Poster Presentation

Solar band observations at different azimuth angles

Author(s): Chia-Che Chang

Presenter: Chia-Che Chang (National Taitung University)

The BURSTT project was introduced to me during a workshop at the Institute of Astronomy, Academia Sinica, in the winter of 2025. After attending the workshop, I became intrigued by the use of instruments such as antennas, amplifiers, filters, and BladeRF to observe the Fast Radio Bursts (FRBs) in the BURSTT project. However, due to the challenging nature of observing FRBs, I focused my research on solar bands, which are more easily observable and have higher repeatability.
In this study, I first determined the solar position and then received signals through an antenna. After amplifying the signals with an amplifier, the BladeRF was used to obtain spectrum charts. I adjusted the antenna’s azimuth angle in increments of 5 degrees, ranging from true north to 85 degrees. After each adjustment, the spectrum charts revealed that specific frequencies varied with the angle. This allowed me to identify which signals corresponded to the solar bands. The results indicated that the frequency of 680Hz corresponded to the solar band, and the signal at this frequency was most prominent at an azimuth angle of 10 degrees, showing the strongest repeatability.