Science with the Murchison Widefield Array: Phase I results and Phase II opportunities
Science with the Murchison Widefield Array: Phase I results and Phase II opportunities
复制标题
DOI：
10.1017/pasa.2019.41
复制
发表时间：
2019-10
影响因子：
6.3
通讯作者：
A. Beardsley;M. Johnston-Hollitt;C. Trott;J. Pober;J. F. Morgan;D. Oberoi;D. Kaplan;C. Lynch;G. Anderson;P. McCauley;S. Croft;C. James;O. I. Wong;C. Tremblay;R. Norris;I. Cairns;C. Lonsdale;P. Hancock;B. Gaensler;N. Bhat;W. Li;N. Hurley-Walker;J. Callingham;N. Seymour;S. Yoshiura;R. Joseph;Keitaro Takahashi;M. Sokołowski;J. Miller-Jones;J. Chauhan;I. Bojičić;M. Filipović;D. Leahy;H. Su;W. Tian;S. McSweeney;B. W. Meyers;S. Kitaeff;T. Vernstrom;G. Gürkan;G. Heald;M. Xue;C. Riseley;S. Duchesne;J. Bowman;D. Jacobs;B. Crosse;D. Emrich;T. Franzen;L. Horsley;D. Kenney;M. Morales;D. Pallot;K. Steele;S. Tingay;M. Walker;R. Wayth;A. Williams;Chen Wu
中科院分区：
文献类型：
--
作者：
A. Beardsley;M. Johnston-Hollitt;C. Trott;J. Pober;J. F. Morgan;D. Oberoi;D. Kaplan;C. Lynch;G. Anderson;P. McCauley;S. Croft;C. James;O. I. Wong;C. Tremblay;R. Norris;I. Cairns;C. Lonsdale;P. Hancock;B. Gaensler;N. Bhat;W. Li;N. Hurley-Walker;J. Callingham;N. Seymour;S. Yoshiura;R. Joseph;Keitaro Takahashi;M. Sokołowski;J. Miller-Jones;J. Chauhan;I. Bojičić;M. Filipović;D. Leahy;H. Su;W. Tian;S. McSweeney;B. W. Meyers;S. Kitaeff;T. Vernstrom;G. Gürkan;G. Heald;M. Xue;C. Riseley;S. Duchesne;J. Bowman;D. Jacobs;B. Crosse;D. Emrich;T. Franzen;L. Horsley;D. Kenney;M. Morales;D. Pallot;K. Steele;S. Tingay;M. Walker;R. Wayth;A. Williams;Chen Wu
默奇森宽场阵列（MWA）是一个开放式望远镜，致力于研究低频（80-300 MHz）南天。自2013年年中开始运行以来，MWA在南半球开辟了一个新的观测窗口，使许多科学领域成为可能。最初设计的驱动科学目标是观察再电离时代（EoR）的21厘米辐射，探索无线电时域，进行银河和河外调查，并监测太阳，日光层和电离层现象。所有60 +$的节目共录制了20 000小时，产生了146篇论文。2016年，望远镜进行了重大升级，导致紧凑和扩展配置交替。其他升级，包括数字后端和快速反应触发系统，已开发，因为原来的阵列委托。在本文中，我们回顾了MWA先前操作的主要结果，然后讨论了改进的能力所带来的新的科学路径。我们将这些科学机会按四个原始科学主题分组，但也包括这些类别之外的方向。
Abstract The Murchison Widefield Array (MWA) is an open access telescope dedicated to studying the low-frequency (80–300 MHz) southern sky. Since beginning operations in mid-2013, the MWA has opened a new observational window in the southern hemisphere enabling many science areas. The driving science objectives of the original design were to observe 21 cm radiation from the Epoch of Reionisation (EoR), explore the radio time domain, perform Galactic and extragalactic surveys, and monitor solar, heliospheric, and ionospheric phenomena. All together $60+$ programs recorded 20 000 h producing 146 papers to date. In 2016, the telescope underwent a major upgrade resulting in alternating compact and extended configurations. Other upgrades, including digital back-ends and a rapid-response triggering system, have been developed since the original array was commissioned. In this paper, we review the major results from the prior operation of the MWA and then discuss the new science paths enabled by the improved capabilities. We group these science opportunities by the four original science themes but also include ideas for directions outside these categories.