Wide Field X-ray Surveys Wide Field X-ray Telescope (WFXT) and Notional Wide Field Imager (N-WFI)

被引：1

作者：

Murray, Stephen S. ^{[1
]}

机构：

[1] Johns Hopkins Univ, Baltimore, MD 21218 USA

来源：

SPACE TELESCOPES AND INSTRUMENTATION 2012: ULTRAVIOLET TO GAMMA RAY | 2012年 / 8443卷

关键词：

SOURCE CATALOG;

D O I：

10.1117/12.928288

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Wide field X-ray surveys require large field of view telescopes operating in a step and repeat or slow scanning mode in order to cover large areas of the sky efficiently. Here we discuss two similar, yet different designs for a wide field survey mission that can each be accomplished for a cost of less than similar to$1B (FY 2012) and that cover many hundreds to several thousand deg(2), with medium depth few x 10(-16) erg s(-1) cm(-2), and several 10's of degrees with very long exposure time to a depth approaching 3 x 10(-17) erg s(-1) cm(-2). We review the WFXT design and compare it with the Notional Wide Field Imager (N-WFI) concept that was developed by the NASA CST in response to a charge from NASA to define generic (or notional) missions that can accomplish some (or all) of the IXO science, but at a reduced cost.

引用

页数：8

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