The Next-Generation Small-Body Sample Return: Comet Exploration Mission to Unveil the Origin of the Solar System, Ohsawa, R., Kurokawa, H., Shimaki, Y., Sakatani, N., Fukai, R., Tatsumi, E., Aoki, J., Kebukawa, Y., Next Generation Small Body Sample Return Mission Science Team, Japan Geoscience Union Meeting 2023, Makuhari Messe, Chiba, Japan, 2023/05/21–2020/05/26 (oral)
Near-Earth Asteroid Survey with Tomo-e Gozen, Ohsawa, R., Beniyama, J., Sako, S., Urakawa, S., Okumura, S., Watanabe, J., Yoshikawa, M., Morokuma, T., Japan Geoscience Union Meeting Online 2020, Online, 2020/07/12–2020/07/16 (poster)
Radar and optical simultaneous observations of faint meteors with MU radar and Tomo-e Gozen, Ohsawa, R., Hirota, A., Morita, K., Abe, S., Kastinen, D., Kero, J., Fujiwara, Y., Nakamura, T., Sako, S., Kojima, Y., et al., Meteoroids 2019, Bratislava, Slovakia, 2019/06/17–2019/06/21 (oral)
Radar and optical simultaneous observations of faint meteors with MU radar and Tomo-e Gozen, Ohsawa, R., Hirota, A., Abe, S., Kastinen, D., Kero, J., Fujiwara, Y., Nakamura, T., Sako, S., Kojima, Y., Watanabe, J., Japan Geoscience Union Meeting 2019, Makuhari Messe, Chiba, Japan, 2019/05/26–2019/05/30 (poster)
Slow-Scanning with Subaru/COMICS, Ohsawa, R., The Next Generation of Thermal-IR Astronomy: How can we Reach the Photon Noise Limit?, Lorentz Center, Leiden, Netherlands, 2018/11/12–2018/11/16 (oral, invited)
Optical Observations of Faint Meteors with a Wide-Field CMOS Camera Tomo-e Gozen, Ohsawa, R., Sako, S., Shigeyama, T., Doi, M., Motohara, K., Morokuma, T., Kobayashi, N., Tominaga, N., Tanaka, M., Tomo-e Gozen Project Team, The 45th Annual European Meeting on Atmospheric Studies by Optical Methods, Institutet f"or rymdfysik, Kiruna, Sweden, 2018/08/27–2018/08/31 (oral, invited)
Video Observations of Faint Meteors with Tomo-e PM, Ohsawa, R., Sako, S., Sarugaku, Y., Usui, F., Ootsubo, T., Fujiwara, Y., Sato, M., Kasuga, T., Arimatsu, K., Watanabe, J., et al., Japan Geoscience Union Meeting 2018, Makuhari Messe, Chiba, Japan, 2018/05/20–2018/05/24 (poster)
All Sky Survey and Meteor Observations with Tomo-e Gozen, Ohsawa, R., 9th Workshop on Catastrophic Disruption in the Solar System, Ikuta Shrine, Hyogo, Japan, 2018/05/14–2018/05/17 (oral)
Observations of Faint Meteors with a Wide-field CMOS Camera, Ohsawa, R., PERC International Symposium on Dust \& Parent Bodies 2018, Chiba Institute of Technology, Chiba, Japan, 2018/02/26–2018/02/28 (oral)
Ground-based observations of PAHs in PNe, Ohsawa, R., Subaru Planetary Nebula Workshop 2017, HKU, Hong Kong, 2017/12/11–2017/12/13 (oral)
MIMIZUKU: a ground-based instrument for a precise photometry in mid-infrared, Ohsawa, R., Dynamic Infrared Sky, Caltech, Pasadena, USA, 2017/09/18–2017/09/20 (oral)
Contributions to Observations of Near-Earth Objects by a Wide-Field CMOS Camera Tomo-e Gozen, Ohsawa, R., Sako, S., Doi, M., Kobayashi, N., Usui, F., Watanabe, J., Arimatsu, K., Urakawa, S., Okumura, S., Yoshikawa, M., et al., International Academy of Astronautics Planetary Defense Conference 2017, Miraikan, Tokyo, Japan, 2017/05/15–2017/05/19 (oral)
