论文标题
2016 - 2019年绿色银行望远镜的L波段校准
L-band Calibration of the Green Bank Telescope from 2016-2019
论文作者
论文摘要
自2016年以来，Hi-Manga调查一直在获得附近星系的中性氢（发射21cm线路线）的测量值，这是称为“漫画”的调查的一部分。这是使用绿色银行射电望远镜（GBT）的观察结果完成的。我们使用在整个期间观测运行开始时常规获得的校准数据，以及2019年获得的额外校准数据，以检查L波段（1.4 GHz或20厘米）的标准GBT数据降低校准。我们发现，相对于GBT数据减少该类型数据的GBT数据减少管道中给出的标准值，校准的恒定偏移为20％。此校正将用于改善Hi-Manga的测量。
Since 2016, the HI-MaNGA survey has been obtaining neutral hydrogen (which emits a radio 21cm line) measurements for nearby galaxies which are part of a survey known as "MaNGA". This has been done using observations at the Green Bank Radio Telescope (GBT). We use calibration data obtained routinely at the start of observing runs during this entire period, as well as an extra set of calibration data obtained in 2019 to check the standard GBT data reduction calibrations at L-band (1.4 GHz, or 20cm). We find an constant offset of 20% in the calibration relative to the standard values given in the GBT data reduction pipeline for data of this type. This correction will be used to improve measurements for HI-MaNGA.
