Associated molecular and atomic clouds with X-ray shell of superbubble 30 Doradus C in the LMC
| العنوان: | Associated molecular and atomic clouds with X-ray shell of superbubble 30 Doradus C in the LMC |
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| المؤلفون: | N. Maxted, Shu-ichiro Inutsuka, Kazuki Tokuda, Gavin Rowell, Kisetsu Tsuge, F. Voisin, Aya Bamba, Kengo Tachihara, Y. Yamane, K. Fujii, Yasunori Babazaki, Satoshi Yoshiike, T. Inaba, Toshikazu Onishi, Tsuyoshi Inoue, T. Fukuda, Hidetoshi Sano, Yasuo Fukui, Felix Aharonian, Norikazu Mizuno, Miroslav Filipovic, Ikuyuki Mitsuishi, Akiko Kawamura |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Proton, Molecular cloud, Astrophysics::High Energy Astrophysical Phenomena, Interstellar cloud, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Superbubble, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Interstellar medium, Supernova, Star cluster, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics |
| الوصف: | 30 Doradus C is a superbubble which emits the brightest nonthermal X- and TeV gamma-rays in the Local Group. In order to explore detailed connection between the high energy radiation and the interstellar medium, we have carried out new CO and HI observations using the Atacama Large Millimeter$/$Submillimeter Array (ALMA), Atacama Submillimeter Telescope Experiment, and the Australia Telescope Compact Array with resolutions of up to 3 pc. The ALMA data of $^{12}$CO($J$ = 1-0) emission revealed 23 molecular clouds with the typical diameters of $\sim$6-12 pc and masses of $\sim$600-10000 $M_{\odot}$. The comparison with the X-rays of $XMM$-$Newton$ at $\sim$3 pc resolution shows that X-rays are enhanced toward these clouds. The CO data were combined with the HI to estimate the total interstellar protons. Comparison of the interstellar proton column density and the X-rays revealed that the X-rays are enhanced with the total proton. These are most likely due to the shock-cloud interaction modeled by the magnetohydrodynamical simulations (Inoue et al. 2012, ApJ, 744, 71). Further, we note a trend that the X-ray photon index varies with distance from the center of the high-mass star cluster, suggesting that the cosmic-ray electrons are accelerated by one or multiple supernovae in the cluster. Based on these results we discuss the role of the interstellar medium in cosmic-ray particle acceleration. 20 pages, 14 figures, 3 tables, accepted for publication in The Astrophysical Journal |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d68df5bd31170506562ee78d588e5129 http://arxiv.org/abs/2106.09916 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d68df5bd31170506562ee78d588e5129 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |