标题： HESS J1632-478：一个高能遗迹 显示英文标题

标题： HESS J1632-478: an energetic relic

摘要： HESS J1632-478 是银河系平面上一个尚未识别的延伸甚高能源。为了确定这一非常高能发射源的身份，并限制其能谱能量分布，我们利用了通过 XMM-Newton 获得的深场观测数据，结合来自 Molonglo、Spitzer 和 Fermi 的数据来探测其他波长的对应物。HESS J1632-478 发出的流量密度在极高能量处达到峰值，在所有其他探测到的波长上则弱 20 倍以上。源光谱有两个显著的大峰，其中同步辐射在紫外区达到峰值，外部逆康普顿辐射在 TeV 区达到峰值。HESS J1632-478 是一个能量充沛的脉冲星风星云，年龄约为 10^4 年。它的全波段（主要是GeV-TeV）亮度达到了当前脉冲星减速功率的 10%。其同步辐射星云大小为 1 pc，并包含一个未解析的点状 X 射线源，可能是脉冲星及其风终止激波。 显示英文摘要

摘要： HESS J1632-478 is an extended and still unidentified TeV source in the galactic plane. In order to identify the source of the very high energy emission and to constrain its spectral energy distribution, we used a deep observation of the field obtained with XMM-Newton together with data from Molonglo, Spitzer and Fermi to detect counterparts at other wavelengths. The flux density emitted by HESS J1632-478 peaks at very high energies and is more than 20 times weaker at all other wavelengths probed. The source spectrum features two large prominent bumps with the synchrotron emission peaking in the ultraviolet and the external inverse Compton emission peaking in the TeV. HESS J1632-478 is an energetic pulsar wind nebula with an age of the order of 10^4 years. Its bolometric (mostly GeV-TeV) luminosity reaches 10% of the current pulsar spin down power. The synchrotron nebula has a size of 1 pc and contains an unresolved point-like X-ray source, probably the pulsar with its wind termination shock.