An Analysis of the VLASS Proposal

An Analysis of the VLASS Proposal
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VLASS 提案分析

DOI:
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发表时间:
2015
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通讯作者:
J. Condon
J. Condon
中科院分区:
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文献类型:
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作者:
J. Condon

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拟议的VLA巡天(VLASS)包括两个不同的S波段(2- 4 GHz)巡天:(1)全天覆盖-40度以北的天空,均方根噪声69微焦耳/波束= 1.5 K,2.5角秒波束;(2)深覆盖10平方度,均方根噪声1.5微焦耳/波束= 0.32 K,0.8角秒波束。本综述比较了VLASS提案(2015年1月15日版本)的科学目标和技术能力,使用大部分带宽调查的性能指标的新计算。
The proposed VLA Sky Survey (VLASS) comprises two distinct S-band (2--4 GHz) surveys: (1) All-Sky covering the sky north of -40 deg with rms noise 69 microJy/beam = 1.5 K in the 2.5 arcsec beam and (2) Deep covering 10 square deg with rms noise 1.5 microJy/beam = 0.32 K in the 0.8 arcsec beam. This review compares the scientific goals and technical capabilities of the VLASS proposal (2015 Jan 15 version), using new calculations of performance metrics for surveys made with large fractional bandwidths.