Sep 8 – 13, 2019
Europe/Rome timezone
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Multiple Image X-ray Interferometer Modules (MIXIM) and their Scalable Mission Plans from Sub-arcsecond to Subsub-arcsecond Resolution X-ray Images

Sep 12, 2019, 6:05 PM
15m
Contributed FUTURE MISSIONS

Speaker

Prof. Kiyoshi Hayashida (Osaka University)

Description

We have invented a new type of X-ray interferometers, MIXIM, which simply consists of a grating (multiple slits) and a pixel detector. This configuration provides X-ray images as multiple slit camera can do. If we employ a grating of a pitch d of 5micrometer, and opening fraction f of 0.2 separated from the detector by the distance z of 50cm, we expect the image width of 0.4’’. It suggests that Chandra resolution is possible with very small satellites. In reality, diffraction blurrs the image significantly. Nevertheless, by selecting X-ray events of which X-ray energy satisfies the Talbot interference condition, we expect a sharp image of the X-ray light source convolved with the multiple slits(Hayashida+2016).
We irradiated parallel X-ray beam to our MIXIM system and succeeded in obtaining the image of the source of which image width corresponding to sub-arcsecond(Hayashida+2018). We show the latest experimental results, including the best image width of 0.26’’ for z of 184 cm and 0.55’’ with z of 46 cm, and the reasonable band width of the MIXIM of 10%. Our first motivation of the MIXIM is for very small satellites. We, however, show the MIXIM is scalable in terms of z and d. MIXIM with z of 10 m (parasites to typical X-ray observatory) can go 0.1’’. MIXIM with z of 100 m (formation flights) can go 0.01’’ resolution, comparable to ALMA. MIXIM can be a realistic approach to obtain high spatial resolution X-ray images of bright almost-point-like sources, such as nearby AGNs, alternative to ultra high precision and expensive X-ray mirrors developed by authors.

Affiliation Osaka University
Topic Future missions

Primary authors

Prof. Kiyoshi Hayashida (Osaka University) Mr Takashi Hanasaka (Osaka University) Kazunori Asakura (Osaka University) Tomokage Yoneyama (Osaka University) Hirofumi Noda (Osaka University) Mr Koki Okazaki (Osaka University) Mr Shuntaro Ide (Osaka University) Ms Ayami Ishikura (Osaka University) Mr Kengo Hattori (Osaka University) Prof. Hironori Matsumoto (Osaka University) Dr Hiroshi Nakajima (Kanto Gakuin University) Prof. Hisamitsu Awaki (Ehime University) Prof. Hiroshi Tsunemi (Osaka University)

Presentation materials