Long-Term Monitoring and Interpretation of Flares in the H2O Maser Emission of IRAS 16293–2422

Colom, P.; Lekht, E.E.; Pashchenko, M.I.; Rudnitskii, G.M.; Tolmachev, A.M.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 3 октября 2016 г.

Авторы: Colom P., Lekht E.E., Pashchenko M.I., Rudnitskii G.M., Tolmachev A.M.
Журнал: Astronomy Reports
Том: 60
Номер: 8
Год издания: 2016
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 730
Последняя страница: 743
DOI: 10.1134/S1063772916080059
Аннотация: The results of a study of the H2O and OH maser emission from the cool IR source IRAS 16293−2422 are presented. The observations analyzed were obtained in H2O lines with the 22-m telescope of the Pushchino Radio Astronomy Observatory during 1999–2015 and in OH lines with the Nanc¸ay radio telescope (France). A large number of very strong flares of the H2O maser were detected, reaching fluxes of tens of thousands of Jansky. Individual features can form organized structures resembling chains ∼2 AU in length with a radial-velocity gradient along them. The observed drift of the H2O emission (2003–2004) in space and velocity (from 4.3 to 5.3 km/s) is not due solely to proper motion of the features. The other origin of the drift is a drift of the emission maximum during a flare as the shock consecutively excites spatially separated features in the structure in the form of a chain. The OH-line observations at 18 cm show that the emission remains unpolarized and thermal, with a line width of 0.7 km/s, which corresponds to a cloud temperature of ∼30 K.
Добавил в систему: Рудницкий Георгий Михайлович

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Long-Term Monitoring and Interpretation of Flares in the H2O Maser Emission of IRAS 16293–2422статья

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