These are radio images of the sun, which were obtained using the first ACA 12-m antenna manufactured by Japan. In these images, white color indicates strong intensity of radio waves, while darker color lower intensity. Since the pattern changes day by day, we can find that these images show the daily rotation and the surface structure of the sun. These high quality radio images were obtained by an observation for 20 minutes using the high-performance antenna.
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2025 4.17
Akimasa Kataoka Received the Young Scientists’ Award by MEXT
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Dr. Akimasa Kataoka at NAOJ received the Young Scientists’ Award, 2025 Commendation for Science and Technology by the M…
2025 4.15
Takafumi Tsukui Received Inoue Research Award for Young Scientists
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Takafumi Tsukui at the Australian National University (currently Tohoku University) received Inoue Research Award for Y…
2025 3.31
ACA Total Power Array Spectrometer Development Team Receives NAOJ Director General’s Award
The ACA Spectrometer development team has received the NAOJ Director General’s Award in the Technical and Development C…