{ "150108-21908018": { "datetime_modified":"20260922T064641", "datetime_start":"20260928T150000", "datetime_end":"20260928T160000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"HEP-Astro Seminar | Mapping the Dark Matter in the Milky Way with Stars: The Signal We Already Have", "occurrence_title":"", "combined_title":"HEP-Astro Seminar | Mapping the Dark Matter in the Milky Way with Stars: The Signal We Already Have: Lina Necib (MIT)", "event_subtitle":"Lina Necib (MIT)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Dark matter has so far revealed itself in exactly one way: through gravity. In this talk, I will argue that this makes the distribution of dark matter our only positive signal \u2014 and that mapping it precisely may be our most direct route to understanding what dark matter is. Galactic dynamics is no longer data-limited but model-limited, and the assumption most in need of revision, underlying nearly all of our models, is that galaxies are in equilibrium. I will present recent work leveraging Gaia DR3 that reveals a declining stellar rotation curve, show how underestimated errors in Jeans modeling bias these results, and how simulations let us build a more robust treatment that avoids tensions with other probes of the density profile. I will then turn to dwarf galaxies, where the kinematic data will not substantially improve and only better inference can extract the physics: I will present GraphNPE, a graph neural network method that recovers dark matter density profiles from sparse stellar kinematics, revealing a hint of a core in Bo\u00f6tes I, consistent with self-interacting dark matter. Finally, I will turn to the local velocity distribution, where the Milky Way's merger history imprints substructure that the Standard Halo Model does not capture, and use mutual information to show that this history is itself progressively erased from stellar dynamics \u2014 setting a fundamental limit on what the Galaxy can ever tell us. Together, these results outline a program of inference that assumes no more than the data supports and extracts no less than it contains, arriving just as Gaia DR4 and the next generation of spectroscopic surveys come online.", "occurrence_notes":null, "guid":"150108-21908018@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/150108", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"340", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["Science","Physics"], "website":"", "sponsors":[ { "group_name":"HEP - Astro Seminars", "group_id":"3799", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21908018 } , "152574-21913935": { "datetime_modified":"20260921T143302", "datetime_start":"20260928T150000", "datetime_end":"20260928T160000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Math Grad Show and Tell Seminar: Bessel Functions? More like Besssssel Functions, amirite?", "occurrence_title":"", "combined_title":"Math Grad Show and Tell Seminar: Bessel Functions? More like Besssssel Functions, amirite?: Kausik Das", "event_subtitle":"Kausik Das", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"What do ssssslithering snakes and spilling coffee have in common? A lot more than you might\u00a0think! Earlier this month, the Ig Nobel Prize honored quirky research results that \u201cfirst make\u00a0people laugh, and then make them think.\u201d In this talk, we will explore how special functions\u00a0known as Bessel functions unexpectedly appear in research done by Ig Nobel laureates. We will\u00a0center our mathematical analysis around the problems of limbless locomotion and walking while\u00a0holding a cup of coffee. The talk will also highlight the Ig Nobel prizes of this year as well as\u00a0other Ig Nobel oddities of mathematical interest!", "occurrence_notes":null, "guid":"152574-21913935@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152574", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Math Grad Show and Tell Seminar - Department of Mathematics", "group_id":"5515", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_152574_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/event_152574_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_152574_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_152574_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_152574_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_152574_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_152574_original-1.png" }, "occurrence_count":1, "first_occurrence":21913935 } , "152026-21912745": { "datetime_modified":"20260911T142906", "datetime_start":"20260928T153000", "datetime_end":"20260928T170000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"15:30:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Climate & Space (CLaSP) Open House - Reserve Your Tour!", "occurrence_title":"", "combined_title":"Climate & Space (CLaSP) Open House - Reserve Your Tour!: Monday September 28 | Tours at 3:30, 4:00, and 4:30 PM", "event_subtitle":"Monday September 28 | Tours at 3:30, 4:00, and 4:30 PM", "event_type":"Reception \/ Open House", "event_type_id":"17", "description":"Meet CLaSP faculty, staff, and students, tour our labs, explore our programs, and enjoy free food and swag!\n\n*** RSVP now for details, to reserve your tour spot, and help us plan for food: Google Form Link Here: https:\/\/forms.gle\/NSF8zYgPTo3UPyXy9 *** \n\nOpen to new, undecided, and curious undergraduates\u2014and ANYONE interested in our graduate programs, climate science, or space exploration!