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タイトル: | Neutrinos from the Galactic Center Hosting a Hypernova Remnant |
著者: | He, Hao-Ning Lee, Shiu-Hang Nagataki, Shigehiro Kusenko, Alexander |
キーワード: | Neutrino astronomy Galactic center Hypernovae High energy astrophysics Supernova remnants Molecular clouds Neutrino telescopes Gamma-ray astronomy Gamma-ray telescopes Cosmic rays Hydrodynamical simulations Extended radiation sources |
発行日: | 18-Mar-2020 |
出版者: | American Astronomical Society |
誌名: | The Astrophysical Journal |
巻: | 891 |
論文番号: | 179 |
抄録: | Similar to star-forming galaxies or starburst galaxies, star-forming regions in our Galaxy can host cosmic-ray (CR) accelerators and rich gas as targets of hadronuclear interaction. By our estimations, the IceCube neutrino observatory might detect muon neutrinos from a CR accelerator associated with a molecular cloud complex in our Galaxy. The associated high-energy gamma-ray emission might be observed by the Cherenkov Telescope Array (CTA), High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC), and Large High Altitude Air Shower Observatory (LHAASO). Furthermore, taking the Galactic Center (GC) region as an example, we assume that a hypernova exploded in the past in the GC. We simulate the acceleration of CRs in the hypernova remnant (HNR) as well as their confinement and escape. The high-energy protons escape from the HNR, diffuse around the GC, interact with molecular clouds, and then produce gamma-rays and neutrinos. In the optimal cases, the GC would be a promising 100 TeV gamma-ray source for LHAASO's one-month observation. We propose that neutrino-induced searching for starting track-like and high-energy starting events (HESEs) observed by IceCube, from the GC region with a radius of 1°8, would help us discover the particle accelerator in the GC or constrain our models. Under the constraint from high-energy gamma-ray observations by the H.E.S.S. telescope, we estimate the exposure time needed to make a significant discovery for the optimal cases. The analysis combining observations of IceCube and ANTARES, starting track-like events and HESEs, future observations by neutrino detectors IceCube-Gen2 and KM3net, and gamma-ray telescopes CTA, HAWC, and LHAASO would help to constrain our models.... |
著作権等: | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
URI: | http://hdl.handle.net/2433/252542 |
DOI(出版社版): | 10.3847/1538-4357/ab7749 |
出現コレクション: | 学術雑誌掲載論文等 |
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