Seeing Dark Matter with Gravitational Waves - 물리천문학부 천문학전공

Colloquium

Astronomy Colloquium (2019 Spring Semester)

* Date: April 18
* Speaker: Prof. Sunghoon Jung (SNU)
* Title: Seeing Dark Matter with Gravitational Waves
* Abstract

What can we learn about Dark Matter frontier with Gravitational-Wave (GW) observations at LIGO and future detectors? GW is a new eye to the Universe that can help us find out the identity of dark matter, one of the biggest mysteries of the Universe.

We first introduce a new GW observable — GW Fringe — that allows LIGO alone to probe the compact type of dark matter such as primordial black holes or dark stars. We further discuss that LIGO can make synergies with mid-frequency detectors so that the broadband measurement can probe various other dark matter kinds in other new ways. Such dark matter candidates include fuzzy axion-like dark matter and cosmic strings. The capability of ideal localization is a bonus of such broadband detection. All these new opportunities utilize the unique chirping nature of GWs from binary mergers.

The new opportunities can not only strengthen LIGO science capabilities, but also motivate future mid-frequency detection. Most importantly, they are precious new ways to understand the particle-physics nature of dark matter via the new eye that became finally available today — GW.

Date	Speaker	Title	Remarks
March 7	No Colloquium	OT to the Seminar Course
March 14	Dr. Ena Choi (Columbia Unv.)	Making Massive Elliptical Galaxies
March 21	KASI ALMA TEAM	ALMA Cycle-7 proposal Townhall meeting
March 28	Prof. Changbom Park (KIAS)	Cosmology with Large-scale Structures in the Universe
April 4	Prof. Masateru Ishiguro (SNU)	Hirayama Family and Exploration of Asteroids
April 11	No colloquium	Korean Astronomical Society Spring Meeting
April 18	Prof. Sunghoon Jung (SNU)	Seeing Dark Matter with Gravitational Waves
April 25	Dr. Z. Lucas Uhm (KASI)	Physics of Relativistic Jets in Gamma-ray Bursts in the New Era of Multi-messenger Astrophysics
May 2	Prof. Jeong-Eun Lee (Kyung Hee Univ.)	Chemistry in Star and Planet Formation	Speech in Korean
May 9	Dr. Masa Imanishi (NAOJ)	ALMA reveals a rotating dense molecular torus in NGC 1068
May 16	Dr. Pei-Ying Hsieh (ASIAA)	The Role of the Magnetic Field in the Circumnuclear Disk of the Galactic Center – Implications From 850 micron Polarization Data
May 23	Prof. Sascha Trippe (SNU)	At the End of Space and Time: Imaging the Black Hole in M 87	Special colloquium on the recent result of the Event Horizon Telescope (EHT)
May 30	Naeun Shin (SNU)	대학원생이 바라본 해외교육지원단 3기 원정대 활동
June 6	No colloquium	Memorial Day
June 13	Dr. Shinsuke Takasao (NAGOYA Univ.)	Investigating the accretion process onto young stars using 3D MHD simulations

2019 Spring semester detail