9gration, etc.), des op\u00e9rations en vol (dans <a href=\"http:\/\/idoc.ias.u-psud.fr\">IDOC<\/a>), du traitement des donn\u00e9es et de leur analyse scientifique (\u00e9quipe <a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/cosmologie\/\" target=\"_blank\" rel=\"noopener\">Cosmologie<\/a>). L&rsquo;IAS participe activement \u00e0 de nombreux groupes de travail de Planck.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1421993 e-con e-atomic-element e-flexbox-base e-5168a49 \" data-id=\"1421993\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"1421993\">\n    <div class=\"elementor-element elementor-element-079d7f6 e-con e-atomic-element e-flexbox-base e-079d7f6-055699d \" data-id=\"079d7f6\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"079d7f6\">\n    <div class=\"elementor-element elementor-element-cc8f452 e-con e-atomic-element e-flexbox-base e-cc8f452-9a6bc4f \" data-id=\"cc8f452\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"cc8f452\">\n    <div class=\"elementor-element elementor-element-19feed9 e-flex e-con-boxed e-con e-parent\" data-id=\"19feed9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-e072de3 e-con e-atomic-element e-flexbox-base e-e072de3-06540ee \" data-id=\"e072de3\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"e072de3\">\n    \t\t<div class=\"elementor-element elementor-element-fbec74e elementor-widget elementor-widget-button\" data-id=\"fbec74e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#en-savoir-plus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">En savoir plus<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n\n<\/div>\n<div class=\"elementor-element elementor-element-a181800 e-con e-atomic-element e-flexbox-base e-a181800-926350d \" data-id=\"a181800\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"a181800\">\n    \t\t<div class=\"elementor-element elementor-element-bc4a91b elementor-widget elementor-widget-n-accordion\" data-id=\"bc4a91b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1970\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1970\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Statut <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1970\" class=\"elementor-element elementor-element-ffd0654 e-con-full e-flex e-con e-child\" data-id=\"ffd0654\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1e246f0 elementor-widget elementor-widget-text-editor\" data-id=\"1e246f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0En exploitation<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1971\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1971\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Partenaires (acad\u00e9miques \/ industriels) <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1971\" class=\"elementor-element elementor-element-9ddd6cc e-con-full e-flex e-con e-child\" data-id=\"9ddd6cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5652256 elementor-widget elementor-widget-image\" data-id=\"5652256\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.esa.int\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"482\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-768x482.jpg\" class=\"attachment-medium_large size-medium_large wp-image-1244\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-768x482.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-300x188.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-1024x643.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-1536x964.jpg 1536w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653.jpg 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1972\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1972\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Financeurs <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1972\" class=\"elementor-element elementor-element-977f54e e-con-full e-flex e-con e-child\" data-id=\"977f54e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c97f23e elementor-widget elementor-widget-image\" data-id=\"c97f23e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.esa.int\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"482\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-768x482.jpg\" class=\"attachment-medium_large size-medium_large wp-image-1244\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-768x482.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-300x188.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-1024x643.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653-1536x964.jpg 1536w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/ESA_Logo_pillars-1892940653.jpg 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1973\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1973\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Dates cl\u00e9s (pr\u00e9v.) <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1973\" class=\"elementor-element elementor-element-ae94f78 e-flex e-con-boxed e-con e-child\" data-id=\"ae94f78\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1974\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1974\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> \u00c9tapes cl\u00e9s <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1974\" class=\"elementor-element elementor-element-4f265e0 e-flex e-con-boxed e-con e-child\" data-id=\"4f265e0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c404145 elementor-widget elementor-widget-text-editor\" data-id=\"c404145\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Tests du mod\u00e8le de vol : juin-juillet 2006<\/p>\n<p>Lancement : 14 mai 2009<\/p>\n<p>Interpr\u00e9tation des donn\u00e9es<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-72b19574 e-con-full e-flex e-con e-parent\" data-id=\"72b19574\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-53a7b892 e-con-full e-flex e-con e-child\" data-id=\"53a7b892\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-13a0d604 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"13a0d604\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contacts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3108905 