Speaker
Description
In 2003 the methanol maser source G009.62+0.20E was the first source discovered to show periodic variability, together with six other sources. To present, more than 30 methanol masers have been found to show periodic variability, with several different flare profiles amongst them. However, G009.62+0.20E have been extensively studied in the past, with several competing theories trying to explain this phenomena, a pulsating star (Inayoshi, et. al. 2013), rotating spiral shocks of circum-binary disk (Parfenov, et. al. 2014), and the Colliding Wind Binary (CWB) model (van der Walt, et. al. 2009, van der Walt. 2011, van der Walt, et. al. 2016, van den Heever, et. al. 2019). The results from the time series analysis show strong evidence of a high degree of stability over 22 years of monitoring. Together with results extending the work of van den Heever, et. al. 2019, to the data post 2014, still suggests the CWB model as the most likely candidate to explain the periodic flaring for sources with similar flare profiles to that of G009.62+0.20E.
| Stream | Science or Engineering |
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