论文标题
主管与丽莎的中间群众二进制黑洞的定位以及与雅典娜和LSST进行联合观察的前景
Premerger localization of intermediate mass binary black holes with LISA and prospects of joint observations with Athena and LSST
论文作者
论文摘要
计划的激光干涉空间天线（LISA）将能够从质量范围$ \ sim 10^{2} {2} \ mbox { - mbox { - } 10^{4} {4} {4} {4} \，m_ _ sim {sim sim {由于丽莎周围轨道运动引起的调节作用促进了来源的精确预先定位，这反过来又有助于电磁（EM）随访。在这项工作中，我们计算出天空位置的不确定性，光度距离和聚结的时间，这是合并时间的函数。对于IMBBHS的代表性质量，我们合成了统一位置并定向在半径3 GPC的球体上，并使用Fisher Information Matrix计算投影参数测量不确定性。我们发现，对于$ 10^3 \，m _ {\ odot} $的系统，天空位置和光度距离的错误分别为$ \ sim 0.4 \，\ text {deg}^2 $和$ \ sim 6 \％6 \％$，分别是在融合之前的一天。合并时间可以通过不确定性$ \ Lessim 10 $ sec进行预测。我们还发现，$ 10^3 \，m _ {\ odot} $，大约$ 40 \％$（$ 100 \％$）的人口的源本地化比合并前一天的雅典娜（LSST）较小。这些极为精确的测量值可用于警告基于地面的GW探测器和EM望远镜这些合并的时间和位置。我们还讨论了可能从IMBBH合并产生EM发射的机制，并使用X射线频段的光学和雅典娜的计划和时间（LSST）计划的遗产调查来研究其可检测性。检测EM瞬态可能会为我们提供有关这些合并发生的环境的重要线索，并且距离估计可以为宇宙学铺平道路。
The planned Laser Interferometric Space Antenna (LISA) will be able to detect gravitational waves (GWs) from intermediate mass binary black holes (IMBBHs) in the mass range $\sim 10^{2} \mbox{-} 10^{4}\,M_{\odot}$ up to a redshift $z\sim20$. Modulation effects due to orbital motion of LISA around the Sun facilitate precise premerger localization of the sources, which in turn would help in electromagnetic (EM) followups. In this work, we calculate the uncertainties in sky position, luminosity distance, and time of coalescence as a function of time to coalescence. For representative masses of the IMBBHs, we synthesize a population of binaries uniformly located and oriented on a sphere of radius 3 Gpc and compute the projected parameter measurement uncertainties using the Fisher information matrix. We find that for systems with a total mass of $10^3\,M_{\odot}$, the errors in the sky position and luminosity distance are $\sim 0.4\,\text{deg}^2$ and $\sim 6\%$, respectively, one day prior to coalescence. The coalescence time can be predicted with an uncertainty $\lesssim 10$ sec, one day before coalescence. We also find that for $10^3\,M_{\odot}$, around $40\%$ ($100\%$) of the population has a source localization that is smaller than the field of view of Athena (LSST) one day before the merger. These extremely precise measurements can be used to alert ground-based GW detectors and EM telescopes about the time and location of these mergers. We also discuss mechanisms that may produce EM emission from IMBBH mergers and study its detectability using the planned Legacy Survey of Space and Time (LSST) in the optical and Athena in the x-ray bands. Detection of an EM transient may provide us vital clues about the environments where these mergers occur and the distance estimation can pave the way for cosmography.
