Index of /~sylvain/research/preprints/AAS.224/extra

	Name	Last modified	Size	Description
	Parent Directory		-
	romg/	02-Sep-2014 10:50	-
	twist/	05-Jun-2014 09:52	-
	bd+ts-proj.pdf	30-May-2014 11:30	120K
	bd+ts-sgk.pdf	30-May-2014 11:29	121K
	butterfly-diagram.pdf	29-May-2014 17:07	133K

Sylvain G. Korzennik  |  About  |  Research  |  CV & LoP  |  HPC@SI

This directory holds a set of plots and animations.

  butterfly-diagram.pdf   butterfly diagram (and sunspot number) built from KPVT, MDI and HMI
                          synoptic magnetic observations, binned to a 36-day long sampling.

  bd+ts-sgk.pdf           comparison of the butterfly diagram to the so-called torsional 
                          oscillations (residual rotation rate), at the solar surface, 
                          inferred from frequencies resulting from SGK's fitting, using either
                          GONG or MDI+HMI observations (36-day long time series)

  bd+ts-proj.pdf          similar comparison, but with inferences from frequencies resulting 
                          from the respective project data analysis pipelines (NSO or SU), 
                          using GONG or MDI+HMI observations.

The directory romg/ holds animations of the residual rotation rate, shown as a
function of time, latitude and depth. The residual rotation is defined as the
rotation minus the mean rotation for Cycle 23 (i.e., the 4608 days --
64 x 72 days, or 12.62 yrs -- spanning 1996.05.01 to 2008.12.11.)

The scaling is +/- 2.5 nHz (2.5 nHz = 2.1 degree per Carrington rotation, or
2.8 degree per 36 days).

The directory twist/ hold animations of the evolution of the twist of a
pole-to-pole line by the changing residual rotation rate, shown at several
depths. A butterfly diagram (the symmetrized mean of the absolute value of the
magnetic field) is wrapped on the rotating sphere.

The different cases are:

  gong-sgk-036d.mp4    inversion of SGK's frequencies, using GONG observations (l=1,200),
                       fitting used 36-day long time series, one every 36 days, asymmetric profiles
  gong-sgk-072d.mp4                 72-day                             72 days
  gong-sgk-144d.mp4                144                                 72
  gong-sgk-288d.mp4                288                                144

  mdi+hmi-sgk-036d.mp4 inversion of SGK's frequencies, using MDI followed by HMI observations (l=1,300),
                       fitting used 36-day long time series, one every 36 days, asymmetric profiles
  mdi+hmi-sgk-072d.mp4             72-day                             72 days
  mdi+hmi-sgk-144d.mp4            144-day                             72 days

  gong-proj-108d.mp4        inversion of NSO's (GONG project) frequencies, using GONG observations (l=1,200),
                            fitting used 108-day  long time series, one every 36 days and symmetric profiles

  mdi+hmi-proj.sym-072d.mp4 inversion of Stanford's (MDI/HMI project) frequencies, using MDI followed by HMI observations (l=1,300),
                            fitting used 72-day long time series, one every 36 days and symmetric profiles

  mdi-proj.asym-072d.mp4    inversion of Stanford's (MDI/HMI project) frequencies, using MDI observations (l=1,300),
                            fitting used 72-day long time series, one every 36 days and asymmetric profiles

All the rotation inversions were carried out using Antonio Eff-Darwich latest code.

Note: these results correspond to VERSION=0 of HMI spherical harmonic
coeficients.

If you use these tables: references, acknowledgements and/or co-authorships are requested and appreciated. Remember, there is no free lunch :-}

Sylvain G. Korzennik  (skorzennik@cfa.harvard.edu)   CENTER FOR ASTROPHYSICS   |  HARVARD & SMITHSONIAN   |  60 GARDEN STREET  |   CAMBRIDGE, MA 02138