PROGRESS REPORT THE SOLAR-A SOFT X-RAY TELESCOPE (SXT) PROGRAM (CONTRACT NAS8-00119) (for June-July 2002) OVERVIEW The YOHKOH Mission is a program of the Japanese Institute of Space and Astronautical Science (ISAS) with collaboration by the U. S. National Aeronautics and Space Administration and the U. K. Science and Engineering Research Council. The YOHKOH satellite was launched on 30 August 1991 from Kagoshima Space Center (KSC) in Japan. The purpose of this mission is to study high energy phenomena in solar flares and the Sun's corona. Under an international cooperative agreement, Lockheed Martin, under NASA contract, is providing a scientific investigation using the Soft X-ray Telescope (SXT), one of the primary experiments of the mission. The SXT was developed at the Lockheed Martin Solar and Astrophysics Laboratory in cooperation with the National Astronomical Observatory of Japan, and the Institute for Astronomy of the University of Tokyo. MAJOR PROGRAMMATIC ACTIVITIES IN THE MONTH All of the funding for FY 02 has been received and the contract option to terminate all operational activities and perform Project Galileo has been negotiated. HIGHLIGHTS A meeting of the Yohkoh/Galileo project was held in Nobeyama, Japan 10 and 11 July 2002. The purpose of this meeting was to achieve consensus and delegate responsibilities for creation of the ultimate archive of Yohkoh data. The successful meeting was attended by personnel from Japan, the U.K. and the U.S. Metcalf and Shirts improved the SXT leak correction by assuming that, after the leak correction, the corrected data image should be uncorrelated with the terminator image used to do the correction. This requirement alleviates the orbital dependence of the residual. On the other had there is more scatter with the new correction, but that should be correctable with some more work on this technique. PUBLICATIONS Papers submitted: "Unusual large-scale flaring structure," I. M. Chertok, H. S. Hudson, and S. W. Kahler, to EGS-10 proceedings, July 2002 "Narrow coronal holes in Yohkoh soft X-ray images and the slow solar wind," C. N. Arge, K. L. Harvey, H. S. Hudson, and S. W. Kahler, to Solar Wind 10 proceedings, July 2002 Papers accepted: Papers published: "Solar submm and gamma-ray burst emission," by P. Kaufmann, J.-P. Raulin, A.M. Melo, E. Correia, J.E.R. Costa, C.G. Gimenez de Castro, A.V.R. Silva, M. Yoshimori, H.S. Hudson, W.Q. Gan, D.E. Gary, P.T. Gallagher, H. Levato, A. Magun, and M. Rovira, ApJ 254, 1059 (2002). "Boundary structures and changes in long-lived coronal holes," H. S. Hudson and S. W. Kahler, ApJ 574, 467 (2002) "Simultaneous observation of a Moreton wave on Nov 3, 1999 in H-alpha and soft X-rays," N. Narukage, H. S. Hudson, T. Morimoto, S. Akiyama, R. Kitai, H. Kurokawa and K. Shibata, ApJ 572, L109 (2002). PUBLIC USE OF SXT IMAGES We are continuing to make Yohkoh/SXT images available for a variety of uses. We receive requests for the Yohkoh posters (#2 and #3) by way of the form on the SXT homepage. Currently we receive requests via our homepage at the rate of 2 or 3 per day. The WEB access statistics in June were 68,453 accesses and 5,808 Mbytes transferred for the SXT website and 140,206 accesses and 2,541 Mbytes transferred for the YPOP website. The WEB access statistics in July were 79,354 accesses and 7,799 Mbytes transferred for the SXT website and 154,381 accesses and 2,860 Mbytes transferred for the YPOP website. YOHKOH OPERATIONS AND HEALTH Data collection stopped on December 14 as a direct result of the near-total solar eclipse of that day, which Yohkoh intercepted over the Pacific Ocean midway between Hawaii and the Galapagos. This resulted in a loss of control and an under-voltage condition. Yohkoh is rotating at about 1 RPM around its Y axis (solar EW direction of motion) and slowly precessing. ISAS has abandoned attempts to regain control of the spacecraft. Page 4 PERSONNEL TRAVEL SXT Foreign Travel between 1-JUN-02 and 31-JUL-02 BARTUS 1-JUN-02 * 31-JUL-02 * 61 (total of 61 days) NITTA 25-JUL-02 31-JUL-02 * 7 (total of 7 days) TAKEDA 1-JUN-02 * 31-JUL-02 * 61 (total of 61 days) ---------------------------------------------------------------- Grand Total of 129 days for 3 people NOTE: The "*" signifies travel that actually ends after 31-JUL-02 SXT Foreign Travel between 1-AUG-02 and 30-SEP-02 BARTUS 1-AUG-02 * 30-SEP-02 * 61 (total of 61 days) NITTA 1-AUG-02 * 10-AUG-02 10 (total of 10 days) TAKEDA 1-AUG-02 * 30-SEP-02 * 61 (total of 61 days) ---------------------------------------------------------------- Grand Total of 132 days for 3 people NOTE: The "*" signifies