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arXiv · 1804.02672

Bow shocks in water fountain jets

Gabor Orosz·José F. Gómez·Daniel Tafoya·Hiroshi Imai·José M. Torrelles·Ann Njeri Ngendo·Ross A. Burns
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Abstract

We briefly introduce the VLBI maser astrometric analysis of IRAS 18043-2116 and IRAS 18113-2503, two remarkable and unusual water fountains with spectacular bipolar bow shocks in their high-speed collimated jet-driven outflows. The 22 GHz H2O maser structures and velocities clearly show that the jets are formed in very short-lived, episodic outbursts, which may indicate episodic accretion in an underlying binary system.

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Gabor Orosz, José F. Gómez, Daniel Tafoya, Hiroshi Imai, José M. Torrelles, Ann Njeri Ngendo, Ross A. Burns. 2018-04-08. Bow shocks in water fountain jets. https://doi.org/10.1017/s1743921317009589

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