Petroff, E.Abdalla, H.Barnard, M.Böttcher, M.Davids, I.D.Garrigoux, T.Ivascenko, A.Krüger, P.P.Pekeur, N.W.Seyffert, A.S.Spanier, F.Sushch, I.Van der Walt, D.J.Van Rensburg, C.Venter, C.Wadiasingh, Z.H.E.S.S. Collaboration2017-09-152017-09-152017Petroff, E. et al. 2017. A polarized fast radio burst at low Galactic latitude. Monthly notices of the Royal Astronomical Society, 469(4):4465-4482. [https://doi.org/10.1093/mnras/stx1098]0035-87111365-2966 (Online)http://hdl.handle.net/10394/25577https://doi.org/10.1093/mnras/stx1098https://academic.oup.com/mnras/article/469/4/4465/3807087/A-polarized-fast-radio-burst-at-low-GalacticWe report on the discovery of a new fast radio burst (FRB), FRB 150215, with the Parkes radio telescope on 2015 February 15. The burst was detected in real time with a dispersion measure (DM) of 1105.6 ± 0.8 pc cm−3, a pulse duration of 2.8+1.2 −0.5 ms, and a measured peak flux density assuming that the burst was at beam centre of 0.7+0.2 −0.1 Jy. The FRB originated at a Galactic longitude and latitude of 24.66◦, 5.28◦ and 25◦ away from the Galactic Center. The burst was found to be 43 ± 5 per cent linearly polarized with a rotation measure (RM) in the range −9 < RM < 12 radm−2 (95 per cent confidence level), consistent with zero. The burst was followed up with 11 telescopes to search for radio, optical, X-ray, γ -ray and neutrino emission. Neither transient nor variable emission was found to be associated with the burst and no repeat pulses have been observed in 17.25 h of observing. The sightline to the burst is close to the Galactic plane and the observed physical properties of FRB 150215 demonstrate the existence of sight lines of anomalously low RM for a given electron column density. The Galactic RM foreground may approach a null value due to magnetic field reversals along the line of sight, a decreased total electron column density from the Milky Way, or some combination of these effects. A lower Galactic DM contribution might explain why this burst was detectable whereas previous searches at low latitude have had lower detection rates than those out of the planeenPolarizationMethods: data analysisSurveysISM: structureArticle