activity
20022022
most citedThe Formaldehyde Masers in NGC 7538 and G29.96-0.02: VLBA, MERLIN, and VLA Observations

58 citations · 306 across the 14 of their papers we have counts for

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Showing 2014 · astro-ph.GAShow all

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astro-ph.GA2014★ 10 cited

New Maser Emission from Nonmetastable Ammonia in NGC 7538. IV. Coincident Masers in Adjacent States of Para-ammonia

Ian M. Hoffman, Spenser A. Joyce

We present the first detection of para-ammonia masers in NGC 7538: multiple epochs of observation of the 14NH3 (J,K) = (10,8) and (9,8) lines. We detect both thermal absorption and…