Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM

Ryou Ohsawa; Shigeyuki Sako; Yuki Sarugaku; Fumihiko Usui; Takafumi Ootsubo; Yasunori Fujiwara; Mikiya Sato; Toshihiro Kasuga; Ko Arimatsu; Jun ichi Watanabe; Mamoru Doi; Naoto Kobayashi; Hidenori Takahashi; Kentaro Motohara; Tomoki Morokuma; Masahiro Konishi; Tsutomu Aoki; Takao Soyano; Ken'ichi Tarusawa; Yuki Mori; Yoshikazu Nakada; Makoto Ichiki; Noriaki Arima; Yuto Kojima; Masahiro Morita; Toshikazu Shigeyama; Yoshifusa Ita; Mitsuru Kokubo; Kazuma Mitsuda; Hiroyuki Maehara; Nozomu Tominaga; Takuya Yamashita; Shiro Ikeda; Mikio Morii; Seitaro Urakawa; Shin ichiro Okumura; Makoto Yoshikawa

doi:10.1016/j.pss.2018.09.006

Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM

Ryou Ohsawa, Shigeyuki Sako, Yuki Sarugaku, Fumihiko Usui, Takafumi Ootsubo, Yasunori Fujiwara, Mikiya Sato, Toshihiro Kasuga, Ko Arimatsu, Jun ichi Watanabe, Mamoru Doi, Naoto Kobayashi, Hidenori Takahashi, Kentaro Motohara, Tomoki Morokuma, Masahiro Konishi, Tsutomu Aoki, Takao Soyano, Ken'ichi Tarusawa, Yuki MoriYoshikazu Nakada, Makoto Ichiki, Noriaki Arima, Yuto Kojima, Masahiro Morita, Toshikazu Shigeyama, Yoshifusa Ita, Mitsuru Kokubo, Kazuma Mitsuda, Hiroyuki Maehara, Nozomu Tominaga, Takuya Yamashita, Shiro Ikeda, Mikio Morii, Seitaro Urakawa, Shin ichiro Okumura, Makoto Yoshikawa

SCI - Astronomy

Research output: Contribution to journal › Article

Abstract

Imaging observations of faint meteors were carried out on April 11 and 14, 2016 with a wide-field CMOS mosaic camera, Tomo-e PM, mounted on the 105-cm Schmidt telescope at Kiso Observatory, the University of Tokyo. Tomo-e PM, which is a prototype model of Tomo-e Gozen, can monitor a sky of ∼1.98deg² at 2 Hz. The numbers of detected meteors are 1514 and 706 on April 11 and 14, respectively. The detected meteors are attributed to sporadic meteors. Their absolute magnitudes range from +4 to +10mag in the V-band, corresponding to about 8.3×10⁻² to 3.3×10⁻⁴g in mass. The present magnitude distributions we obtained are well explained by a single power-law luminosity function with a slope parameter r=3.1±0.4 and a meteor rate log₁₀N₀=−5.5±0.5. The results demonstrate a high performance of telescopic observations with a wide-field video camera to constrain the luminosity function of faint meteors. The performance of Tomo-e Gozenis about two times higher than that of Tomo-e PM. A survey with Tomo-e Gozenwill provide a more robust measurement of the luminosity function.

Original language	English
Pages (from-to)	281-292
Number of pages	12
Journal	Planetary and Space Science
Volume	165
DOIs	https://doi.org/10.1016/j.pss.2018.09.006
Publication status	Published - 2019 Jan

Keywords

Interplanetary medium
Meteoroids
Meteors

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Ohsawa, R., Sako, S., Sarugaku, Y., Usui, F., Ootsubo, T., Fujiwara, Y., Sato, M., Kasuga, T., Arimatsu, K., Watanabe, J. I., Doi, M., Kobayashi, N., Takahashi, H., Motohara, K., Morokuma, T., Konishi, M., Aoki, T., Soyano, T., Tarusawa, K., ... Yoshikawa, M. (2019). Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM. Planetary and Space Science, 165, 281-292. https://doi.org/10.1016/j.pss.2018.09.006

Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM. / Ohsawa, Ryou; Sako, Shigeyuki; Sarugaku, Yuki; Usui, Fumihiko; Ootsubo, Takafumi; Fujiwara, Yasunori; Sato, Mikiya; Kasuga, Toshihiro; Arimatsu, Ko; Watanabe, Jun ichi; Doi, Mamoru; Kobayashi, Naoto; Takahashi, Hidenori; Motohara, Kentaro; Morokuma, Tomoki; Konishi, Masahiro; Aoki, Tsutomu; Soyano, Takao; Tarusawa, Ken'ichi; Mori, Yuki; Nakada, Yoshikazu; Ichiki, Makoto; Arima, Noriaki; Kojima, Yuto; Morita, Masahiro; Shigeyama, Toshikazu; Ita, Yoshifusa; Kokubo, Mitsuru; Mitsuda, Kazuma; Maehara, Hiroyuki; Tominaga, Nozomu; Yamashita, Takuya; Ikeda, Shiro; Morii, Mikio; Urakawa, Seitaro; Okumura, Shin ichiro; Yoshikawa, Makoto.

In: Planetary and Space Science, Vol. 165, 01.2019, p. 281-292.

