Roger K. Ulrich Astronomy Office: PAB 3-431 Phone: (310)825-4270 Fax: (310)206-2096 ulrich@astro.ucla.edu Torsional Oscillation Background Image

Access to solar images dating from 1906. Lecture notes on stellar evolution and quantum mechanics. Solar spectral line profiles

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The Mt. Wilson Photographic Archive contains spectroheliograms taken in the light of ionized Calcium. These provide indicators of excess solar energy output and can be used to estimate long-term solar influences on climate.

The Mount Wilson Photographic Archive Digitization Project images: raw CaK fits files for 1915-1985 and intensity calibrated files for 1961-1985 fits and some pdf files.

Simulated Rotation Movie, 4 Mbytes

Structure and Evolution of Stars -- Astronomy 272, Winter 2006 Stellar Astrophysics -- Astronomy 127, Winter 2010 Black Holes, Cosmic Catastrophies, Spring 2008 Syllabus PhD Thesis by Tham Tran: Improving the Predictions of Solar Wind Speed and Interplanetary Magnetic Field at the Earth PhD Thesis by Daryl Parker: Variations in Solar Activity and Irradiance and Their Implications for Energy Input Into the Terrrestrial Atmosphere

Ongoing Project: The Mt. Wilson 150-foot Solar Tower Synoptic Program, System Upgrades of 1996 Cycle 24 Estimate Based on Data up to March, 2007 Poster at 2009 SPD, Boulder (28Mbytes): PIXEL BY PIXEL AUTOMATED CLASSIFICATION OF MT. WILSON OBSERVATORY IMAGE PAIRS AND MODELING THE TOTAL SOLAR IRRADIANCE Updates to Supersynoptic Charts, Feb. 2009 Modeling TSI Variations Using Mt. Wilson Data Preprints. Publications in hard-to-find volumes. Conference and Other Presentations. Selected Publications. Solar Seismology from Space. (Fully scanned as of 2/2005) NiI 6768Å, Tabular Data, Explanation FeI 6173Å FeI 5250Å, Mean Line-of-Sight Field , Explanation Na D Magnetograms - Potential Field Comparison SHINE Campaign Heliographic Maps

This simulated rotation movie is based on seven spectroheliograms taken on successive days in 1925 between July 7 and July 13. It shows that many features last more than 24 hours.

1906 Ca Spectroheliogram

This simulated rotation shows the magnetic field as viewed from a position 60 degrees above the solar equator. The Solar Polar Imager mission under study by NASA would provide magnetograms from this viewing angle. This is a 5.0 MB quicktime movie file.

MDI MWO Cross-Calibration, MDI Reductions with MWO software

Algorithm comparison polar views: MWO, MDI_Stanford, MDI_UCLA

NSF Space Weather Proposal Draft

Recent Publications:

	Ulrich, R.K., et al., 2002ApJS..139..259U, Mt. Wilson Synoptic Magnetic Fields (ADS Abstract), (pdf summary, 3 Mbytes)
			Bastille Day 2000			Magnetic Maps
	Ulrich, R.K., 2001ApJ...560..466U, Very Long-lived Solar Surface Velocity Waves (ADS Abstract)
			Power Spectra			Rotation Rates
	Ulrich, R.K., 2005ApJ...620L..123U, The Solar Surface Toroidal Magnetic Field (preprint, in press, 8.7 Mbytes)
		Time and Latitude dependence of the toroidal field.
	Gabriel, A.H. et al., 2002A&A...390.1119G, A search for solar g modes in the GOLF data. (ADS Abstract)
			Sample Power Spectrum
						Observed Peak Frequencies

AGU Dec. 2004 Powerpoint: A presentation given at the AGU 2004 winter meeting can be downloaded. One version uses a 130Mbyte avi Movietone clip from 1930. A second version uses a 20 Mbyte avi of the movie clip. Both video clips are played from inside the powerpoint presentation.