ABORAS: polarimetric, 10cm/s RV observations of the Sun as a star

Casper Farret Jentink; Annelies Mortier; Frans Snik; Patrick Dorval; Samantha J. Thompson; Ramon Navarro; Tim Naylor

doi:10.1117/12.2627113

29 August 2022 ABORAS: polarimetric, 10cm/s RV observations of the Sun as a star

Casper Farret Jentink, Annelies Mortier, Frans Snik, Patrick Dorval, Samantha J. Thompson, Ramon Navarro, Tim Naylor

Proceedings Volume 12182, Ground-based and Airborne Telescopes IX; 1218231 (2022) https://doi.org/10.1117/12.2627113
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We present a description of A dual-Beam polarimetric Robotic Aperture for the Sun (ABORAS), to serve as a Solar input with a dedicated Stokes V polarimeter for the HARPS3 high-resolution spectrograph. ABORAS has three main science drivers: trying to understand the physics behind stellar variability, tracking the long term stability of HARPS3, and serve as a benchmark for Earth-sized exoplanet detection with HARPS3 by injecting an Earth RV signal into the data. By design, ABORAS will (together with the HARPS3 instrument) be able to measure 10cm/s variations in RV of the integrated Solar disk and detect integrated magnetic field levels at sub 1 Gauss level through circularly polarized light.

Citation Download Citation

Casper Farret Jentink, Annelies Mortier, Frans Snik, Patrick Dorval, Samantha J. Thompson, Ramon Navarro, and Tim Naylor "ABORAS: polarimetric, 10cm/s RV observations of the Sun as a star", Proc. SPIE 12182, Ground-based and Airborne Telescopes IX, 1218231 (29 August 2022); https://doi.org/10.1117/12.2627113

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