자연과학부 물리학과 세미나 개최

자연과학부 물리학과 세미나 개최
PHY seminar
Hyung Mok Lee(5eoul Nati。nal University)
The gravitational waves were detected directlq for the first time on September lQ at 18:51 (Korean Standard-Time) twin LIGO detectors located at Livingston, Louisiana and Hanford, Washington near simultaneous!. This signal was initial! noticed b니
the detection software within 3 minutes of the arrival, but final
confirmation was made onl after’ !long and careful investigation of
the noise characteristics, shape of the signal and possible influence
of the environment. We finallq concluded that the detected waves
were produced during the last fraction of second of the inspiral and merger of a binar니 S니stem composed of two black holes of about 39 and 26 solar mass each, located at about 1.3 billion light 니ears . During this process, huge amount of energ corresponding to approximatel three times of solar mass in the form of gravitational waves has been radiated awaq, leaving a single black hole of about 62 solar mass behind. In this talk, I will briefl describe the nature of
gravitational waves, the principle of the LIGO detectors and their‘
sensitivities, and how actual detection was made. Then I will close m니 talk b니 commenting on the prospect of the gravitational wave astronom니 brought this detection.

2016년 03월 23일(수)

16:00
  • 장소 : 제1공학관 E104호
  • 담당부서 : 자연과학부
  • 담당자 : 김지향
  • 연락처 : 052-217-3603

자연과학부 물리학과는 3월 23일(수) 오후 4시, 제1공학관 E104호에서 세미나를 개최합니다. 서울대학교 이형목 교수가 강사로 나서 ‘중력파’를 주제로 특강을 펼칠 예정입니다.