\n\nQuestions? Contact Heather at **hlwolf@umich.edu**. We hope to see you there!", "occurrence_notes":"Enter through the main entrance on Hayward Street. Take the stairs or elevator to the second-floor lobby and Leinweber Innovation Lab (CSRB 1236A), where the event will be held.", "guid":"152026-21912745@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152026", "building_id":"1000441", "building_name":"Climate and Space Research Building", "campus_maps_id":"643", "room":"Leinweber Innovation Lab (CSRB 1236A)", "location_name":"Climate and Space Research Building", "has_livestream":0, "cost":"", "tags":["Space","climate","Climate and Space Sciences and Engineering","climate change","College Of Engineering","Graduate School","Graduate Students","Majors","Sustainability","Undergraduate","Undergraduate Students"], "website":"https:\/\/clasp.engin.umich.edu\/", "sponsors":[ { "group_name":"Climate and Space Sciences and Engineering", "group_id":"3320", "website":"http:\/\/aoss.engin.umich.edu\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_152026_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/crop-event_152026_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21912745 } , "150985-21910665": { "datetime_modified":"20260923T132124", "datetime_start":"20260928T160000", "datetime_end":"20260928T170000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"BSI Information Sessions- Current U of M Students", "occurrence_title":"BSI Information Sessions- Current UM Students: F26#3", "combined_title":"BSI Information Sessions- Current U of M Students: BSI Information Sessions- Current UM Students: F26#3", "event_subtitle":"", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"We encourage every student interested in or contemplating an undergraduate degree at the School of Information to attend an information session. You will receive an engaging and comprehensive overview of the program, as well as guidance for the application process. Sessions are hosted on different days and times to accommodate as many students as possible, and you only need to attend one session before you apply.These information sessions are for students who area currently University of Michigan students.", "occurrence_notes":null, "guid":"150985-21910665@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/150985", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"Virtual", "has_livestream":0, "cost":"", "tags":["Sessions"], "website":"https:\/\/sessions.studentlife.umich.edu\/p\/track\/17724", "sponsors":[ { "group_name":"Sessions @ Michigan", "group_id":"4791", "website":"https:\/\/sessions.studentlife.umich.edu\/" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":7, "first_occurrence":21910665 } , "152174-21913177": { "datetime_modified":"20260922T090532", "datetime_start":"20260928T160000", "datetime_end":"20260928T170000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"ISRMT Seminar: Dispersive decay for the Modified Benjamin-Ono equation with small data", "occurrence_title":"", "combined_title":"ISRMT Seminar: Dispersive decay for the Modified Benjamin-Ono equation with small data: Allison Byars (University of North Carolina at Chapel Hill)", "event_subtitle":"Allison Byars (University of North Carolina at Chapel Hill)", "event_type":"Livestream \/ Virtual", "event_type_id":"24", "description":"Abstract: We study the modified Benjamin-Ono equation for small, localized initial data where no solitons arise. Unlike the standard Benjamin-Ono equation, the modified version is not known to be completely integrable, so we cannot rely on integrable systems tools. First, to manage the nonlocal Hilbert transform in the linear part of the equation, we split it using positive and negative frequency projections. We then combine wave packet testing of Ifrim and Tataru, the Klainerman\u2013Sobolev vector field method, a normal form transformation, and a bootstrap argument, to establish a global-in-time dispersive decay estimate.\n\n*To request access to the Zoom room, please contact Nathan Hayford at nhayford [ at ] umich.edu.*", "occurrence_notes":null, "guid":"152174-21913177@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152174", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"", "location_name":"Virtual", "has_livestream":0, "cost":"", "tags":["Mathematics","Virtual","seminar"], "website":"https:\/\/sites.google.com\/umich.edu\/isrmt-seminar\/", "sponsors":[ { "group_name":"Integrable Systems and Random Matrix Theory Seminar - Department of Mathematics", "group_id":"4893", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21913177 } , "151127-21910901": { "datetime_modified":"20260828T142508", "datetime_start":"20260928T160000", "datetime_end":"20260928T180000", "has_end_time":1, "date_start":"2026-09-28", "date_end":"2026-09-28", "time_start":"16:00:00", "time_end":"18:00:00", "time_zone":"America\/Detroit", "event_title":"Ottoman Greek Settlement in the Mitten State", "occurrence_title":"", "combined_title":"Ottoman Greek Settlement in the Mitten State: Presented by Dr. Yiorgos Topalidis, Flagler College", "event_subtitle":"Presented by Dr. Yiorgos Topalidis, Flagler College", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Dr. Topalidis will present the historical events surrounding the migration and settlement of Ottoman Greeks in Michigan. The lecture will contextualize these events through the lens of Social Memory Theory and emphasize the erasure of migrant and refugee identity writ large. To achieve this, the lecture will combine macro-level findings from extant scholarship with micro-level novel evidence from the Ottoman Greeks of the United States Digital History Project at Flagler College. \n\nThe lecture will cover the following subjects:\n\u2022\tThe displacement of Ottoman Greek migrants from their communities during World War I and the Greco-Turkish War.\n\u2022 Experiences of Ottoman Greek migrants fleeing from the cities of Izmir, Ordu, \u015eark\u00f6y, Semendire, and \u00dcrg\u00fcp.\n\u2022 Experiences of Ottoman Greeks during their settlement in Michigan.\n\u2022 Experiences of second- and third-generation descendants of Ottoman Greeks during their formative years in Michigan.\n\nDr. Yiorgo Topalidis received a doctorate in Sociology from the University of Florida in 2022. Yiorgo\u2019s research interests are emigration from the Ottoman Empire to the US and White identity construction, contestation, and transgenerational memory transfer. He is currently working on a monograph that explores the social construction of Ottoman Greek migrant identity in an early-20th-century U.S. context as a case study for decoupling Whiteness from White supremacist Whiteness.", "occurrence_notes":null, "guid":"151127-21910901@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151127", "building_id":"1", "building_name":"Angell Hall", "campus_maps_id":"12", "room":"2172 Angell Hall, Classical Studies Library", "location_name":"Angell Hall", "has_livestream":0, "cost":"", "tags":["Modern Greek","Classical Studies"], "website":"", "sponsors":[ { "group_name":"Classical Studies", "group_id":"1161", "website":"" }, { "group_name":"Modern Greek Program", "group_id":"3580", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/08\/event_151127_original-1.png", "styled_images":{ 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