论文标题
使用NIKA2动力电感探测器摄像机检测磁铁XTE XTE J1810-197和260 GHz的检测
Detection of the magnetar XTE J1810-197 at 150 and 260 GHz with the NIKA2 Kinetic Inductance Detector camera
论文作者
论文摘要
由于脉冲星信号的晕厥以及可用设施的相对低灵敏度，与在百分之千克频段中运行的100米类望远镜相比，对毫米和光波长之间的脉冲星的研究是具有挑战性的。动力电感检测器（KID）技术提供了较大的瞬时带宽和高灵敏度，可以有助于大大提高现有观测值在短波长检测脉冲星和瞬态发射的能力。为了调查与孩子一起检测脉冲星的可行性，我们观察到异常的X射线脉冲星XTE J1810-197使用新的IRAM Kids Array-2（Nika2）摄像头安装在西班牙IRAM 30-m望远镜上。我们在两个工作频段（分别为$λ$ = 2.0和1.15 mm）的两个工作频段中检测到脉冲星的脉动。这是第一次使用基于毫米频段的KID技术的接收器检测到脉冲星。此外，这是2018年12月重新激活后XTE J1810-197发射短毫米排放的第一项报告，也是第一次以260 GHz检测到来源，这使我们对恒星的无线电发射过程提供了新的见解。
The investigation of pulsars between millimetre and optical wavelengths is challenging due to the faintness of the pulsar signals and the relative low sensitivity of the available facilities compared to 100-m class telescopes operating in the centimetre band. The Kinetic Inductance Detector (KID) technology offers large instantaneous bandwidths and a high sensitivity that can help to substantially increase the ability of existing observatories at short wavelengths to detect pulsars and transient emission. To investigate the feasibility of detecting pulsars with KIDs, we observed the anomalous X-ray pulsar XTE J1810-197 with the New IRAM KIDs Array-2 (NIKA2) camera installed at the IRAM 30-m Telescope in Spain. We detected the pulsations from the pulsar with NIKA2 at its two operating frequency bands, 150 and 260 GHz ($λ$=2.0 and 1.15 mm, respectively). This is the first time that a pulsar is detected with a receiver based on KID technology in the millimetre band. In addition, this is the first report of short millimetre emission from XTE J1810-197 after its reactivation in December 2018, and it is the first time that the source is detected at 260 GHz, which gives us new insights into the radio emission process of the star.
