Landing page for project GC039

Previous VLBI observations of LSR J1835+3259 demonstrate the presence of an extended magnetosphere in this object with a morphology compatible with the presence of a radiation belt, similar to that of Jupiter and Earth. The same observations showed the first milliarcsecond images of the auroral emission originated in this ultracool dwarf.We propose global VLBI observations at 5 GHz to further investigate the morphological changes of LSR J1835+3259 magnetosphere with rotation, aiming to distinguish between different emission mechanisms and understand the nature of its extended magnetosphere. We request global VLBI, full polarization observations to obtain both circular and linear polarization products. Our main goal is detecting LSR 1835+3259 in linear polarization, which will unambiguously confirm for the first time the existence of a radiation belt beyond our solar system. These observations will contribute to our understanding of the emerging field of UCD magnetospheres.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197