Time monitoring observations of the 28SiO v = 0–2, J = 3–2 transitions were performed on an annual basis from 1995 to 1998 with the 14 m radio telescope at Taeduk Radio Astronomy Observatory toward Orion KL IRc2 containing the 28SiO v = 1, J = 2–1 maser emission. On 1996 March 1, a violent line profile variation with three spikes was detected in the high-velocity component of the SiO v = 2, J = 3–2 maser. The strongest spike, with VLSR = 20.5 km s-1, constituted a new appearance. We suggest that the line profile variation of the SiO v = 2, J = 3–2 maser is probably the result of time variations in bipolar outflows from a young stellar object in the Orion KL IRc2 region. In addition, our observational results show that the high-velocity component of the SiO v = 2, J = 3–2 maser is the most active.
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机译：从1995年到1998年，每年使用Taeduk射电天文台的14 m射电望远镜对Orion KL IRc2的包含28SiO v = 1的时间进行28SiO v = 0–2，J = 3–2过渡的时间监视观测。 J = 2-1 maser发射。 1996年3月1日，在SiO v = 2，J = 3–2 maser的高速分量中检测到三个尖峰的直线轮廓变化剧烈。 VLSR = 20.5 km s-1的最强峰值构成了新外观。我们认为，SiO v = 2，J = 3–2 maser的线轮廓变化可能是来自Orion KL IRc2区域中年轻恒星物体双极流出的时间变化的结果。此外，我们的观测结果表明，SiO v = 2，J = 3–2 maser的高速分量是最活跃的。
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