Development of X-ray microcalorimeter camera for understanding of hot Universe structure

我们研究了所谓的失踪重子问题，这是现代宇宙学中遗留的问题之一。我们采取了两种方法：观察研究和开发一种新的低温探测器。我们开发了用于低温探测器微热计的信号复用技术，并将探测器的带宽延长了一个数量级。通过数值模拟，我们证实了探测器的灵敏度，并且模拟结果与我们从观测中得到的表面亮度上限一致。

We studied so-called missing baryon problem, which is one of the remaining questions in modern cosmology. We took two approaches : observational study and development of a new cryogenic detector. We have developed signal multiplexing technique for the cryogenic detector microcalorimeters and have extended the bandwidth of the detector by a order of magnitude. By performing numerical simulations, we confirmed the sensitivity of the detector and the simulation is consistent with the upper limit of the surface brightness we obtained from observations.