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RadioAstron probes the ultra-fine spatial structure in the H2O maser emission in the star forming region W49N

Authors :
Shakhvorostova, N. N.
Sobolev, A. M.
Moran, J. M.
Alakoz, A. V.
Imai, H.
Avdeev, V. Y.
Shakhvorostova, N. N.
Sobolev, A. M.
Moran, J. M.
Alakoz, A. V.
Imai, H.
Avdeev, V. Y.
Source :
Adv. Space Res.; Advances in Space Research
Publication Year :
2020

Abstract

H2O maser emission associated with the massive star formation region W49N were observed with the Space-VLBI mission RadioAstron. The procedure for processing of the maser spectral line data obtained in the RadioAstron observations is described. Ultra-fine spatial structures in the maser emission were detected on space-ground baselines of up to 9.6 Earth diameters. The correlated flux densities of these features range from 0.1% to 0.6% of the total flux density. These low values of correlated flux density are probably due to turbulence either in the maser itself or in the interstellar medium. © 2019 COSPAR

Details

Database :
OAIster
Journal :
Adv. Space Res.; Advances in Space Research
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1280535250
Document Type :
Electronic Resource