********************************************************************** Progress Report, Resident Archive Services and Maintenance of the Yohkoh Legacy data Archive. NNX09AH64G (2009.4.7 through 2011.4.6) Aki Takeda (P.I.), Loren Acton, David McKenzie, Keiji Yoshimura (Montana State University), and Samurel Freeland (Lockheed Martin Solar and Astrophysics Laboratory). ********************************************************************** (1) Achievement of the first year. We started our resident archive (RA) services in October, 2008, prior to the actual arrival of the relevant budget. Since then we have maintained our archive securely without major troubles, and served as the prime archive of the Yohkoh data products. In November, 2008, Takeda made an oral presentation in an international symposium, "Fifty Years after International Geophysical Year, - Modern Information Technologies and Earth and Solar Sciences -", held in Tsukuba, Japan. This is our first announcement to the public, on our RA services. The proceeding of this presentation was published as a refereed paper in Data Science Journal (Takeda et al., 2009). In October, 2009, McKenzie presented an invited talk to the 19th Astronomical Data Analysis Software and Systems (ADASS) meeting in Sapporo, Japan. The presentation, "Cycles of Activity: Acquiring, Preparing, and Exploiting X-ray Images of the Solar Corona" demonstrated to the international audience the worth of the YLA and availability of the data. We are proud to report that, in 2009, our web interface keeps more than 300 users constantly per month. Particularly in August through October, we had over 1000 users, each month. Note that the number of internal access (inside MSU) and that of several known search-engine robots are not included in these numbers. Also note that these number were measured not per hits but per users who visited one of our web pages (Number of hits are several times larger). Most users turned out to visit for reviewing images and movies through our Quick Look or customized Movie Maker services. Downloading value-added data (Level_1 and Level_2 data) from our archive follows next. Our E-consultant service so far received 13 consultations from 11 different researchers, including 5 consultations from outside the United States. Appendix 1 is a brief summary of the consultations. Some are just a quick inquiry or bug report, others are seeking research collaboration. We also received 5 requests from publishers and educators asking for permission to use the Yohkoh images. After 8 years from the end of Yohkoh mission, the publication of the scientific papers using Yohkoh data continues. In 2009, there reported at least 10 papers published in major journals. The papers published in 2009 are listed in Appendix 2. In October, 2009, as proposed we purchased a new PC with disk arrays, to house the most part of the YLA products and web service tools. The initial performance was tested successfully and the system is ready for replacement. We are now waiting for the response from the department regarding the final location of our server, since they are planning to remodel the server room. As our effort for the education and public outreach, we participated a local educational event for middle school girls, "Expand Your Horizon, 2009" held in April, 2009, at Montana State University. We provided Yohkoh full-sun images observed on the birthday of the students, since the Yohkoh mission well covers the birthdays of the current middle schoolers. This activity received a good reputation from both the students and organizer. We are thus planning to participate the 2010 event, also. (2) Plans for the second year. Modernization of the analysis software is under way, so that our traditional software can accommodate the recent common file format (FITS) and the updated atomic data. So far we successfully modified a series of software for data browsing to work with FITS. We are now working on the software for temperature analysis to adopt the recent atomic database released by CHIANTI. Our long-term effort to improve the quality of the SXT images is finally coming to its end stage. Following this, we are in preparation for exporting our recent Level_2 products (SSC FITS) to VSO. It includes the creation of the thumbnail images, and updating VSO database. We also plan to contact VSO group and find the way for our products to be searched more efficiently through VSO, which might be achieved by improving the VSO interface. In this February, or as soon as it is ready, we plan to submit the announcement to the solar and geophysical community of our RA services and the completion of the final (hopefully) products. We also plan to submit several papers to describe our archive and calibration details in 2010. Due to a large number of access and positive responses we received so far, we pride ourselves on being an active and well-maintained archive. It is our strong desire that, through the YLA RA services, we continue our contribution to the scientific community and to the public education as long as possible. We therefore appreciate the smooth transferring of the second year budget to MSU. Also, we plan to apply for the extension of the RA services beyond the present grant period. == Reference == Takeda, A., Acton, L., McKenzie, D., Yoshimura, K. and Freeland, S. Data Science Journal, 2009, vol.8, pp.IGY1-IGY5 "Resident Archive Services of the Yohkoh Legacy data Archive" == Appendix 1. == E-consultant services we received. Only dates, the institutes of the rearchers, and the type of consultation are shown. --------------------------------------------------------------- 29-Oct-2008, California State University, Northridge, data request & analysis support. 03-Mar-2009, California State University, Northridge, data request & analysis support. 09-Apr-2009, Predictive Science Inc., California, inquiry. 23-Apr-2009, Swedish Institute of Space Physics, inquiry. 04-May-2009, Wright State University, Ohio, data request & analysis support. 04-May-2009, Geomagnetic Laboratory, Geological Survey of Canada, Natural Resources Canada), data request. 18-Jun-2009, PPN PG College, Kanpur, India, inquiry. 06-Jul-2009, Alabama Agr.& Mech. University, inquiry. 08-Jul-2009, University of Potsdam, Germany, analysis support 13-Jul-2009, Wright State University, Ohio, data request & analysis support. 17-Jul-2009, Universidad Tecnologica Naciona, Argentina, inquiry. 14-Sep-2009, Harvard-Smithsonian, Center for Astrophysics, MA, inquiry 04-Dec-2009, University of California, Barkley, analysis support. --------------------------------------------------------------- == Appendix 2. == Yohkoh related papers published in 2009. --------------------------------------------------------------- Hara,H. 2009, The Astrophysical Journal, 697, 980-984 Differential Rotation Rate of X-ray Bright Points and Source Region of their Magnetic Fields Lean,J.L., Picone, J. M., & Emmert, J. T. 2009, Journal of Geophysical Research (Space Physics), 114, 7301 Quantitative forecasting of near-term solar activity and upper atmospheric density Lionello,R., Linker, J. A., & Mikic, Z. 2009, The Astrophysical Journal, 690, 902-912 Multispectral Emission of the Sun During the First Whole Sun Month: Magnetohydrodynamic Simulations McKenzie,D.E. and Savage,S.L. 2009, The Astrophysical Journal, 697, 1569-1577 Quantitative examination of supra-arcade downflows in eruptive solar flares Shin,J. and Sakurai,T. 2009, Solar Physics, 254, 357-384, 385-386 Optical characteristics of the soft X-ray telescope aboard Yohkoh. I. Interpretation of the undersampled point spread function Shin,J., & Sakurai, T. 2009, Advances in Space Research, 43, 101 Studies on the imaging characteristics of Yohkoh Soft X-ray Telescope: Optical aberration and scattering Takeda, A., Acton, L., McKenzie, D., Yoshimura, K. and Freeland, S. Data Science Journal, 2009, vol.8, pp.IGY1-IGY5 Resident Archive Services of the Yohkoh Legacy data Archive Tomczak,M. 2009, Astronomy and Astrophysics, 502, 665 The YOHKOH survey of partially occulted flares in hard X-rays Vekstein,G.E. 2009, Astronomy and Astrophysics, 499, L5-L8-L8 Probing nanoflares with observed fluctuations of the coronal EUV emission Yokoyama,T., & Masuda, S. 2009, Solar Physics, 254, 285-296 Formation Mechanism of Soft X-Ray Transient Trans-Equatorial Loop System --------------------------------------------------------------- ====== end of report =====