Research output: Contribution to journal › Article

Ohsawa, R, Sako, S, Sarugaku, Y, Usui, F, Ootsubo, T, Fujiwara, Y, Sato, M, Kasuga, T, Arimatsu, K, Watanabe, JI, Doi, M, Kobayashi, N, Takahashi, H, Motohara, K, Morokuma, T, Konishi, M, Aoki, T, Soyano, T, Tarusawa, K, Mori, Y, Nakada, Y, Ichiki, M, Arima, N, Kojima, Y, Morita, M, Shigeyama, T, Ita, Y, Kokubo, M, Mitsuda, K, Maehara, H, Tominaga, N, Yamashita, T, Ikeda, S, Morii, M, Urakawa, S, Okumura, SI & Yoshikawa, M 2019, 'Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM', Planetary and Space Science, vol. 165, pp. 281-292. https://doi.org/10.1016/j.pss.2018.09.006

Ohsawa, Ryou ; Sako, Shigeyuki ; Sarugaku, Yuki ; Usui, Fumihiko ; Ootsubo, Takafumi ; Fujiwara, Yasunori ; Sato, Mikiya ; Kasuga, Toshihiro ; Arimatsu, Ko ; Watanabe, Jun ichi ; Doi, Mamoru ; Kobayashi, Naoto ; Takahashi, Hidenori ; Motohara, Kentaro ; Morokuma, Tomoki ; Konishi, Masahiro ; Aoki, Tsutomu ; Soyano, Takao ; Tarusawa, Ken'ichi ; Mori, Yuki ; Nakada, Yoshikazu ; Ichiki, Makoto ; Arima, Noriaki ; Kojima, Yuto ; Morita, Masahiro ; Shigeyama, Toshikazu ; Ita, Yoshifusa ; Kokubo, Mitsuru ; Mitsuda, Kazuma ; Maehara, Hiroyuki ; Tominaga, Nozomu ; Yamashita, Takuya ; Ikeda, Shiro ; Morii, Mikio ; Urakawa, Seitaro ; Okumura, Shin ichiro ; Yoshikawa, Makoto. / Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM. In: Planetary and Space Science. 2019 ; Vol. 165. pp. 281-292.

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abstract = "Imaging observations of faint meteors were carried out on April 11 and 14, 2016 with a wide-field CMOS mosaic camera, Tomo-e PM, mounted on the 105-cm Schmidt telescope at Kiso Observatory, the University of Tokyo. Tomo-e PM, which is a prototype model of Tomo-e Gozen, can monitor a sky of ∼1.98deg2 at 2 Hz. The numbers of detected meteors are 1514 and 706 on April 11 and 14, respectively. The detected meteors are attributed to sporadic meteors. Their absolute magnitudes range from +4 to +10mag in the V-band, corresponding to about 8.3×10−2 to 3.3×10−4g in mass. The present magnitude distributions we obtained are well explained by a single power-law luminosity function with a slope parameter r=3.1±0.4 and a meteor rate log10N0=−5.5±0.5. The results demonstrate a high performance of telescopic observations with a wide-field video camera to constrain the luminosity function of faint meteors. The performance of Tomo-e Gozenis about two times higher than that of Tomo-e PM. A survey with Tomo-e Gozenwill provide a more robust measurement of the luminosity function.",

keywords = "Interplanetary medium, Meteoroids, Meteors",

author = "Ryou Ohsawa and Shigeyuki Sako and Yuki Sarugaku and Fumihiko Usui and Takafumi Ootsubo and Yasunori Fujiwara and Mikiya Sato and Toshihiro Kasuga and Ko Arimatsu and Watanabe, {Jun ichi} and Mamoru Doi and Naoto Kobayashi and Hidenori Takahashi and Kentaro Motohara and Tomoki Morokuma and Masahiro Konishi and Tsutomu Aoki and Takao Soyano and Ken'ichi Tarusawa and Yuki Mori and Yoshikazu Nakada and Makoto Ichiki and Noriaki Arima and Yuto Kojima and Masahiro Morita and Toshikazu Shigeyama and Yoshifusa Ita and Mitsuru Kokubo and Kazuma Mitsuda and Hiroyuki Maehara and Nozomu Tominaga and Takuya Yamashita and Shiro Ikeda and Mikio Morii and Seitaro Urakawa and Okumura, {Shin ichiro} and Makoto Yoshikawa",

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T1 - Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM

AU - Ohsawa, Ryou

AU - Sako, Shigeyuki

AU - Sarugaku, Yuki

AU - Usui, Fumihiko

AU - Ootsubo, Takafumi

AU - Fujiwara, Yasunori

AU - Sato, Mikiya

AU - Kasuga, Toshihiro

AU - Arimatsu, Ko

AU - Watanabe, Jun ichi

AU - Doi, Mamoru

AU - Kobayashi, Naoto

AU - Takahashi, Hidenori

AU - Motohara, Kentaro

AU - Morokuma, Tomoki

AU - Konishi, Masahiro

AU - Aoki, Tsutomu

AU - Soyano, Takao

AU - Tarusawa, Ken'ichi

AU - Mori, Yuki

AU - Nakada, Yoshikazu

AU - Ichiki, Makoto

AU - Arima, Noriaki

AU - Kojima, Yuto

AU - Morita, Masahiro

AU - Shigeyama, Toshikazu

AU - Ita, Yoshifusa

AU - Kokubo, Mitsuru

AU - Mitsuda, Kazuma

AU - Maehara, Hiroyuki

AU - Tominaga, Nozomu

AU - Yamashita, Takuya

AU - Ikeda, Shiro

AU - Morii, Mikio

AU - Urakawa, Seitaro

AU - Okumura, Shin ichiro

AU - Yoshikawa, Makoto

PY - 2019/1

Y1 - 2019/1

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KW - Meteoroids

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