艾伦望远镜阵列Pi GHz巡天I. 巡天描述与牧夫座天区的静态星表结果
高能天体物理现象
2015-05-20 v2
摘要
Pi GHz巡天（PiGSS）是艾伦望远镜阵列的一个关键项目。PiGSS是对河外天空射电连续谱辐射的3.1 GHz巡天，重点在于测量天空静态和时变性质的同步观测。在2.5年的观测期间，PiGSS将对b > 30 deg的10,000 deg^2天区中的约250,000个射电源进行两次观测，均方根灵敏度达到约1 mJy。此外，天区的子区域将被多次观测，以表征天到年时间尺度上的变率。我们在此展示了对牧夫座中与NOAO深宽场巡天天区重叠的10 deg^2区域的观测结果。PiGSS图像由分布在4个月内的75次每日观测构建而成，其均方根通量密度在200至250 microJy之间。这比我们在整个10,000 deg^2区域将达到的深度深了4到8倍。我们提供了图像中检测到的425个源的通量密度、源尺寸和光谱指数。我们证认了约100个新的平谱射电源；我们预计PiGSS完成时将证认10^4个平谱源。我们证认了一个可能是暂现射电源的源。这次巡天对特征持续时间为数月的暗弱射电暂现源和变源提供了新的限制。
引用
@article{arxiv.1009.4443,
title = {The Allen Telescope Array Pi GHz Sky Survey I. Survey Description and Static Catalog Results for the Bootes Field},
author = {Geoffrey C. Bower and Steve Croft and Garrett Keating and David Whysong and Rob Ackermann and Shannon Atkinson and Don Backer and Peter Backus and Billy Barott and Amber Bauermeister and Leo Blitz and Douglas Bock and Tucker Bradford and Calvin Cheng and Chris Cork and Mike Davis and Dave DeBoer and Matt Dexter and John Dreher and Greg Engargiola and Ed Fields and Matt Fleming and R. James Forster and Colby Gutierrez-Kraybill and G. R. Harp and Carl Heiles and Tamara Helfer and Chat Hull and Jane Jordan and Susanne Jorgensen and Tom Kilsdonk and Casey Law and Joeri van Leeuwen and John Lugten and Dave MacMahon and Peter McMahon and Oren Milgrome and Tom Pierson and Karen Randall and John Ross and Seth Shostak and Andrew Siemion and Ken Smolek and Jill Tarter and Douglas Thornton and Lynn Urry and Artyom Vitouchkine and Niklas Wadefalk and Sandy Weinreb and Jack Welch and Dan Werthimer and Peter K. G. Williams and Melvyn Wright},
journal= {arXiv preprint arXiv:1009.4443},
year = {2015}
}
备注
Accepted for publication in ApJ; revision submitted with extraneous figure removed