论文标题
伽马射线二进制候选赫斯J1832-093的多波长研究
A multi-wavelength study of the gamma-ray binary candidate HESS J1832-093
论文作者
论文摘要
我们在多波长的环境中研究了身份不明的非常高的能量（VHE）伽马射线对象Hess J1832-093的性质。基于X射线变异性和频谱指数（$γ_x\ sim \，1.5 $），并且其宽带光谱（与Hess J0632+057非常相似，确认的Gamma-ray Binary），Hess J1832-093被认为是强烈的Gamma-ray Barion-ray Barion-ray Barion-ray barion-ray Barion canterications in Pret之前的工作。在这项工作中，我们为这种情况提供了进一步的证据。我们使用Gemini/Flamingo获得了其IR对应物的频谱，发现了通常在大型恒星，尤其是O恒星中看到的吸收线。我们还获得了一个相当陡峭的ATCA频谱（$α= -1.18^{+1.04} _ { - 0.88} $），该光谱比AGN方案更喜欢伽马射线二进制。基于空间光谱分析和可变性搜索，我们发现4FGL J1832.9-0913可以与SNR G22.7-0.2相关联，而不是仅与HESS J1832-093相关联。
We investigate the nature of the unidentified very-high-energy (VHE) gamma-ray object, HESS J1832-093, in a multi-wavelength context. Based on X-ray variability and spectral index ($Γ_X\sim\,1.5$), and its broad-band spectrum (which was remarkably similar to HESS J0632+057, a confirmed gamma-ray binary), HESS J1832-093 has been considered to be a strong gamma-ray binary candidate in previous works. In this work, we provide further evidence for this scenario. We obtained a spectrum of its IR counterpart using Gemini/Flamingo, finding absorption lines that are usually seen in massive stars, in particular O stars. We also obtained a rather steep ATCA spectrum ($α=-1.18^{+1.04}_{-0.88}$) which prefers a gamma-ray binary over an AGN scenario. Based on spatial-spectral analysis and variability search, we found that 4FGL J1832.9-0913 is possible to be associated with SNR G22.7-0.2 rather than with HESS J1832-093 only.
