论文标题
银河凸出毫秒脉冲射线闪闪发光：伽马射线的视角
The Galactic bulge millisecond pulsars shining in X rays: A gamma-ray perspective
论文作者
论文摘要
如果神秘的Fermi-Lat Gev伽马射线过量是由于银河凸起中未解决的毫秒脉冲星（MSP），那么人们希望在X射线中相同的人群会大放异彩。我们第一次解决了一个问题，即当前X射线望远镜对银河膨胀中MSP种群的敏感性是什么。为此，我们创建了基于观察到的源属性的伽马和X射线MSP发射之间的经验联系，建立了一个合成的银河MSP。我们将模型与最新的Chandra源目录中的紧凑源进行比较，并根据频谱观测值和Gaia进行光学标准进行选择。我们发现，感兴趣地区的Chandra来源与尚未确定的凸起的MSP保持一致。这激发了对凸起MSP的专用多波长搜索：简要讨论了一些有希望的方向。
If the mysterious Fermi-LAT GeV gamma-ray excess is due to an unresolved population of millisecond pulsars (MSP) in the Galactic bulge, one expects this very same population to shine in X rays. For the first time, we address the question of what is the sensitivity of current X-ray telescopes to an MSP population in the Galactic bulge. To this end, we create a synthetic population of Galactic MSPs, building on an empirical connection between gamma- and X-ray MSP emission based on observed source properties. We compare our model with compact sources in the latest Chandra source catalog, applying selections based on spectral observables and optical astrometry with Gaia. We find a significant number of Chandra sources in the region of interest to be consistent with being bulge MSPs that are as yet unidentified. This motivates dedicated multi-wavelength searches for bulge MSPs: Some promising directions are briefly discussed.
