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저자 : 한국천문학회 | 등록일시 : 2024-07-22 11:25:17 | |||||||||
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안녕하십니까. 오는 수요일(7월 24일) 오후 4:00에 아래와 같이
2024년 상반기 정규 콜로키움이 진행될 예정입니다. 발표 후에는 연사와의 대화시간(5:00-5:40)
및 저녁 식사가 예정되어 있으니 많은 참여 부탁드립니다. 발표자: Dr. Maciej Wielgus (Max Planck Institute for
Radioastronomy, Bonn, Germany) 호스트: 손봉원 장소: 장영실홀
331-2 및 원격 연결 일시: 7월 24일 (수) 오후 4:00 접속주소: https://zoom.us/j/92444602963?pwd=VXJzWE1zd3VkYmZ1SjRMeXRFQy9kQT09 교육학점: 천문연 소속 현장참석자의 경우 필수 0.5 학점 부여 제목: Studying black holes with space VLBI 초록: Photons looping around photon shells
in black hole spacetimes form a sequence of higher order images -- the
photon ring. Unlike in the case of the direct image, the size and shape of
the photon ring reflects properties of spacetime, aka "clean
geometry" with only limited impact of the configuration of the
emitting source, aka "dirty astrophysics". Thus, they enable
unprecedented robust observational tests of strong gravity, possibly
including estimates of black hole spin, or constraining deviations from
the Kerr metric. For at least 1 black hole in the Universe, M87*, the
photon ring can be characterized with space radiointeferometry at mm
wavelengths. I will talk about the ongoing plans and efforts to do it in
the next decade with the proposed NASA Black Hole EXplorer (BHEX) space
VLBI mission. 진행언어: 영어 슬라이드언어: 영어 원격 접속 방법 : A. 웹 브라우저: Chrome을 추천하며 아래 주소를 실행시
Zoom 구동을 위한 프로그램이 설치될 수 있음 B. 접속 주소: https://zoom.us/j/92444602963?pwd=VXJzWE1zd3VkYmZ1SjRMeXRFQy9kQT09 C. 유의사항: 접속 후
"마이크는 뮤트로 설정"
- 기본설정은 뮤트로 되어있음
> 질의 응답시간에는 마이크를 사용해서 질문 가능함 2024년 상반기 천문연구원 콜로키움 일정 https://www.kasi.re.kr/kor/publication/post/notice/29938 (위 일정은 연사분의 상황에 따라서 변경될 수 있습니다.) 천문연 콜로키움 위원회 (김종수, 선광일, 이창원, 문홍규, 노혜림, 한정열) 운영위원회 (김진호, 송영범, 오재석, 윤용민, 조영수, 홍경수) ---------- Dear all, The KASI's regular colloquium is scheduled at Jul. 24, as shown below. A conversation session with speakers
and dinner are scheduled after the colloquium. Speaker: Dr. Maciej Wielgus (Max
Planck Institute for Radioastronomy, Bonn, Germany) Host: Bong Won Sohn Place: Jang Yeong-sil Hall 331-2 & Online Time: July 24 (Wed) 4:00 pm Access: https://zoom.us/j/92444602963?pwd=VXJzWE1zd3VkYmZ1SjRMeXRFQy9kQT09 KASI Educational credits: 0.5
educational credits are awarded to off-line attendees. Title: Studying black holes with
space VLBI Abstract: Photons looping around photon shells
in black hole spacetimes form a sequence of higher order images -- the photon
ring. Unlike in the case of the direct image, the size and shape of the photon
ring reflects properties of spacetime, aka "clean geometry" with only
limited impact of the configuration of the emitting source, aka "dirty
astrophysics". Thus, they enable unprecedented robust observational tests
of strong gravity, possibly including estimates of black hole spin, or
constraining deviations from the Kerr metric. For at least 1 black hole in the
Universe, M87*, the photon ring can be characterized with space
radiointeferometry at mm wavelengths. I will talk about the ongoing plans and
efforts to do it in the next decade with the proposed NASA Black Hole EXplorer
(BHEX) space VLBI mission. Language: English Slide Language: English Remote access procedure: A. Web browser: Chrome - When
executing the address below, a program for additional zoom operation can be
installed. B. Access: Go to https://zoom.us/j/92444602963?pwd=VXJzWE1zd3VkYmZ1SjRMeXRFQy9kQT09 C. Notice: After join, Please mute
your microphone. - The default setting is microphone mute. > After the
presentation, during the Q&A session, you can use the microphone to ask
questions. 2024A KASI Colloquium Schedule https://www.kasi.re.kr/kor/publication/post/notice/29938 (This schedule may vary depending on
the speakers' schedule.) KASI Colloquium committee (Jongsoo
Kim, Kwang-Il Seon, Chang Won Lee, Hong-Kyu Moon, Hyerim Noh, Jeong-Yeol Han) Working committee (Jinho Kim,
Youngbum Song, Jae Sok Oh, Yongmin Yoon, Youngsoo Jo, Kyeongsoo Hong) |
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이전글 | 천문학회 오픈콜로퀴움 -경북대학교 밤하늘이야기 공개강연 |
다음글 | [KASI Colloquium] Jul. 31 (Wed.) 4:00 pm - 지명국 교... |