Development of a Wide-Field CMOS Camera: Tomo-e Gozen and Contributions to EM Follow-up Observations of Gravitational Wave Events, Ohsawa, R., Sako, S., Shigeyama, T., Doi, M., Motohara, K., Morokuma, T., Kobayashi, N., Tominaga, N., Tanaka, M., Tomo-e Gozen Project Team, Gravitational Wave Physics and Astronomy Workshop 2017, Annecy, France, 2017/05/30–2017/06/02 (poster)
Development of a real-time data processing system for a prototype of the Tomo-e Gozen wide field CMOS camera, Ohsawa, R., Sako, S., Takahashi, H., Kikuchi, Y., Doi, M., Kobayashi, N., Aoki, T., Arimatsu, K., Ichiki, M., Ikeda, S., et al., SPIE 9913, Software and Cyberinfrastructure for Astronomy IV, Edinburgh, United Kingdom, 2016/06/26–2016/07/01 (poster)
Development of Extreme Wide-Field CMOS Camera Tomo-e: Contribution to Gravitational Wave/EM Counterparts Search, Ohsawa, R., Sako, S., Kikuchi, Y., Doi, M., Motohara, K., Morokuma, T., Kobayashi, N., Tominaga, N., Tanaka, M., Tomo-e Gozen Project Team, Gravitational Wave Physics and Astronomy Workshop 2016, Hyannis, Massachusetts, USA, 2016/06/15–2016/06/18 (poster)
Impact of the initial disk mass function on the disk fraction, Ohsawa, R., Onaka, T., Yasui, C., International Workshop on “Exoplanets and Disks: Their Formation and Diversity III”, Ishigaki, Japan, 2016/02/21–2016/02/24 (oral)
Near-Infrared Views of Dust in Planetary Nebulae: AKARI/IRC NIR Spectral Atlas of Galactic PNe, Ohsawa, R., Onaka, T., Sakon, I., Yamamura, I., Mori, T. I., Matsuura, M., Kaneda, H., The 11th Pacific Rim Conference on Stellar Astrophysics, Hong Kong, PR China, 2015/12/14–2015/12/17 (poster)
Development of Extremely Wide-Field CMOS Camera Tomo-e for Follow-up Observations of GW Counterparts, Ohsawa, R., Sako, S., Kikuchi, Y., Doi, M., Motohara, K., Morokuma, T., Kobayashi, N., Miyata, T., Aoki, T., Soyano, T., et al., Gravitational Wave Physics and Astronomy Workshop (GWPAW) 2015, Osaka, Japan, 2015/06/17–2015/06/20 (poster)
Current Status of Tomo-e Project: Development of Kiso Wide-Field CMOS Camera, Ohsawa, R., Sako, S., Morokuma, T., Tomo-e Project Team, 3rd Annual Symposium of the Innovative Area on Multi-messenger Study of Gravitational Wave Sources, Hiroshima University, Japan, 2015/02/19–2015/02/21 (oral)
Development of the Mid-Infrared Data-Reduction Method without Chopping using COMICS Archive Data, Ohsawa, R., Subaru Users Meeting 2014, NAOJ, Japan, 2015/01/13–2015/01/15 (poster)
Gas and PAH distributions in the compact \scshape Hii Region, M 1-78, Ohsawa, R., Onaka, T., Sakon, I., Mori, T. I., Kaneda, H., International Conference on Interstellar Dust, Molecules and Chemistry, Tezpur, India, 2014/12/15–2014/12/18 (poster)
