Dependence of the Interplanetary Magnetic Field on Heliocentric Distance between 0.3 and 1.7 AU from MESSENGER, ACE and MAVEN data

Cedar Hanneson, University of Alberta, Edmonton, AB, Canada, Catherine Johnson, Planetary Science Institute, Tucson, United States and Manar Al Asad, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada