Imaging Black Hole Shadow of M87 with the Event Horizon Telescope

Shiro Ikeda

Presentation information

[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI39] Data-driven geosciences

convener:Tatsu Kuwatani(Japan Agency for Marine-Earth Science and Technology), Hiromichi Nagao(Earthquake Research Institute, The University of Tokyo), Kenta Ueki(Japan Agency for Marine-Earth Science and Technology), Shin-ichi Ito(The University of Tokyo)

[MGI39-06] Imaging Black Hole Shadow of M87 with the Event Horizon Telescope

★Invited Papers

*Shiro Ikeda¹ (1.The Institute of Statistical Mathematics)

Keywords:interferometer, black hole shadow

On 10 April 2019, in six coordinated press conferences around the world, the first result of the Event Horizon Telescope (EHT) collaboration was released: The shadow of the supermassive black hole of the elliptical galaxy M87. The EHT is a radio interferometer that combines different radio telescopes. In order to have an image, interferometers need a computational process called “imaging.” We have developed two imaging platforms for the EHT and one of them was made by our Japanese group including me. We have utilized “sparse modeling” for our imaging method. In this talk, we will show how the image was computed.