A balloon-borne very long baseline interferometry experiment in the stratosphere: Systems design and developments

Akihiro Doi, Yusuke Kono, Kimihiro Kimura, Satomi Nakahara, Tomoaki Oyama, Nozomi Okada, Yasutaka Satou, Kazuyoshi Yamashita, Naoko Matsumoto, Mitsuhisa Baba, Daisuke Yasuda, Shunsaku Suzuki, Yutaka Hasegawa, Mareki Honma, Hiroaki Tanaka, Kosei Ishimura, Yasuhiro Murata, Reiho Shimomukai, Tomohiro Tachi, Kazuya SaitoNaohiko Watanabe, Nobutaka Bando, Osamu Kameya, Yoshinori Yonekura, Mamoru Sekido, Yoshiyuki Inoue, Hikaru Sakamoto, Nozomu Kogiso, Yasuhiro Shoji, Hideo Ogawa, Kenta Fujisawa, Masanao Narita, Hiroshi Shibai, Hideyuki Fuke, Kenta Uehara, Shoko Koyama

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The balloon-borne very long baseline interferometry (VLBI) experiment is a technical feasibility study for performing radio interferometry in the stratosphere. The flight model has been developed. A balloon-borne VLBI station will be launched to establish interferometric fringes with ground-based VLBI stations distributed over the Japanese islands at an observing frequency of approximately 20 GHz as the first step. This paper describes the system design and development of a series of observing instruments and bus systems. In addition to the advantages of avoiding the atmospheric effects of absorption and fluctuation in high frequency radio observation, the mobility of a station can improve the sampling coverage (“uv-coverage”) by increasing the number of baselines by the number of ground-based counterparts for each observation day. This benefit cannot be obtained with conventional arrays that solely comprise ground-based stations. The balloon-borne VLBI can contribute to a future progress of research fields such as black holes by direct imaging.

    Original languageEnglish
    Pages (from-to)779-793
    Number of pages15
    JournalAdvances in Space Research
    Volume63
    Issue number1
    DOIs
    Publication statusPublished - 2019 Jan 1

    Keywords

    • Balloon
    • Black holes
    • Interferometry
    • Radio astronomy
    • Radio telescopes
    • Satellite system

    ASJC Scopus subject areas

    • Aerospace Engineering
    • Space and Planetary Science

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  • Cite this

    Doi, A., Kono, Y., Kimura, K., Nakahara, S., Oyama, T., Okada, N., Satou, Y., Yamashita, K., Matsumoto, N., Baba, M., Yasuda, D., Suzuki, S., Hasegawa, Y., Honma, M., Tanaka, H., Ishimura, K., Murata, Y., Shimomukai, R., Tachi, T., ... Koyama, S. (2019). A balloon-borne very long baseline interferometry experiment in the stratosphere: Systems design and developments. Advances in Space Research, 63(1), 779-793. https://doi.org/10.1016/j.asr.2018.09.020