Landing page for project EJ024

Rapidly rotating and highly magnetic white dwarfs play an important role in the emission mechanisms and observational properties of their binary system. The representative sources are intermediate polar AE Aqr and radio pulsar AR Sco. Their unusual bright radio emissions are modeled as synchrotron components powered by the spin-down magnetic white dwarf. Recently, LAMOST J024048.51+195226.9 was confirmed as AE Aqr twin and ZTF J185139.81+171430.3 was reported as a candidate radio pulsar. Here we propose to probe the possible compact radio emissions of the two sources with e-EVN. VLBI observations can put tight constraints on the radio emission of these sources and provide a series of key information, such as brightness temperature, emission region scale, proper motion, etc., to help us further understand the interaction process with the rapidly rotating magnetosphere in white dwarf system. Follow-up VLBI astrometry observations will be proposed in future if the compact radio emission can be detected successfully in this exploratory observations.

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