论文标题

一氧化氮和其他分子:使用Murchison广场阵列的分子建模和低频率探索

Nitric Oxide and other molecules: Molecular Modelling and Low FrequencyExploration using the Murchison Widefield Array

论文作者

Tremblay, Chenoa D., Gray, Malcolm D., Hurley-Walker, Natasha, Green, James A., Dawson, Joanne R. Dawson R., Dickey, John M., Jones, Paul A., Tingay, Steven J., Wong, O. Ivy

论文摘要

我们为14NO和15NO提供了新的分子建模以及低无线电频率(99-129 MHz)的深,盲分线调查。这项调查是使用Murchison Wideffield阵列(MWA)完成的系列中的第三次调查,但与以前的调查相比,使用了四倍的数据(17小时而4小时),在角度分辨率(1'vs. 3')方面使用了三倍。一氧化氮及其主要同位素学的新分子建模在MWA频带内具有七个过渡(尽管我们也呈现了较高的频率过渡)。尽管我们没有以0.21 jy beam^-1的极限检测到任何新的分子线,但这项工作是理解未来平方英里阵列(SKA)的数据处理挑战的重要步骤,并对低频调查未来的预期限制了稳固的限制。该建模可用于未来对一氧化氮的搜索。

We present new molecular modelling for 14NO and 15NO and a deep, blind molecular line survey at low radio frequencies (99-129 MHz). This survey is the third in a series completed with the Murchison Widefield Array (MWA), but in comparison with the previous surveys, uses four times more data (17 hours vs. 4 hours) and is three times better in angular resolution (1' vs. 3'). The new molecular modelling for nitric oxide and its main isotopologue has seven transitions within the MWA frequency band (although we also present the higher frequency transitions). Although we did not detect any new molecular lines at a limit of 0.21 Jy beam^-1, this work is an important step in understanding the data processing challenges for the future Square Kilometre Array (SKA) and places solid limits on what is expected in the future of low-frequency surveys. The modelling can be utilised for future searches of nitric oxide.

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