3 papers
astro-ph.HE2024
An independent hybrid imaging of Sgr A* from the data in EHT 2017 observations
Makoto Miyoshi, Yoshiaki Kato, Junichiro Makino
We propose that the ring structure found by the Event Horizon Telescope Collaboration (EHTC) as the black hole shadow of Sgr A*is an artifact by the bumpy PSF (Point Spread Functio…
astro-ph.IM2024
JASMINE image simulator for high-precision astrometry and photometry
Takafumi Kamizuka, Hajime Kawahara, Ryou Ohsawa +23
JASMINE is a Japanese planned space mission that aims to reveal the formation history of our Galaxy and discover habitable exoEarths. For these objectives, the JASMINE satellite pe…
astro-ph.IM2024
Black hole ring images from PSF structures
Makoto Miyoshi, Yoshiaki Kato, Junichiro Makino
Two critical aspects of radio interferometric imaging analysis are data calibration and deconvolution of the point spread function (PSF) structure. Both of these are particularly i…