论文标题
进入暗物质天文学时代？ X射线和伽马射线带的长期预测接近
Entering the Era of Dark Matter Astronomy? Near to Long-Term Forecasts in X-Ray and Gamma-Ray Bands
论文作者
论文摘要
我们使用在现实环境（FIRE-2）中通过最先进的反馈反馈套件确定的空间和运动学信息来评估银河系暗物质（DM）对光子对光子的敏感性。对于运动信息，我们研究了FIRE-2中预测的DM窄发射线的能量移位模式，并讨论了其作为DM信号诊断的潜力，这首先显示了对称观测值左右$ L = 0^{\ Circ} $。我们发现，解决Xrism的DM分离的线路分离为5。我们发现，大量的视野暴露仍然是检测DM灭绝或通过信号在视图领域的光度来检测DM的最敏感方法。 $ \ sim $ 4 $ 4 SR视图通过EXTP任务的广泛野外监视器（WFM）对DM信号高度敏感，并有$ \ sim 10^5 $ 10^5 $至$ 10^6 $的$ 10^6 $事件，来自3.5 KEV系列中的100 ks曝光，依赖于photsontents the Photmon在wfm的字段中依赖于photsontent。我们还研究了DM歼灭和衰减信号的详细详细的全天空亮度图 - 评估具有逼真的X射线和伽马射线背景的DM检测的信噪比 - 作为即将到来的DM天文学时代的指南。
We assess Galactic Dark Matter (DM) sensitivities to photons from annihilation and decay using the spatial and kinematic information determined by state-of-the-art simulations in the Latte suite of Feedback In Realistic Environments (FIRE-2). For kinematic information, we study the energy shift pattern of DM narrow emission lines predicted in FIRE-2 and discuss its potential as DM-signal diagnosis, showing for the first time the power of symmetric observations around $l=0^{\circ}$. We find that the exposures needed to resolve the line separation of DM to gas by XRISM at $5σ$ to be large, $\gtrsim 4$ Ms, while exposures are smaller for Athena ($\lesssim 50$ ks) and Lynx ($\lesssim 100$ ks). We find that large field-of-view exposures remain the most sensitive methods for detection of DM annihilation or decay by the luminosity of signals in the field of view dominating velocity information. The $\sim$4 sr view of the Galactic Center region by the Wide Field Monitor (WFM) aboard the eXTP mission will be highly sensitive to DM signals, with a prospect of $\sim 10^5$ to $10^6$ events from the 3.5 keV line in a 100 ks exposure, with the range dependent on photon acceptance in WFM's field of view. We also investigate detailed all-sky luminosity maps for both DM annihilation and decay signals - evaluating the signal-to-noise for a DM detection with realistic X-ray and gamma-ray backgrounds - as a guideline for what could be a forthcoming era of DM astronomy.
