<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Vlahakis, Nektarios</style></author><author><style face="normal" font="default" size="100%">Königl, Arieh</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Large-Scale Magnetic Fields in GRB Outflows: Acceleration, Collimation, and Neutron Decoupling</style></title><short-title><style face="normal" font="default" size="100%">Gamma-Ray Bursts: 30 Years of Discovery</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">95.30.Qd</style></keyword><keyword><style  face="normal" font="default" size="100%">98.70.Rz</style></keyword><keyword><style  face="normal" font="default" size="100%">Astrophysics</style></keyword><keyword><style  face="normal" font="default" size="100%">Gamma-ray bursts</style></keyword><keyword><style  face="normal" font="default" size="100%">Gamma-ray sources</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnetohydrodynamics and plasmas</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004/09/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2004AIPC..727..282V</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">AIP</style></publisher><volume><style face="normal" font="default" size="100%">727</style></volume><pages><style face="normal" font="default" size="100%">282 - 285</style></pages><isbn><style face="normal" font="default" size="100%">0094-243X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Using ideal magnetohydrodynamics we examine an outflow from a disk surrounding a stellar-mass compact object. We demonstrate that the magnetic acceleration is efficient (&gt;~ 50% of the magnetic energy can be transformed into kinetic energy of γ &gt; 10&lt;SUP&gt;2&lt;/SUP&gt; baryons) and also that the jet becomes collimated to very small opening angles. Observational implications, focusing on the case of an initially neutron-rich outflow, are discussed in Königl's contribution.</style></abstract></record></records></xml>