HMI Magnetograms Using HMI to Study Facular Contrast
- Slides: 8
HMI Magnetograms Using HMI to Study Facular Contrast Functions SDO Workshop 14 Feb 2006 Thomas Berger@lmsal. com LWS Science Team Meeting, 23 Mar 2004, Boulder 1
TSI from Spots and Faculae LWS Science Team Meeting, 23 Mar 2004, Boulder 2
Prior Measurements SVST 630. 2 nm continuum data Topka, Tarbell, et al. Ap. J, 1997 Spatial resolution = 0. 5” m = 0. 31 – 0. 996 MDI 676. 8 nm continuum data Ortiz, Solanki, et al. A&A, 2002 Spatial resolution = 2” LWS Science Team Meeting, 23 Mar 2004, Boulder 3
New Measurements SST G-band AR 10377 06 -June-2003 m = 0. 6 q = 53° LWS Science Team Meeting, 23 Mar 2004, Boulder 4
New Measurements SST 630. 25 nm AR 10377 06 -June-2003 m = 0. 6 q = 53° LWS Science Team Meeting, 23 Mar 2004, Boulder 5
Replication of prior results Topka et al. , Ap. J 1997 LWS Science Team Meeting, 23 Mar 2004, Boulder 6
Using High Resolution LWS Science Team Meeting, 23 Mar 2004, Boulder 7
HMI and Irradiance • HMI Irradiance measurements • • Full-disk VECTOR magnetogram Continuum contrast (positions 1, 5) Line center contrast (position 3) Regular cadence (e. g. 3 X per day for life of mission) • Irradiance analyses • Continuum contrast vs. flux density vs. m • Continuum contrast vs. field strength vs. m • Line center contrast vs. same LWS Science Team Meeting, 23 Mar 2004, Boulder 8
