{"690273":{"#nid":"690273","#data":{"type":"event","title":"CRA SEMINAR | Dr. Sreetama Goswami | UNLV  | Host: Prof. Nepomuk Otte","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ESpeaker:\u003C\/strong\u003E \u0026nbsp;Dr. Sreetama Goswami\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EHost: \u003C\/strong\u003EProf. Nepomuk Otte\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETitle:\u003C\/strong\u003E Search for Neutrino Emission from Promising Sources\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003Cbr\u003EThe source of most high-energy astrophysical neutrinos remains unknown. These neutrinos are expected to be produced in hadronic interactions within cosmic accelerators, which also generate high-energy gamma rays. However, no clear association has been established between neutrinos and gamma-ray\u2013bright sources yet.\u003C\/p\u003E\u003Cp\u003EInstead, environments that are opaque to gamma rays, where high-energy photons are absorbed and reprocessed, are the most likely source. Active Galactic Nuclei (AGN), particularly those with obscured cores, are among the most promising candidates in this class. In such systems, gamma rays undergo further interactions and decay into MeV gamma rays or hard X-rays, which is supported by the observed excess of neutrinos from hard X-ray detected AGN such as NGC 1068 and NGC 4151.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EIn this talk, I will present recent IceCube searches for neutrino emission from promising AGN populations, including Seyfert galaxies and hard X-ray\u2013selected AGN. I will also discuss the ongoing search focusing on highly obscured sources and the implications for identifying the dominant sources of the astrophysical neutrino flux.\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003Cbr\u003EThe source of most high-energy astrophysical neutrinos remains unknown. These neutrinos are expected to be produced in hadronic interactions within cosmic accelerators, which also generate high-energy gamma rays. However, no clear association has been established between neutrinos and gamma-ray\u2013bright sources yet.\u003C\/p\u003E\u003Cp\u003EInstead, environments that are opaque to gamma rays, where high-energy photons are absorbed and reprocessed, are the most likely source. Active Galactic Nuclei (AGN), particularly those with obscured cores, are among the most promising candidates in this class. In such systems, gamma rays undergo further interactions and decay into MeV gamma rays or hard X-rays, which is supported by the observed excess of neutrinos from hard X-ray detected AGN such as NGC 1068 and NGC 4151.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EIn this talk, I will present recent IceCube searches for neutrino emission from promising AGN populations, including Seyfert galaxies and hard X-ray\u2013selected AGN. I will also discuss the ongoing search focusing on highly obscured sources and the implications for identifying the dominant sources of the astrophysical neutrino flux.\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"CRA SEMINAR | Dr. Sreetama Goswami | UNLV  | Host: Prof. Nepomuk Otte"}],"uid":"30957","created_gmt":"2026-05-13 18:36:43","changed_gmt":"2026-05-13 18:41:24","author":"Shaun Ashley","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-05-21T15:30:00-04:00","event_time_end":"2026-05-21T16:30:00-04:00","event_time_end_last":"2026-05-21T16:30:00-04:00","gmt_time_start":"2026-05-21 19:30:00","gmt_time_end":"2026-05-21 20:30:00","gmt_time_end_last":"2026-05-21 20:30:00","rrule":null,"timezone":"America\/New_York"},"location":"College of Computing Building (CCB) Rm:103","extras":[],"hg_media":{"680272":{"id":"680272","type":"image","title":"Sreetama_Goswami-2.jpg","body":null,"created":"1778697567","gmt_created":"2026-05-13 18:39:27","changed":"1778697567","gmt_changed":"2026-05-13 18:39:27","alt":"Sreetama_Goswami-2.jpg","file":{"fid":"264518","name":"Sreetama_Goswami-2.jpg","image_path":"\/sites\/default\/files\/2026\/05\/13\/Sreetama_Goswami-2.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/05\/13\/Sreetama_Goswami-2.jpg","mime":"image\/jpeg","size":22544289,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/05\/13\/Sreetama_Goswami-2.jpg?itok=vykiv_ER"}}},"media_ids":["680272"],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}