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arXiv · 2506.01053

Radioastron probing the fine structure of the flaring H2O maser in star-forming region G25.65+1.05

N. N. Shakhvorostova·A. V. Alakoz·I. E. Val'tts·I. D. Litovchenko
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Abstract

The paper describes a Space-VLBI observation of the 22 GHz H2O masers in the massive star-forming region G25.65+1.05, using the 10-m space antenna of Radioastron together with the ground-based VLBA array. Two observing epochs at the pre-flare and post-flare state of the maser source are presented. Leveraging the exceptional angular resolution provided by space-ground baselines along with the broad UV coverage from VLBA baselines, we gained a detailed perspective on the area associated with the maser flare events.

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N. N. Shakhvorostova, A. V. Alakoz, I. E. Val'tts, I. D. Litovchenko. 2025-06-01. Radioastron probing the fine structure of the flaring H2O maser in star-forming region G25.65+1.05. https://arxiv.org/abs/2506.01053

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