First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment
We are developing the Gamma-Ray Astro-Imager with Nuclear Emulsion project, designed for 10 MeV–100 GeV cosmic γ -ray observations with a high angular resolution (5′/0.°08 at 1–2 GeV) and a polarization-sensitive large-aperture (∼10 m ^2 ) emulsion telescope for repeated long-duration balloon flight...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ad0973 |
| _version_ | 1827576716475760640 |
|---|---|
| author | Satoru Takahashi Shigeki Aoki Atsushi Iyono Ayaka Karasuno Kohichi Kodama Ryosuke Komatani Masahiro Komatsu Masahiro Komiyama Kenji Kuretsubo Toshitsugu Marushima Syota Matsuda Kunihiro Morishima Misaki Morishita Naotaka Naganawa Mitsuhiro Nakamura Motoya Nakamura Takafumi Nakamura Yuya Nakamura Noboru Nakano Toshiyuki Nakano Kazuma Nakazawa Akira Nishio Miyuki Oda Hiroki Rokujo Osamu Sato Kou Sugimura Atsumu Suzuki Mayu Torii Saya Yamamoto Masahiro Yoshimoto |
| author_facet | Satoru Takahashi Shigeki Aoki Atsushi Iyono Ayaka Karasuno Kohichi Kodama Ryosuke Komatani Masahiro Komatsu Masahiro Komiyama Kenji Kuretsubo Toshitsugu Marushima Syota Matsuda Kunihiro Morishima Misaki Morishita Naotaka Naganawa Mitsuhiro Nakamura Motoya Nakamura Takafumi Nakamura Yuya Nakamura Noboru Nakano Toshiyuki Nakano Kazuma Nakazawa Akira Nishio Miyuki Oda Hiroki Rokujo Osamu Sato Kou Sugimura Atsumu Suzuki Mayu Torii Saya Yamamoto Masahiro Yoshimoto |
| author_sort | Satoru Takahashi |
| collection | DOAJ |
| description | We are developing the Gamma-Ray Astro-Imager with Nuclear Emulsion project, designed for 10 MeV–100 GeV cosmic γ -ray observations with a high angular resolution (5′/0.°08 at 1–2 GeV) and a polarization-sensitive large-aperture (∼10 m ^2 ) emulsion telescope for repeated long-duration balloon flights. In 2018, a balloon-borne experiment was carried out in Australia with a 0.38 m ^2 sensitive area and a flight duration of 17.4 hr, including 6.7 hr of Vela observations. Significant improvements compared with the 2015 balloon-borne experiment were achieved by a factor of 5, including both an increase in effective area × time and a reduction in the background contribution. We aimed to demonstrate the telescope’s overall performance based on detection and imaging of a known γ -ray source, the Vela pulsar. A robust detection of the Vela pulsar was achieved with a 68% containment radius of 0.°42, at a significance of 6 σ , at energies above 80 MeV. The resulting angular profile is consistent with that of a pointlike source. We achieved the current best imaging performance of the Vela pulsar using an emulsion γ -ray telescope with the highest angular resolution of any γ -ray telescope to date. |
| first_indexed | 2024-03-08T21:16:25Z |
| format | Article |
| id | doaj.art-8c672c050b1846a59b9e4cdc3e19057d |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T21:16:25Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-8c672c050b1846a59b9e4cdc3e19057d2023-12-21T16:58:44ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0196014710.3847/1538-4357/ad0973First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne ExperimentSatoru Takahashi0Shigeki Aoki1Atsushi Iyono2Ayaka Karasuno3Kohichi Kodama4Ryosuke Komatani5Masahiro Komatsu6Masahiro Komiyama7Kenji Kuretsubo8Toshitsugu Marushima9Syota Matsuda10Kunihiro Morishima11Misaki Morishita12Naotaka Naganawa13Mitsuhiro Nakamura14Motoya Nakamura15Takafumi Nakamura16Yuya Nakamura17Noboru Nakano18Toshiyuki Nakano19Kazuma Nakazawa20Akira Nishio21Miyuki Oda22Hiroki Rokujo23Osamu Sato24Kou Sugimura25Atsumu Suzuki26Mayu Torii27Saya Yamamoto28Masahiro Yoshimoto29Kobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpOkayama University of Science , Okayama 700-0005, JapanKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpAichi University of Education , Kariya 448-8542, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanGifu University , Gifu 501-1193, JapanNagoya University , Nagoya 464-8602, JapanKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanNagoya University , Nagoya 464-8602, JapanKobe University , Kobe 657-8501, Japan ; satoru@radix.h.kobe-u.ac.jpNagoya University , Nagoya 464-8602, JapanOkayama University of Science , Okayama 700-0005, JapanGifu University , Gifu 501-1193, JapanWe are developing the Gamma-Ray Astro-Imager with Nuclear Emulsion project, designed for 10 MeV–100 GeV cosmic γ -ray observations with a high angular resolution (5′/0.