论文标题
第二Swift-XRT点源目录中的乳清外瞬态候选
Extragalactic transient candidates in the Second Swift-XRT Point Source catalogue
论文作者
论文摘要
第二个Swift-XRT点源目录提供了天空覆盖范围和敏感性的结合，并为瞬时发现提供了宝贵的机会。我们在非活动和活动星系的位置搜索目录，并通过与XMM-Newton和Rosat进行比较。我们恢复了167个以前已知的瞬变，并找到了19个与新资源一致的来源，估计完整性为$ \ sim65 \％$。这19个新来源在非活动主机和活动主机之间大致分布及其峰值X射线光度跨度$ \ sim 10^{42} -10^{47} $ ERG S $^{ - 1} $。我们发现八种最适合非热谱模型，一个与黑体最合适。我们还讨论了我们的方法论及其在即将到来的SWIEL Swift-XRT点源目录中的应用，以实时偶然发现$ \ sim $ \ sim $每年几个新的X射线瞬变。
The Second Swift-XRT Point Source catalogue offers a combination of sky coverage and sensitivity and presents an invaluable opportunity for transient discovery. We search the catalogue at the positions of inactive and active galaxies, and identify transient candidates by comparison with XMM-Newton and ROSAT. We recover 167 previously known transients and find 19 sources consistent with being new sources, estimating a completeness of $\sim65\%$. These 19 new sources are split approximately equally between inactive and active hosts and their peak X-ray luminosities span $\sim 10^{42} - 10^{47}$ erg s$^{-1}$. We find eight are best fit with non-thermal spectral models and one with a blackbody. We also discuss our methodology and its application to the forthcoming Living Swift-XRT Point Source catalogue for the potential near real time serendipitous discovery of $\sim$ few new X-ray transients per year.
