Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe..85m&link_type=abstract
"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199
Astronomy and Astrophysics
Astronomy
Scientific paper
In this work we study flares of the H2O maser emission in some Star- Forming Regions. Data of flares recorded by single-dish observations at Pushchino, Russia, in the 1.35 cm line, are used. We analyze the evolution of the flux time curves of the channels where a flare was observed. The aim is to study the evolution of the line shape for the more strong spectral features during flares. For some features a relation between the flux and linewidth was early observed in Ori A and G43.8-0.1. Probably in these cases there is competition between different modes of emission for pumping. This could lead to the appearance of asymmetries of the line shape. The analysis of the flux time curves of the channels, where the flare occurred, allows to study this phenomenon. Among the H2O maser sources studied here are S252A, ON1, ON2 and S128. The possible causes of the variations found in these sources are discussed.
Juarez Aaron J.
Mendoza-Torres Jose E.
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