DOI

https://doi.org/10.48717/ch1q-cd45

Project

RSG17

Title

e-EVN: EA065I, EC082E, RSG17

Abstract

Given the low elevation of our target source (-12 deg), we wish to ensure we have a high quality phase-referencing calibrator. We previously used J1118-1232 for our VLBA observations, but want to test the quality of a few much closer (d<=0.85 deg vs. d=2.1 deg) calibrators, which could improve the astrometry. Since these potential calibrators are fainter and their positional accuracy in the RFC database is not as good, we need a short e-EVN observation to verify whether they can actually provide an improvement in the calibration strategy. Moreover, this run would also help us update our target position before our long run from a separate, approved EVN proposal, in the case there has been apparent proper motion since the last time we observed the source. A 3 hour observation would suffice for these purposes. We are aiming for observations in 2022 Session 3, jointly with LBA (coordinated ATNF proposal submitted) and it is therefore critical that the test is carried out no later than in the e-VLBI September session.