Near-Infrared PAH features in Galactic Planetary Nebulae, Ohsawa, R., Onaka, T., Sakon, I., Mori, T. I., Yamamura, I., Kaneda, H., Matsuura, M., The Universe in the Light of AKARI and Synergy with future Large Space Telescopes, Oxford, UK, 2014/07/09–2014/07/14 (oral)
Evolution of Planetary Nebulae and PAH features, Ohsawa, R., Onaka, T., Sakon, I., Mori, T. I., Yamamura, I., Matsuura, M., Kaneda, H., Joblin, C., Bern'e, O., Bernard-Salas, J., The Life Cycle of Dust in the Universe: Observations, Theory, and Laboratory Experiments, ASIAA, Taiwan, 2013/11/18–2013/11/22 (poster)
Evolution of dust emission around PNe, from AKARI/Spitzer to SPICA, Ohsawa, R., Onaka, T., Sakon, I., Mori, T. I., Kaneda, H., Yamamura, I., Matsuura, M., Bernard-Salas, J., Bern'e, O., Joblin, C., SPICA Science Conference 2013, Univ. of Tokyo, Japan, 2013/06/18–2013/06/21 (poster)
The Origin of the Spectral Evolution in Young Planetary Nebulae, Ohsawa, R., Subaru Users Meeting FY2012, NAOJ, Japan, 2013/01/15–2013/01/17 (oral)
Diagnostics of PAHs in Planetary Nebulae, Ohsawa, R., 3rd Workshop of Nucleation Related to Cosmic Dust \& its contribution to the organic formation in 4.6 billion years ago, Sendai, Japan, 2012/07/23–2012/07/25 (oral)
Investigation of PAHs in Galactic Planetary Nebulae with the AKARI/IRC and the Spitzer/IRS, Ohsawa, R., Onaka, T., Sakon, I., Yamamura, I., Matsuura, M., Kaneda, H., Bernard-Salas, J., Bern'e, O., Joblin, C., The Second AKARI Conference: Legacy of AKARI: A Panoramic View of the Dusty Universe, Jeju, Korea, 2012/02/27–2012/02/29 (poster)
Processing of Polycyclic Aromatic Hydrocarbons in Evolved Planetary Nebulae, Ohsawa, R., Onaka, T., Sakon, I., Yamamura, I., Matsuura, M., Kaneda, H., IAU Symposium 283: Planetary Nebulae, an eye to the future, Canary islands, Spain, 2011/07/25–0211/07/29 (poster)
Observational Evidence for the Asymmetrical Dust Clouds around the Peculiar SN Impostor in the NGC 300, Ohsawa, R., Sakon, I., Onaka, T., Tanaka, M., Moriya, T., Nozawa, T., Maeda, K., Nomoto, K., Tominaga, N., Usui, F., et al., Workshop on Interstellar Matter 2010, Hokkaido Univ., Japan, 2010/09/13–2010/09/15 (poster \& oral)
The AKARI/IRC Observations of Galactic Planetary Nebulae: Aspects of 3.3 μm PAH Feature, Ohsawa, R., Onaka, T., Sakon, I., Yamamura, I., Matsuura, M., Kaneda, H., PAHs and the Universe, Toulouse, France, 2010/05/31–2010/06/04 (poster)
Domestic Conference
Progresses on data simulation and analysis of JASMINE, 大澤亮, JASMINE e2e simulation team, JASMINE Consortium Meeting 2023, 国立天文台, 2023/08/01–2023/08/02 (口頭発表)
Size distribution of the interplanetary dust particles measured by meteor observations, 大澤亮, 第33回 Grain Formation Workshop, 志賀島休暇村, 2016/12/12–2016/12/14 (口頭発表)
Investigation of PAH conditions in Galactic Planetary Nebulae with the AKARI/IRC and the Spitzer/IRS, 大澤亮, あかりによる我々の銀河系及び系外銀河の星間物質の研究会, 東京大学, 2011/12/15–2011/12/16 (口頭発表)
Investigation of the Destruction of 3.3 μm UIR band carrier in the Galactic Planetary Nebulae, 大澤亮, 尾中敬, 左近樹, 山村一誠, 松浦美香子, 金田英弘, AKARI Phase 3 Observation Workshop, JAXA, 2009/11/13 (口頭発表)