论文标题
使用SRG/Erosita的Hofnars的可观察性
Observability of HOFNARs with SRG/eROSITA
论文作者
论文摘要
中子星可以作为不同性质的来源。在本文中，我们介绍了假设的中子星类别的可观察性 - 热和快速的非吸收旋转器Hofnars。这些物体由于R模式不稳定性而加热。在表面温度下，$ \ sim 10^6 $ 〜K，预计将是热软X射线发射器。我们对HOFNARS进行种群合成模型，以预测Erosita All-Sky调查中潜在可检测到的来源的数量。对于表面温度，$ \ sim 10^6 $ 〜k我们获得$ \ sim 500 $源高于检测极限0.01〜cts〜s $^{ - 1} $和$ \ sim 100 $易于识别源，$> 0.1 $ 〜cts〜cts〜s $^s $^{ - 1} $。温度$ \ gtrsim 1.2 \ times 10^6 $ 〜k开始与Rosat的hofnars无检测矛盾。仅适用于$ t \ Lessim 5 \ times 10^5 $ 〜K数字，预测的Erosita的数字是如此之低，以至于无法识别。我们得出的结论是，如果存在Erosita，则有机会发现Hofnars（如果存在）。非检测将对这种类型的中子星的性质施加非常严格的限制。
Neutron stars can appear as sources of different nature. In this paper we address observability of a hypothetical class of neutron stars -- HOt and Fast Non Accreting Rotators, HOFNARs. These objects are heated due to the r-mode instability. With surface temperatures $\sim 10^6$~K they are expected to be thermal soft X-ray emitters. We perform a population synthesis modeling of HOFNARs to predict the number of potentially detectable sources in the eROSITA all-sky survey. For surface temperatures $\sim 10^6$~K we obtain $\sim 500$ sources above the detection limit 0.01~cts~s$^{-1}$ and $\sim 100$ easier identifiable sources with $>0.1$~cts~s$^{-1}$. Temperatures $\gtrsim 1.2\times 10^6$~K start to be in contradiction with non-detection of HOFNARs by ROSAT. Only for $T\lesssim 5\times 10^5$~K numbers predicted for eROSITA turn out to be so low that identification does not look possible. We conclude that eROSITA has good chances to discover HOFNARs, if they exist. Non-detection will put very stringent limits on the properties of this type of neutron stars.
