Academic Journal

Heliocentric distance dependence of zodiacal light observed by Hayabusa2#

التفاصيل البيبلوغرافية
العنوان: Heliocentric distance dependence of zodiacal light observed by Hayabusa2#
المؤلفون: Kohji Tsumura, Shuji Matsuura, Kei Sano, Takahiro Iwata, Hajime Yano, Kohei Kitazato, Kohji Takimoto, Manabu Yamada, Tomokatsu Morota, Toru Kouyama, Masahiko Hayakawa, Yasuhiro Yokota, Eri Tatsumi, Moe Matsuoka, Naoya Sakatani, Rie Honda, Shingo Kameda, Hidehiko Suzuki, Yuichiro Cho, Kazuo Yoshioka, Kazunori Ogawa, Kei Shirai, Hirotaka Sawada, Seiji Sugita
المصدر: Earth, Planets and Space, Vol 75, Iss 1, Pp 1-24 (2023)
بيانات النشر: SpringerOpen, 2023.
سنة النشر: 2023
المجموعة: LCC:Geography. Anthropology. Recreation
LCC:Geodesy
LCC:Geology
مصطلحات موضوعية: Zodiacal light, Interplanetary dust, Hayabusa2#, Geography. Anthropology. Recreation, Geodesy, QB275-343, Geology, QE1-996.5
الوصف: Abstract Zodiacal light (ZL) is sunlight scattered by interplanetary dust particles (IDPs) at optical wavelengths. The spatial distribution of IDPs in the Solar System may hold an important key to understanding the evolution of the Solar System and material transportation within it. The number density of IDPs can be expressed as $$n(r) \sim r^{-\alpha }$$ n ( r ) ∼ r - α , and the exponent $$\alpha \sim 1.3$$ α ∼ 1.3 was obtained by previous observations from interplanetary space by Helios 1/2 and Pioneer 10/11 in the 1970s and 1980s. However, no direct measurements of $$\alpha $$ α based on ZL observations from interplanetary space outside Earth’s orbit have been performed since then. Here, we introduce initial results for the radial profile of the ZL at optical wavelengths observed over the range 0.76 $$-$$ - 1.06 au by ONC-T aboard the Hayabusa2# mission in 2021-2022. The ZL brightness we obtained is well reproduced by a model brightness, although there is a small excess of the observed ZL brightness over the model brightness at around 0.9 au. The radial power-law index we obtained is $$\alpha = 1.30 \pm 0.08$$ α = 1.30 ± 0.08 , which is consistent with previous results based on ZL observations. The dominant source of uncertainty arises from the uncertainty in estimating the diffuse Galactic light (DGL). Graphical Abstract
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1880-5981
Relation: https://doaj.org/toc/1880-5981
DOI: 10.1186/s40623-023-01856-x
URL الوصول: https://doaj.org/article/353630d256a24e80a8a0ad9f9e6185b1
رقم الانضمام: edsdoj.353630d256a24e80a8a0ad9f9e6185b1
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:18805981
DOI:10.1186/s40623-023-01856-x