تقرير
Indication of Another Intermediate-mass Black Hole in the Galactic Center
| العنوان: | Indication of Another Intermediate-mass Black Hole in the Galactic Center |
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| المؤلفون: | Takekawa, Shunya, Oka, Tomoharu, Iwata, Yuhei, Tsujimoto, Shiho, Nomura, Mariko |
| سنة النشر: | 2018 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We report the discovery of molecular gas streams orbiting around an invisible massive object in the central region of our Galaxy, based on the high-resolution molecular line observations with the Atacama Large Millimeter/submillimeter Array (ALMA). The morphology and kinematics of these streams can be reproduced well through two Keplerian orbits around a single point mass of $(3.2 \pm 0.6)\times 10^4 \ M_\odot$. We also found ionized gas toward the inner part of the orbiting gas, indicating dissociative shock and/or photoionization. Our results provide new circumstantial evidences for a wandering intermediate-mass black hole in the Galactic center, suggesting also that high-velocity compact clouds can be probes of quiescent black holes abound in our Galaxy. Comment: Accepted for publication on the Astrophysical Journal Letters |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/2041-8213/aafb07 |
| URL الوصول: | http://arxiv.org/abs/1812.10733 |
| رقم الأكسشن: | edsarx.1812.10733 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/2041-8213/aafb07 |
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