FLASHING: New high-velocity H2O masers in IRAS 18286−0959

The Nobeyama 45m radio telescope and VERA are operated by Nobeyama Radio Observatory and Mizusawa VLBI Observatory, respectively, branches of National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences. KVN in KaVA and the Daejeon Correlator in KJCC are operated by Korea Astronomy and Space Science Institute (KASI). Our data analysis was in part carried out on the common use data analysis computer system at the Astronomy Data Center, ADC, of NAOJ. HI and GO are supported by the MEXT KAKENHI program (16H02167). JFG is partially supported by MINECO (Spain) grant AYA2017-84390-C2-R (co-funded by FEDER) and by the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrof ' isica de Andaluc ' ia (SEV-2017-0709). HI and JFG were supported by the Invitation Program for Foreign Researchers of the Japan Society for Promotion of Science (JSPS grant S14128) and i-LINK+2019 Programme in IAA/CSIC. GO was supported by the Australian Research Council Discovery project DP180101061 of the Australian government, and the grants of CAS LCWR 2018-XBQNXZ-B-021 and National Key R&D Program of China 2018YFA0404602. DT was supported by the ERC consolidator grant 614264. RB acknowledges support through the EACOA Fellowship from the East Asian Core Observatories Association. LU acknowledges support from Convocatoria de Apoyo a la Investigacion Cientifica 2020 of the University of Guanajuato.