论文标题
S190426C上的增长II：生长印度望远镜搜索具有自定义图像减少和候选审查管道的光学对应物
GROWTH on S190426c II: GROWTH-India Telescope search for an optical counterpart with a custom image reduction and candidate vetting pipeline
论文作者
论文摘要
S190426C / GW190426_152155是Ligo -Virgo协作检测到的第一个可能的中子星 - 黑洞合并候选人。我们使用0.7m的India望远镜进行了瓷砖搜索此事件的光学对应物。在两周的时间内，我们在22.1摄氏度^2区域获得了多个观察结果，其中包含源位置的可能性为17.5％。最初的努力包括获得各组报告的源的光度法，以及该地区包含的所有星系中的目视搜索。随后，我们开发了一个图像减法和候选审查管道，效率约为瞬态检测。使用此管道处理数据，我们发现了几个瞬态，但没有与Kilonova模型兼容的。我们介绍了我们的观察结果的细节，管道的工作，搜索结果以及我们对LVK O4运行期间将作为探路者的非潜在的解释。
S190426c / GW190426_152155 was the first probable neutron star - black hole merger candidate detected by the LIGO-Virgo Collaboration. We undertook a tiled search for optical counterparts of this event using the 0.7m GROWTH-India Telescope. Over a period of two weeks, we obtained multiple observations over a 22.1 deg^2 area, with a 17.5% probability of containing the source location. Initial efforts included obtaining photometry of sources reported by various groups, and a visual search for sources in all galaxies contained in the region. Subsequently, we have developed an image subtraction and candidate vetting pipeline with ~ 94% efficiency for transient detection. Processing the data with this pipeline, we find several transients, but none that are compatible with kilonova models. We present the details of our observations, working of our pipeline, results from the search, and our interpretations of the non-detections that will work as a pathfinder during the O4 run of LVK.