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"3108905\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rents (scientifiques et techniques) <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c63b2a5 elementor-widget elementor-widget-text-editor\" data-id=\"1c63b2a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><a href=\"https:\/\/www.ias.universite-paris-saclay.fr\/annuaire?nom=aghanim\">Nabila Aghanim<\/a>, Directrice de recherche, <span class=\"kY2IgmnCmOGjharHErah N56cWZpP8cNJu1dqgCxB\">\u00c9quipe Cosmologie<\/span><\/li><li><a href=\"https:\/\/www.ias.universite-paris-saclay.fr\/annuaire?nom=puget\">Jean-Loup Puget<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fadb250 e-con-full e-flex e-con e-child\" data-id=\"fadb250\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5640f83 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5640f83\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pour aller plus loin :<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6323b3 elementor-widget elementor-widget-text-editor\" data-id=\"f6323b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"http:\/\/sci.esa.int\/planck\/\" target=\"_blank\" rel=\"noopener\">ESA Planck<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd77799 e-con e-atomic-element e-flexbox-base e-5a7e05f \" data-id=\"fd77799\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"fd77799\">\n    <div class=\"elementor-element elementor-element-3c46ec5 e-flex e-con-boxed e-con e-parent\" data-id=\"3c46ec5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4ca4523 elementor-widget elementor-widget-menu-anchor\" data-id=\"4ca4523\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"en-savoir-plus\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1e69ba7 elementor-widget elementor-widget-menu-anchor\" data-id=\"1e69ba7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"en-savoir-plus\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47e36f2 elementor-widget elementor-widget-heading\" data-id=\"47e36f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Planck High-Frequency Instrument (HFI)<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f9e816 e-con e-atomic-element e-flexbox-base e-4f9e816-2b01f01 \" data-id=\"4f9e816\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"4f9e816\">\n    \t\t<div class=\"elementor-element elementor-element-af124cd elementor-widget elementor-widget-text-editor\" data-id=\"af124cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Planck est un satellite de l&rsquo;Agence Spatiale Europ\u00e9enne (ESA) qui fournit des cartes de tout le ciel dans le domaine sub-millim\u00e9trique et radio (30 \u00e0 850 GHz), en temp\u00e9rature et en polarisation.\u00a0<\/p><p><strong>Objectifs scientifiques <\/strong><\/p><p>Planck a \u00e9t\u00e9 con\u00e7u dans le but de mesurer les anisotropies du fond de rayonnement cosmologique sur tout le ciel, avec une sensibilit\u00e9 et une r\u00e9solution angulaire jamais atteintes. Les donn\u00e9es de Planck fournissent des informations majeures dans plusieurs domaines de la cosmologie et de l&rsquo;astrophysique tels que les th\u00e9ories de l&rsquo;Univers primordial, l&rsquo;origine des grandes structures et la physique du milieu interstellaire.\u00a0<\/p><p><strong>Description technique <\/strong><\/p><p>Planck est compos\u00e9 de deux instruments : (1) le Low Frequency Instrument (LFI) &#8211; une matrice de r\u00e9cepteurs radio, utilisant la technologie des amplificateurs HEMT, qui observe dans le domaine de fr\u00e9quences comprises de 30 \u00e0 100 GHz; et (2) le High Frequency Instrument (HFI) &#8211; une matrice de bolom\u00e8tres refroidis \u00e0 100mK qui observe dans le domaine de fr\u00e9quences de 100 \u00e0 850 GHz.\u00a0<\/p><p>Planck a effectu\u00e9 un sondage de tout le ciel par p\u00e9riode de 6 mois. Des cartes du ciel entier \u00e0 haute r\u00e9solution angulaire (FWHM~5&prime;-30&prime;) et dans 9 bandes en fr\u00e9quence (30&#8211;850 GHz) ont \u00e9t\u00e9 mises \u00e0 disposition un an apr\u00e8s le fin de la mission. Cela procure \u00e0 la communaut\u00e9 scientifique une vision du ciel entier d&rsquo;une qualit\u00e9 jamais atteinte sur un domaine de fr\u00e9quences peu connu. Le grand domaine de fr\u00e9quences de Planck a \u00e9t\u00e9 choisi dans le but d&rsquo;optimiser la s\u00e9paration des \u00e9missions galactique, extra-galactique et du fond de rayonnement cosmologique.\u00a0<\/p><p><strong>\u00c9tat de la mission<\/strong><\/p><p>Les tests du mod\u00e8le de vol (Proto-Flight Model &#8211; PFM) de Planck-HFI ont eu lieu \u00e0 l&rsquo;IAS en juin-juillet 2006. Le lancement de Planck a eu lieu le 14 mai 2009. Planck a accompli sa mission avec succ\u00e8s. La derni\u00e8re commande de mise hors tension a \u00e9t\u00e9 envoy\u00e9e au satellite le 23 octobre 2013. Les membres du consortium Planck r\u00e9duisent, analysent et interpr\u00e8tent les donn\u00e9es activement.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Planck permet de fournir des r\u00e9ponses \u00e0 certaines des questions les plus importantes de la science moderne : comment l&rsquo;Univers a t-il commenc\u00e9, comment a t-il \u00e9volu\u00e9 vers l&rsquo;\u00e9tat que nous observons aujourd&rsquo;hui, et comment peut-il continuer \u00e0 \u00e9voluer dans le futur ?<\/p>\n","protected":false},"author":3,"featured_media":1524,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[9,6],"tags":[],"class_list":["post-1490","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projets-operation-spatiaux","category-projets-spatiaux"],"_links":{"self":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1490"}],"version-history":[{"count":32,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1490\/revisions"}],"predecessor-version":[{"id":3153,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1490\/revisions\/3153"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media\/1524"}],"wp:attachment":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}