Wuester, SebastianSavage, Craig2015-12-071050-2947http://hdl.handle.net/1885/28009Quasi-one-dimensional outflow from a dilute gas Bose-Einstein condensate reservoir is a promising system for the creation of analog Hawking radiation. We use numerical modeling to show that stable sonic horizons exist in such a system under realistic conditions, taking into account the transverse dimensions and three-body loss. We find that loss limits the analog Hawking temperatures achievable in the hydrodynamic regime, with sodium condensates allowing the highest temperatures. A condensate of 30 000 atoms, with transverse confinement frequency ω =6800×2π Hz, yields horizon temperatures of about 20 nK over a period of 50 ms. This is at least four times higher than for other atoms commonly used for Bose-Einstein condensates.Keywords: Atomic physics; Gas dynamics; Hydrodynamics; Thermal effects; Bose-Einstein condensate reservoir; Hawking radiation; Quasi-one-dimensional outflow; Sodium condensates; Bose-Einstein condensation200710.1103/PhysRevA.76.0136082015-12-07