korean english


Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 간단한 다과를 제공합니다.

                       아      래

Title: At the End of Space and Time: Imaging the Black Hole in M 87

Speaker: Prof. Sascha Trippe (서울대학교)

Date & Time: Nov. 20. (Wed.) 2019 4:30 PM

Place: Natural Science 1,  Room No. 31214

Abstract: Supermassive black holes are the power sources of active galactic nuclei. The central black hole of Messier 87 (M 87) has an angular diameter of about 8 micro-arcsec and, due to strong gravitational lensing, a photon ring angular diameter of about 40 micro-arcsec. This size can be resolved by global radio interferometric arrays observing at frequencies of 230 GHz or higher. In April 2017, the Event Horizon Telescope (EHT) observed the black hole in M 87 for several days. The resulting image shows an asymmetric photon ring which is fully consistent with the expectations from general relativity, as tested by comparison to a large library of models from general relativistic ray tracing.The black hole mass is found to be about 6.5 billion solar masses, in good agreement with previous estimates from stellar dynamics but inconsistent with previous estimates using gas dynamics. EHT observations of M 87 are supposed to continue in spring 2020 with several additional telescopes, possibly including SNU's SRAO.

번호 제목 날짜 조회 수
공지 2022학년도 1학기 콜로퀴움 일정 2022.01.10 3251
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 815709
355 <Mar.17(Wed.)> Glue spectrum for superconductivity obtained via optical spectroscopy 2021.03.10 16905
354 <Mar.24(Wed.)> A tale of quantum magnets 2021.03.18 18161
353 <Mar.10(Wed.)> Dark matter searches in neutrino detectors 2021.03.04 20706
352 <Nov.11(Wed.)>Nonlinear optics to study charge, spin, and crystalline structures 2020.11.04 20946
351 <Nov.18(Wed.)>When Physics meets the Living Cells 2020.11.11 22981
350 <Dec.2(Wed.)>The era of gravitational waves, and the science that makes it possible 2020.11.25 23200
349 <Nov.4(Wed.)>Progresses in Elucidating the Optoelectronic Properties of Perovskite Semiconductor 2020.10.28 25283
348 <Oct.28(Wed.)> Physics of Global Warming 2020.10.22 26017
347 <Dec.11(Wed.)>데이터 과학으로서의 물리학. 그리고 금융투자업 2019.12.04 27749
346 <Nov.13(Wed.)>The Science of Quark-Gluon Plasma 2019.11.06 31563
345 <Oct.7(Wed.)>Organic Photodiode for Image Sensor 2020.09.24 31799
344 <Oct.30(Wed.)> 왼손과 오른손, 기본 입자와 끈 2019.10.24 32830
343 <May.8(Wed.)> Genesis of Matter 2019.05.01 37392
342 <Oct.31(Wed.) 4:30 PM> 산업에서 활용되는 수학의 세계, 산업수학이란? 2018.10.22 37849
341 <Dec.4(Wed.)>2D materials based metasurfaces & THz near-field spectroscopy 2019.11.27 38371
340 <April.3(Wed.)> 전자구조계산을 이용한 새로운 양자물질 연구 2019.03.27 38698
339 <Oct.17(Wed.) 4:30 PM> CMS 실험에서의 Machine Learning활용 2018.10.12 39202
338 <April.10(Wed.)> 자성 반데르발스 물질 발견과 전망(Discovery and Perspective of magnetic van der Waals materials) 2019.04.04 39202
337 <April.18(Wed.) 4:30 PM>금속의'블랙스완' 2018.04.11 39407
336 <May.1(Wed.)> Introduction of AMS Application 2019.04.24 40059