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SUMMARY:Atlantic GR Seminar: Sarah Muth (MUN)
DESCRIPTION:Marginally Outer Trapped (Open) Surfaces in 4+1 Dimensional Schwarzschild\nIn the case of binary black hole mergers\, the surface of most obvious interest\, the Event Horizon\, is often computationally difficult to locate. Instead\, it is useful to turn to quasi-local characterizations of black hole boundaries\, such as Marginally Outer Trapped Surfaces (MOTS)\, which are defined for a single time slice of the spacetime\, and the outer-most of which is the apparent horizon. In this talk\, I will describe ongoing work focused on understanding MOTS in the interior of a five-dimensional Schwarzschild black hole. Similar to the four-dimensional case previously studied\, we find examples of self-intersecting MOTS with an arbitrary number of self-intersections. This provides further support that self-intersecting behavior is rather generic. I will also briefly discuss the next stage of our research\, which involves further examples of these self-intersecting MOTS\, this time in the full Kruskal extension of Schwarzschild. \nThe Atlantic General Relativity 2020 online postdoc/student seminar series is in the tradition of the annual AGR meetings\, providing a forum not only for students and postdocs to present their research and make professional contacts but also to facilitate connections and collaborations between all Atlantic Canadian relativists. The series is student-organized and includes all areas of classical and quantum gravity. Talks will occur on the last Wednesday of every month\, with each session consisting of two 30 minute talks. If you would like to attend\, please email the organizers for connection details. \nNote: all times are Atlantic Time
URL:https://aarms.math.ca/event/atlantic-gr-seminar-2021-02-24/
LOCATION:Zoom seminar
CATEGORIES:Atlantic GR Seminars
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LAST-MODIFIED:20210224T014431Z
UID:5734-1614180600-1614184200@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr. Gary Gordon\, Lafayette College
DESCRIPTION:Permutations of finite subsets of R^2 generated by Euclidean distances\nGiven a finite set of points S = {P1\, P2\, . . . \, Pn} and a vantage point V\, generate an ordering of the points of S by measuring the Euclidean distance from V to each of the points of S\, ordering them from nearest to farthest. As the vantage point moves around the plane\, different orderings will be generated. We are interested in the maximum\, minimum\, and intermediate values achievable for different point-sets S. (Good and Tideman solved the maximum problem in all dimensions in the 1970s.) We also consider a generalization that uses two vantage points\, using the average distance (d(V1\, Pk) + d(V2\, Pk))/2 to the points of S to generate an ordering. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-02-24/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
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