| Autor: |
Said, N M M, Ellingsen, S P, Shabala, S, Orosz, G, Liu, J, Bignall, H E, McCallum, J N, Reynolds, C |
| Předmět: |
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| Zdroj: |
Monthly Notices of the Royal Astronomical Society; Dec2021, Vol. 508 Issue 2, p2881-2896, 16p |
| Abstrakt: |
We have investigated the evolution of the BL Lac object PKS B1144−379 using the University of Tasmania Ceduna 30-m radio telescope at a frequency of 6.7 GHz and very long baseline interferometry (VLBI) data at 8.6 GHz. Variability time-scales associated with two flares detected in 2005 November and 2008 August were derived from long-term variations in total flux density monitored by Ceduna between 2003 and 2011. A kinematic study of the parsec-scale jet of PKS B1144−379 was performed using VLBI data obtained between 1997 and 2018. Quasi-periodic flarings with a period of ∼3–4 yr were observed. Over the 20-yr interval, the average jet position angle was found to be ~150°. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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