论文标题
索非亚（Salsa Legacy Program） - III：首次数据发布和在线极化映射表征
Extragalactic magnetism with SOFIA (SALSA Legacy Program) -- III: First data release and on-the-fly polarization mapping characterization
论文作者
论文摘要
我们描述了索非亚（Salsa Legacy Program）对外层次磁性调查的数据处理。第一个数据发布显示了从2020年1月至2021年12月花费的总授予的时间中的33％（155.7h中的51.34h）。我们的观察是使用新实施的现场映射（OTFMAP）技术进行的，以极化模式进行。我们提出了管道步骤，以获取星系极化图的高级数据产物，用于科学分析。我们的方法具有一般设计，可以应用于任何给定频段中HAWC+数组的视野的源。我们估计，与先前使用斩波和节点模式相比，OTFMAP极化模式可将观察开销的降低降低2.34，而敏感性则提高了1.80的敏感性。 OTFMAP是HAWC+极化模式的显着优化，因为它最终通过将收集到的每小时观察的科学提高到总体上为2.49，从而降低了索非亚/HAWC+的运营成本。 OTFMAP极化模式是莎莎的标准观察策略。第一个数据发布的结果和定量分析在该系列的论文IV和V中介绍。
We describe the data processing of the Survey on extragALactic magnetiSm with SOFIA (SALSA Legacy Program). This first data release presents 33% (51.34h out of 155.7h, including overheads) of the total awarded time taken from January 2020 to December 2021. Our observations were performed using the newly implemented on-the-fly mapping (OTFMAP) technique in the polarimetric mode. We present the pipeline steps to obtain homogeneously reduced high-level data products of polarimetric maps of galaxies for use in scientific analysis. Our approach has a general design and can be applied to sources smaller than the field-of-view of the HAWC+ array in any given band. We estimate that the OTFMAP polarimetric mode offers a reduction of observing overheads by a factor 2.34, and an improvement in sensitivity by a factor 1.80 when compared to previously obtained polarimetric observations using the chopping and nodding mode. The OTFMAP is a significant optimization of the polarimetric mode of HAWC+ as it ultimately reduces the cost of operations of SOFIA/HAWC+ by increasing the science collected per hour of observation up to an overall factor of 2.49. The OTFMAP polarimetric mode is the standard observing strategy of SALSA. The results and quantitative analysis of this first data release are presented in Papers IV and V of the series.
