logo

korean english

게시판

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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1091803
276 <5/11> Hybrid Josephson Junctions of Various Nanostructures 2011.05.04 104973
275 <5/18> Three magics to hold an atom without perturbation 2011.05.09 101487
274 <5/25> 나노켈빈 원자 기체의 보즈-아인슈타인 응집 2011.05.18 85576
273 <6/1> Electron phonon coupling effect in 4d transition metal oxide magnetism 2011.05.26 107262
272 <6/8> 액체금속 및 물의 과냉각 현상과 국소구조와의 관계 : 정전기 공중부양 기술 및 dynamic diamond anvil cell 2011.06.07 112596
271 2011학년도 2학기 콜로퀴움 일정 안내 2011.08.22 89499
270 <9/7> 과학과 예술 (Science and Arts) 2011.08.30 81508
269 <9/21> Electronic phase transition in low dimensional SrTiO3/(Sr1-x,Lax)TiO3 oxide superlattices 2011.09.09 84961
268 <10/5> Acoustic Metamaterials and Reversal of Sound 2011.09.26 95487
267 <10/12> Introduction to the Proton Engineering Frontier Project 2011.10.10 81926
266 <10/26> 빛으로 보는 세상 2011.10.17 80133
265 <11/2> Color Science for Reflective mode Optical Shutter 2011.10.27 168572
264 <11/9> Bosons in high Tc superconductors: an experimental survey 2011.10.31 115412
263 <11/16> Study of carrier transport and charging effects in organic devices 2011.11.10 118322
262 <11/23> How statistical physics contributes to Internet world: perspectives, methods and applications 2011.11.15 93752
261 <11/30> 기능성 산화물의 현황과 응용 2011.11.24 80606
260 <12/7> Optical Antennas 2011.11.30 90225
259 2012학년도 1학기 콜로퀴움 일정 안내 [5] 2012.02.29 86205
258 <3/14> 시공간 왜곡과 우주론(Spacetime warp and Cosmology) 2012.03.07 79520
257 <3/21> 우주가속팽창의 원인 규명 2012.03.15 91263