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Interstellar scintillation of radiosources as a probe for investigations of the local interstellar mediumстатья
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Bochkarev N.G., Ryabov M.I.
- Журнал: Astronomical and Astrophysical Transactions
- Том: 13
- Год издания: 1997
- Издательство: Cambridge Scientific Publishers
- Местоположение издательства: Cambridge
- Первая страница: 261
- Последняя страница: 271
- DOI: 10.1080/10556799708202968
- Аннотация: Based upon numerous observational data of variability in extragalactic radiosources of the Northern and Southern sky at low frequencies the possibility of obtaining information on ionized component structure in the local interstellar medium (LISM) is investigated. Isophot maps of scintillation index based upon these data were constructed in the galactic coordinate system on 80 MHz and 160 MHz for 1 month and 1 year time intervals of source variability. In the direction where scintillation indicates increase, regions of interaction of interstellar wind with large-scale structure of the LISM are located. Regions of decreased scintillation indices are observed towards the third galactic quadrant (near l = 240\deg), there is a gas-free tunnel. Long-term observations of the sample from over 50 extragalactic radiosources using the radiotelescope DKR-1000 at a frequency of 102 MHz are used to justify the method of determing the distribution character of the LISM ionized component.
- Добавил в систему: Бочкарев Николай Геннадиевич