Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2503.06668 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866912266889199616 |
|---|---|
| author | Nakamori, Takeshi Hashiyama, Kazuaki Sato, Rin Shoji, Masayoshi Sato, Anju Ono, Eiji Ouchi, Yuga Nakaoka, Tatsuya Kawabata, Koji S. Terasawa, Toshio Misawa, Hiroaki Tsuchiya, Fuminori Takefuji, Kazuhiro Murata, Yasuhiro Takei, Dai Ueno, Kazuki Akitaya, Hiroshi |
| author_facet | Nakamori, Takeshi Hashiyama, Kazuaki Sato, Rin Shoji, Masayoshi Sato, Anju Ono, Eiji Ouchi, Yuga Nakaoka, Tatsuya Kawabata, Koji S. Terasawa, Toshio Misawa, Hiroaki Tsuchiya, Fuminori Takefuji, Kazuhiro Murata, Yasuhiro Takei, Dai Ueno, Kazuki Akitaya, Hiroshi |
| contents | We have developed an optical photon-counting imaging system, IMONY, as an instrument for short-scale time-domain astronomy. In this study, we utilized a Geiger avalanche photodiode array with a $4\times 4$ pixel configuration, with each pixel measuring \SI{100}{\micro m}. We developed a dedicated analog frontend board and constructed a data acquisition system with an FPGA to time-stamp each photon with a time resolution of \SI{100}{\ns}. We mounted a prototype model of the system on the 1.5-m Kanata telescope, intending to observe the Crab pulsar and conduct joint observations with Iitate and Usuda radio telescopes in Japan. We successfully demonstrated that IMONY could image the Crab pulsar as an expected point source and acquire the well-known pulse shape. We found that the time lag between the optical and radio main pulses was $304\pm$\SI{35}{μs}, consistent with previous studies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_06668 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optical photon-counting observation of the Crab pulsar with Kanata telescope using prototype IMONY Nakamori, Takeshi Hashiyama, Kazuaki Sato, Rin Shoji, Masayoshi Sato, Anju Ono, Eiji Ouchi, Yuga Nakaoka, Tatsuya Kawabata, Koji S. Terasawa, Toshio Misawa, Hiroaki Tsuchiya, Fuminori Takefuji, Kazuhiro Murata, Yasuhiro Takei, Dai Ueno, Kazuki Akitaya, Hiroshi Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena We have developed an optical photon-counting imaging system, IMONY, as an instrument for short-scale time-domain astronomy. In this study, we utilized a Geiger avalanche photodiode array with a $4\times 4$ pixel configuration, with each pixel measuring \SI{100}{\micro m}. We developed a dedicated analog frontend board and constructed a data acquisition system with an FPGA to time-stamp each photon with a time resolution of \SI{100}{\ns}. We mounted a prototype model of the system on the 1.5-m Kanata telescope, intending to observe the Crab pulsar and conduct joint observations with Iitate and Usuda radio telescopes in Japan. We successfully demonstrated that IMONY could image the Crab pulsar as an expected point source and acquire the well-known pulse shape. We found that the time lag between the optical and radio main pulses was $304\pm$\SI{35}{μs}, consistent with previous studies. |
| title | Optical photon-counting observation of the Crab pulsar with Kanata telescope using prototype IMONY |
| topic | Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2503.06668 |