We report on the discovery of a new fast radio burst , 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 \pm 0.8 pc cm ^ { -3 } , a pulse duration of 2.8 ^ { +1.2 } _ { -0.5 } ms , and a measured peak flux density assuming the burst was at beam center of 0.7 ^ { +0.2 } _ { -0.1 } Jy .
The FRB originated at a Galactic longitude and latitude of 24.66 ^ { \circ } , 5.28 ^ { \circ } , 25 degrees away from the Galactic Center .
The burst was found to be 43 \pm 5 % linearly polarized with a rotation measure ( RM ) in the range -9 < \textrm { RM } < 12 rad m ^ { -2 } ( 95 % confidence level ) , consistent with zero .
The burst was followed-up with 11 telescopes to search for radio , optical , X-ray , \upgamma -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 hours 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 plane .