# Discovery of H2O Megamasers in Obscured Active Galactic Nuclei

## TL;DR

This study reports the discovery of water megamasers in obscured active galactic nuclei using radio observations, revealing a higher detection rate than previous surveys and providing new insights into these hidden cosmic objects.

## Contribution

It introduces a novel survey method combining X-ray and infrared data to efficiently find obscured AGNs with water megamasers.

## Key findings

- Detected water megamasers in 2 new obscured AGNs
- Achieved a 20% detection rate, higher than previous surveys
- Tentative detection in a third galaxy

## Abstract

Recently a new method to discover obscured active galactic nuclei (AGNs) by utilizing X-ray and Infrared data has been developed. We carried out a survey of H2O maser emission toward ten obscured AGNs with the Nobeyama 45-m telescope. We newly detected the maser emission with the signal-noise-ratio (SNR) of above 4 from two AGNs, NGC 1402 and NGC 7738. We also found a tentative detection with its SNR > 3 in NGC 5037. The detection rate of 20% is higher than those of previous surveys (usually several percents).

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Source: https://tomesphere.com/paper/1705.10473