Discovery of H2O megamasers in obscured active galactic nuclei
Discovery of H2O megamasers in obscured active galactic nuclei
复制标题
在被遮蔽的活动星系核中发现 H2O 巨震
DOI：
10.1093/pasj/psx052
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发表时间：
2017
影响因子：
2.3
通讯作者：
Ueno Saeko
中科院分区：
文献类型：
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作者：
Yamauchi Aya;Miyamoto Yusuke;Nakai Naomasa;Terashima Yuichi;Okumura Taishi;Zhou Bin;Taniguchi Kotomi;Kaneko Hiroyuki;Matsumoto Naoko;Salak Dragan;Nishimura Atsushi;Ueno Saeko
最近发展了一种利用X射线和红外数据发现活动星系核的新方法。利用Nobeyama 45 m望远镜对10个活动星系核进行了H2O脉泽观测。我们新近从两个活动星系核NGC 1402和NGC 7738中探测到信噪比大于4的脉泽辐射。我们还在NGC5037中发现了一个信噪比大于3的试探性探测。20%的检出率高于以往调查的检出率（通常为几个百分点）。
A new method to discover obscured active galactic nuclei (AGNs) by utilizing X-ray and infrared data has recently been developed. We carried out a survey of H2O maser emission toward 10 obscured AGNs with the Nobeyama 45 m telescope. We newly detected the maser emission with a signal-noise-ratio (SNR) of above 4 from two AGNs; NGC 1402 and NGC 7738. We also found a tentative detection withSNR> 3 in NGC 5037. The detection rate of 20% is higher than those of previous surveys (usually several percent).