GASKAP大規(guī)模巡天天區(qū)中目標(biāo)源查找工具的比較研究
發(fā)布時(shí)間:2018-01-08 20:05
本文關(guān)鍵詞:GASKAP大規(guī)模巡天天區(qū)中目標(biāo)源查找工具的比較研究 出處:《北京師范大學(xué)學(xué)報(bào)(自然科學(xué)版)》2014年03期 論文類型:期刊論文
更多相關(guān)文章: 巡天 源查找 Duchamp Clumpfind
【摘要】:在射電天文領(lǐng)域,SKA項(xiàng)目以及作為SKA早期項(xiàng)目如MeerKAT,APERTIF,ASKAP和中國(guó)的FAST的提出與建設(shè)很快就會(huì)將射電天文學(xué)帶入一個(gè)海量數(shù)據(jù)產(chǎn)生的新時(shí)代.這些海量的數(shù)據(jù)需要研究者搜集、管理、處理分析和存儲(chǔ),計(jì)算機(jī)控制下自動(dòng)分類篩選預(yù)處理迫在眉睫.尋找有效的方法在巡天收集的大量數(shù)據(jù)中來確定獨(dú)特的源的模擬工作正在進(jìn)行.針對(duì)GASKAP(ASKAP銀道面譜線巡天項(xiàng)目)目前用到的源查找工具主要有Duchamp、Clumpfind、Seleavy等.我們比較幾種工具找源的表現(xiàn),以提高目標(biāo)源查找的效率.
[Abstract]:In the field of radio astronomy, SKA project and SKA project as early as MeerKAT, APERTIF, ASKAP and Chinese FAST will soon be put forward to build a new era of radio astronomy to produce vast amounts of data. These data requires researchers to collect, manage, processing and storage, under the control of computer automatic classification screening the pretreatment is imminent. Finding an effective method in a large amount of data collected in the survey to determine the unique source of the simulation work is being carried out. According to the GASKAP (ASKAP silver road surface spectrum survey) source search tool currently used mainly include Duchamp, Clumpfind, Seleavy and so on. We compare several tools to find the source of the performance, in order to improve the efficiency of target search.
【作者單位】: 中國(guó)科學(xué)院國(guó)家天文臺(tái);北京師范大學(xué)信息科學(xué)與技術(shù)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金面上資助項(xiàng)目(211381001,Y211582001)
【分類號(hào)】:P161.5
【正文快照】: 射電天文面臨一個(gè)新的時(shí)代,隨著平方公里陣(SKA)以及它的前驅(qū)和探路者的到來(如澳大利亞平方公里陣探路者[1],卡魯陣列望遠(yuǎn)鏡[2]等),新型望遠(yuǎn)鏡(陣列)大規(guī)模的巡天使得觀測(cè)所得海量數(shù)據(jù)的及時(shí)處理變得至關(guān)重要.由于要搜索大量的數(shù)據(jù),源發(fā)現(xiàn)算法必須完全自動(dòng)化,曾經(jīng)普遍應(yīng)用的,
本文編號(hào):1398471
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