MOF-based synoptic telescopes for LoS velocity and magnetic fields at different heights in the Sun's atmosphere
Co-author
Berrilli F., Jefferies S., Oliviero M., Del Moro D., Forte R., Giovannelli L., Magrì M., Murphy N., Pietropaolo E., Terranegra L., Viavattene G.
Main category
Natural Sciences (Astrophysics and Astrononmy)
Abstract
The Magneto Optical Filters at Two Heights (MOTH) experiment consists of two Doppler-magnetographs that each measure the Line-of-Sight (LoS) Doppler velocity and magnetic fields over the full solar disk at a given (different) height in the Sun's atmosphere. The MOTH uses magneto-optical filters (MOFs) at 589 nm (Na D2-line) and 770 nm (K D1-line) and looks at the photosphere low chromosphere region of the Sun's atmosphere (between 400 km and 700 km). The Tor Vergata Solar Synoptic Telescope (TSST) project started in 2011 in collaboration with people involved in MOTH experiment (IfA-University of Hawaii, Georgia State University and JPL) and uses a double telescope for full disk solar images, a MOF-based telescope operating at 770 nm (K D1-line) and a Hα Daystar SR-127 0.4A telescope. Real-time information about Hα structures and LoS velocity and magnetic maps at different solar layers will be the output of a MOF-based network of telescopes (MOTH, VAMOS, TSST and similar MOF-based instruments) to investigate and automatically detect flare location and associated velocity and magnetic features, an essential input to space weather prediction.
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