{"id":19242,"date":"2026-04-17T14:13:30","date_gmt":"2026-04-17T06:13:30","guid":{"rendered":"https:\/\/www.es.ntnu.edu.tw\/?p=19242"},"modified":"2026-04-17T14:13:32","modified_gmt":"2026-04-17T06:13:32","slug":"colloquium-21-apr-2026-prof-sut-leng-tam","status":"publish","type":"post","link":"https:\/\/www.es.ntnu.edu.tw\/index.php\/en\/2026\/04\/17\/colloquium-21-apr-2026-prof-sut-leng-tam\/","title":{"rendered":"Colloquium 21\/Apr\/2026 Prof. Sut-Leng Tam"},"content":{"rendered":"\n<p><strong>Speaker: Prof. Sut-Leng Tam \u8b5a\u96ea\u7469<\/strong> (Institute of Physics, NYCU)<\/p>\n\n\n\n<p><strong>Title: Using Gravitational Lensing to Study Dark Matter in our Universe<\/strong><\/p>\n\n\n\n<p>Time: 02:20pm\u00a0Tuesday 21\/Apr\/2026<\/p>\n\n\n\n<p>Venue: Room S101, 1F, Lecture Hall (G112)<\/p>\n\n\n\n<p>Abstract:<\/p>\n\n\n\n<p>In the standard cosmological model, the matter content of the Universe is dominated by dark matter\u2014an invisible component that governs the formation and evolution of cosmic structures. While dark matter cannot be observed directly, its gravitational influence can be detected through the deflection of light from background sources, a phenomenon known as gravitational lensing. In this\u00a0talk, I will introduce the gravitational lensing effect in galaxy clusters and explain how it serves as a powerful probe for detecting dark matter and constraining its physical properties. I will also present a new approach by using radial acceleration relation to constrain the dark matter self-interacting cross-section.\u00a0<\/p>\n\n\n\n<p>Tea time will be hosted after the talk in room S801<br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Speaker: Prof. Sut-Leng Tam \u8b5a\u96ea\u7469 (Institute of Physics,  [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[80,51],"tags":[],"class_list":["post-19242","post","type-post","status-publish","format-standard","hentry","category-dept-en","category-news-en","entry"],"_links":{"self":[{"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/posts\/19242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/comments?post=19242"}],"version-history":[{"count":2,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/posts\/19242\/revisions"}],"predecessor-version":[{"id":19247,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/posts\/19242\/revisions\/19247"}],"wp:attachment":[{"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/media?parent=19242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/categories?post=19242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.es.ntnu.edu.tw\/index.php\/wp-json\/wp\/v2\/tags?post=19242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}