论文标题
$ω$ CENTAUI中的暗物质歼灭：MWA无线电数据得出的天体物理含义
Dark matter annihilation in $ω$ Centauri: Astrophysical implications derived from the MWA radio data
论文作者
论文摘要
我们介绍了Murchison Widefield阵列射电望远镜数据的分析，该数据可能是$ω$ CEN，这可能是我们Galaxy捕获的剥离的矮小球体星系核心。 Brown {\ it等人}（2019）和Reynoso-Cordova {\ it等人}（2019）对Fermi-Lat $γ$ ray数据的最新解释（2019年）（2019）表明$ω$ CEN可能包含重要的暗物质。我们利用其最佳拟合的暗物质灭绝模型，以及对$ω$ CEN中磁场强度的估计，以计算nih灭的预期无线电同步器信号，并证明可以使用我们的当前观察力限制无线电发射的当前观察力限制磁场扩散系数的重要部分 - 扩散系数。在这些限制上提高10-100的倍数可能会更加严格地限制模型。
We present an analysis of Murchison Widefield Array radio telescope data from $ω$ Cen, possibly a stripped dwarf spheroidal galaxy core captured by our Galaxy. Recent interpretations of Fermi-LAT $γ$-ray data by Brown {\it et al.} (2019) and Reynoso-Cordova {\it et al.} (2019) suggest that $ω$ Cen may contain significant Dark Matter. We utilise their best-fit Dark Matter annihilation models, and an estimate of the magnetic field strength in $ω$ Cen, to calculate the expected radio synchrotron signal from annihilation, and show that one can usefully rule out significant parts of the magnetic field - diffusion coefficient plane using our current observational limits on the radio emission. Improvement by a factor of 10-100 on these limits could constrain the models even more tightly.
