ハビタブル系外惑星探査のための高コントラスト撮像技術の開発

Naoshi Murakami（村上 尚史）
北海道大学

It is challenging to directly image exoplanets, especially Earth-like planets in habitable zones, due to a huge brightness ratio between bright central star and faint exoplanet. The ratio would reach 1E+10 assuming, for example, a search for our Earth around the Sun by aliens from outside the solar system. It is necessary to develop high-contrast imaging technology for strongly rejecting bright starlight to directly image exoplanets. Recently, we have constructed two laboratory testbeds named "FACET" and "EXIST" where novel optical devices and methodology are being developed toward future space-based coronagraphs to search for habitable exoplanets. In my talk, I will describe difficulties for direct imaging of habitable exoplanets, summarize key techniques for the high-contrast imaging envisioned for future coronagraphs, and introduce our recent activities carried out at the testbeds FACET and EXIST.

Via Zoom / zoom 開催