STSW Section

• STSW Home
• Overview
• Mission
• Activities
• CSAC
• CSAC Details
• Personnel
• Science
• Coronal Heating and Mass
• ProMag
• Coronal Siesmology Complication
• Coronal Hole Outflow
• Photosphere to Chromosphere Waves
• Scattering Polarization
• Frontier Research

Solar Transients and Space Weather (STSW)

Overview

• CSAC Heritage: CSAC builds upon HAO’s heritage in spectro-polarimetery (SP) contributing to the community through innovative instrumentation, analysis techniques, and scientific investigations surrounding the precision measurement of magnetic fields in the outer solar atmosphere.
• CSAC Goal: CSAC aims to provide a common repository for SP data analysis software and promote community involvement in and access to SP investigations.
• CSAC Embodies: Data reduction, analysis, and interpretation software in support of a diverse range of SP instruments currently in operation: SDO/HMI, Hinode/SOT/SP, DLSP, NSO/SPINOR, NSO/SOLIS, SST/SP
• Users: The active CSAC User Group contains 40 individuals (only those registered) from 18 institutes across the globe.
• Current Status:
  • CSAC inversion client is open to the community through webpage.
  • MERLIN (Milne-Eddington gRid Linear Inversion Network) Inversion Client processes Hinode/SOT/SP measurements (more than 5,000 SP maps inverted and served).
  • VFISV (Very Fast Inversion of the Stokes Vector) is the workhorse of the SDO/HMI vector magnetography effort.
• The Future:
  • ATST/ViSP development and support
  • COSMO Prototype instruments (CoMP, ProMag, and ChroMag) development.
  • Incorporation of advanced inversion algorithms (e.g., LILIA which computes atomic level populations in LTE and provides estimates of LOS variation in the inferred quantities) for the open client is ongoing.
  • Automated 180-degree azimuth disambiguation (AZAM) code published on site and will be run through the Hinode/SOT/SP archive in addition to CORA azimuth disambiguation algorithm.