Karl G. Jansky甚大阵列巡天(VLASS)：科学目标与巡天设计
天体物理仪器与方法
2020-02-05 v3 星系天体物理
高能天体物理现象
摘要
甚大阵列巡天(VLASS)是一项具有独特组合特征的巡天、全天空射电巡天：高角分辨率(2.5")、高灵敏度(在叠加数据中1目标为70 Jy/beam)、全线性Stokes偏振测量、时域覆盖以及宽带宽(2-4 GHz)。首次观测始于2017年9月，巡天观测将于2024年完成。VLASS将使用Karl G. Jansky甚大阵列(VLA)约5500小时的时间来覆盖VLA可见的整个天空(赤纬)，总计33,885 deg。数据将在三个历元采集，以发现变源与暂现射电源。该巡天旨在吸引射电天文专家、多波段天文学家以及公民科学家共同参与。通过采用“on the fly”干涉测量模式，观测开销相比传统定点巡天大幅降低。在本文中，我们给出该巡天的科学目标与观测策略，以及早期巡天观测的结果。
引用
@article{arxiv.1907.01981,
title = {The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science case and survey design},
author = {M. Lacy and S. A. Baum and C. J. Chandler and S. Chatterjee and T. E. Clarke and S. Deustua and J. English and J. Farnes and B. M. Gaensler and N. Gugliucci and G. Hallinan and B. R. Kent and A. Kimball and C. J. Law and T. J. W. Lazio and J. Marvil and S. A. Mao and D. Medlin and K. Mooley and E. J. Murphy and S. Myers and R. Osten and G. T. Richards and E. Rosolowsky and L. Rudnick and F. Schinzel and G. R. Sivakoff and L. O. Sjouwerman and R. Taylor and R. L. White and J. Wrobel and H. Andernach and A. J. Beasley and E. Berger and S. Bhatnagar and M. Birkinshaw and G. C. Bower and W. N. Brandt and S. Brown and S. Burke-Spolaor and B. J. Butler and J. Comerford and P. B. Demorest and H. Fu and S. Giacintucci and K. Golap and T. Guth and C. A. Hales and R. Hiriart and J. Hodge and A. Horesh and Z. Ivezic and M. J. Jarvis and A. Kamble and N. Kassim and X. Liu and L. Loinard and D. K. Lyons and J. Masters and M. Mezcua and G. A. Moellenbrock and T. Mroczkowski and K. Nyland and C. P. O'Dea and S. P. O'Sullivan and W. M. Peters and K. Radford and U. Rao and J. Robnett and J. Salcido and Y. Shen and A. Sobotka and S. Witz and M. Vaccari and R. J. van Weeren and A. Vargas and P. K. G. Williams and I. Yoon},
journal= {arXiv preprint arXiv:1907.01981},
year = {2020}
}
备注
34 pages, accepted by PASP (modified from prior version to address referee's and coauthor comments). (v2) Minor fixes to author list