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VLBI observations of the G25.65+1.05 water maser superburst

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arxiv 1911.12634 v1 pith:CEGXCB3O submitted 2019-11-28 astro-ph.SR astro-ph.GA

classification astro-ph.SRastro-ph.GA
keywords maserobservationssuperburstvlbiformingregionstarwater
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abstract

This paper reports observations of a 22 GHz water maser `superburst' in the G25.65+1.05 massive star forming region, conducted in response to an alert from the Maser Monitoring Organisation (M2O). Very long baseline interferometry (VLBI) observations using the European VLBI Network (EVN) recorded a maser flux density of $1.2 \times 10^{4}$ Jy. The superburst was investigated in the spectral, structural and temporal domains and its cause was determined to be an increase in maser path length generated by the superposition of multiple maser emitting regions aligning in the line of sight to the observer. This conclusion was based on the location of the bursting maser in the context of the star forming region, its complex structure, and its rapid onset and decay.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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

    astro-ph.GA 2025-06 conditional novelty 6.0 of 10

    A pre-flare Space-VLBI observation of G25.65+1.05 resolves a compact 55.8 km/s H2O maser and shows the flaring feature was already double, supporting the overlapping-sheets flare model.

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