°08 at 1–2 GeV) and a polarization-sensitive large-aperture (∼10 m ^2 ) emulsion telescope for repeated long-duration balloon flights. In 2018, a balloon-borne experiment was carried out in Australia with a 0.38 m ^2 sensitive area and a flight duration of 17.4 hr, including 6.7 hr of Vela observations. Significant improvements compared with the 2015 balloon-borne experiment were achieved by a factor of 5, including both an increase in effective area × time and a reduction in the background contribution. We aimed to demonstrate the telescope’s overall performance based on detection and imaging of a known γ -ray source, the Vela pulsar. A robust detection of the Vela pulsar was achieved with a 68% containment radius of 0.°42, at a significance of 6 σ , at energies above 80 MeV. The resulting angular profile is consistent with that of a pointlike source. We achieved the current best imaging performance of the Vela pulsar using an emulsion γ -ray telescope with the highest angular resolution of any γ -ray telescope to date.https://doi.org/10.3847/1538-4357/ad0973Gamma-ray astronomyCosmic raysHigh altitude balloons |
| spellingShingle | Satoru Takahashi Shigeki Aoki Atsushi Iyono Ayaka Karasuno Kohichi Kodama Ryosuke Komatani Masahiro Komatsu Masahiro Komiyama Kenji Kuretsubo Toshitsugu Marushima Syota Matsuda Kunihiro Morishima Misaki Morishita Naotaka Naganawa Mitsuhiro Nakamura Motoya Nakamura Takafumi Nakamura Yuya Nakamura Noboru Nakano Toshiyuki Nakano Kazuma Nakazawa Akira Nishio Miyuki Oda Hiroki Rokujo Osamu Sato Kou Sugimura Atsumu Suzuki Mayu Torii Saya Yamamoto Masahiro Yoshimoto First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment The Astrophysical Journal Gamma-ray astronomy Cosmic rays High altitude balloons |
| title | First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment |
| title_full | First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment |
| title_fullStr | First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment |
| title_full_unstemmed | First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment |
| title_short | First Emulsion γ-Ray Telescope Imaging of the Vela Pulsar by the GRAINE 2018 Balloon-borne Experiment |
| title_sort | first emulsion γ ray telescope imaging of the vela pulsar by the graine 2018 balloon borne experiment |
| topic | Gamma-ray astronomy Cosmic rays High altitude balloons |
| url | https://doi.org/10.3847/1538-4357/ad0973 |
| work_keys_str_mv | AT satorutakahashi firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT shigekiaoki firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT atsushiiyono firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT ayakakarasuno firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT kohichikodama firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT ryosukekomatani firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT masahirokomatsu firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT masahirokomiyama firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT kenjikuretsubo firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT toshitsugumarushima firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT syotamatsuda firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT kunihiromorishima firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT misakimorishita firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT naotakanaganawa firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT mitsuhironakamura firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT motoyanakamura firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT takafuminakamura firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT yuyanakamura firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT noborunakano firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT toshiyukinakano firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT kazumanakazawa firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT akiranishio firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT miyukioda firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT hirokirokujo firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT osamusato firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT kousugimura firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT atsumusuzuki firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT mayutorii firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT sayayamamoto firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment AT masahiroyoshimoto firstemulsiongraytelescopeimagingofthevelapulsarbythegraine2018balloonborneexperiment |