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Title:	A polarized fast radio burst at low Galactic latitude
Author:	Rowlinson, A.; O'Sullivan, Michael; Anghinolfi, Marco; Anton, G.; Avgitas, T.; Bertin, V.; Puricelli, Stefano; Coniglione, R.; Gleixner, A; Lefèvre, Dominique; Michael, Turner; Pellegrino, Carlo; Piattelli, P.; Sanchez Losa, Agustín; Schnabel, J.; Trovato, A.; Zúñiga Román, Juan; Elejabarrieta, María Jesús; Schrenk, Bernhard; Hahn, James K.; Lamanna, G.; Moulin, Eric; Moya Señas, Ignacio; Santangelo, A; Schulz, André; Vink, J; Wagner, Peter; Yang, Rong; Zaborov, D.; André, Michel
Other authors:	Centre Tecnològic de Vilanova i la Geltrú; Universitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques
Abstract:	We 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 -0.5+1.2 ms, and a measured peak flux density assuming that the burst was at beam centre of 0.7 +0.2-0.1 -0.1+0.2 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¿rad¿m-2 (95¿per¿cent confidence level), consistent with zero. The burst was followed up with 11 telescopes to search for radio, optical, X-ray, ¿-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 plane.
Subject(s):	-Àrees temàtiques de la UPC::Física::Astronomia i astrofísica -Neutrinos -Radio telescopes -Astrophysics -Polarization -Methods: Data analysis -Surveys -ISM: structure -Neutrins -Astrofísica -Telescopis
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Submitted version Article
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