travel that actually ends after 30-SEP-02 Respectfully submitted, Thomas R. Metcalf Frank Friedlaender Page 5 ========================================================== Montana State Univ Activity Report for June 2002-July 2002 ========================================================== (P. Martens) The MSU SXT group carried out research and data analysis, worked on the Galileo project, performed service and outreach, presented several SXT related talks and posters at meetings, and submitted the camera-ready proceedings of the Yohkoh 10th Anniversary meeting at Hawaii in January 2002 to Elsevier. SCIENCE McKenzie worked with Davina Markiewicz-Innes and Tong Jiang Wang on TRACE and SUMER data from the April 21 X flare, and began a paper describing the supra-arcade downflows observed by the two instruments. Worked with REU student Jessica Dunlap on Yohkoh data for four flares, in a collaborative analysis project with Jun Lin and Terry Forbes. Discussed space weather data and impact of space weather on small satellites with Bob Leamon and Shane Larson, for the LISA project. All but finished a paper on the relative timescales of chromospheric evaporation and magnetic loop shrinkage. Martens worked with students Jonathan Cirtain and Trae Winter on para- metrization and error determination fro DEM's determined from multiple space instruments including SXT, as well as on data analysis for of limb loops observed with CDS, TRACE, SXT, & EIT (JOP 146). SXT data, though broadband, provide excellent markers for the high temperature edge of a typical loop DEM. Acton continued his work on the mission-long SXT full-disk movie by optimizing calibration and stray-light subtraction. Sato revised the on-line version of the Yohkoh flare catalog to include saturated flares: http://solar.physics.montana.edu/sato/shxtdbase.html MEETINGS McKenzie, Sato, and Davey attended the AAS/SPD meeting in Albuquerque, New Mexico. During the week, a Galileo meeting was organized to discuss the data archive, as well as the Yohkoh contribution to the Virtual Solar Observatory, a on-line federated solar data library David McKenzie, Jun Sato, and Loren Acton traveled to Nobeyama Radio Observatory in Japan for a meeting of the Yohkoh Galileo Project, July 10-11, followed by the "Nobeyama one-day symposium on solar physics", July 12. TALKS & POSTERS Albuquerque SPD: Winter, H. D.; Martens, P. C. H., "Differential Emission Measure Error Analysis", Martens, P. C. H.; Cirtain, J. W.; Schmelz, J. T., " How to `Subtract' Spectrally Determined Intensities from a Coronal Loop on the Limb", Cirtain, J. W.; Schmelz, J. T.; Martens, P. C. H., "Methods of Temperature and Emission Measure Determination of Coronal Loops" McKenzie, D. E.; Gburek, S.; Acton, L. W.; Martens, P. C., "The Point Spread Function of the Yohkoh Soft X-ray Telescope". Gurman, J. B.; Bogart, R.; Hill, F.; Martens, P., "Building a Virtual Solar Observatory: I Look Around and There's a Petabyte Following Me"at the AAS/SPD, Jun Sato presented a poster on a RHESSI result and one on imaging performance using the MEM-Sato program. Nobeyama symposium on solar physics: "RHESSI images" by Jun Sato, "The Yohkoh Flare Catalogue" by Jun Sato, "Supra-arcade Downflows in the 21 April 2002 X Flare" by David E. McKenzie, Davina Markiewicz-Innes, and Tong Jiang Wang, "A Decade-Long Study of the Quiet Solar Corona" (poster) by Loren Acton. PUBLICATIONS The camera-ready proceedings of the January Yohkoh meeting in Hawaii, "Multi-Wavelength Observations of Coronal Structure and Dynamics -- Yohkoh 10th Anniversary Meeting", COSPAR Colloquia Series, Volume 13, P.C.H. Martens and D. Cauffman eds. (Elsevier: Dordrecht), have been received by Elsevier in Amsterdam on June 17. The book is due out in early fall. SERVICE AND OUTREACH David McKenzie maintained and updated the SXT website, and reformatted the SXT Chief Observer's weekly reports at http://solar.physics.montana.edu/nuggets/ and mirror sites at Lockheed, ISAS, and MSSL. Also, McKenzie composed two weekly nuggets. With Trae Winter, worked on updating the YPOP website, preparing to "freeze" it -- keep it online with no further updates. Began constructing a website for the Yohkoh Galileo project, at http://solar.physics.montana.edu/sxt/Galileo/ ==================================================================== Solar Physics Research Corp. Activity Report for June 2002-July 2002 ==================================================================== KAREN L. HARVEY (J. Harvey): Activities in June and July 2002: Several budget exercises occurred during this period that focused on close estimation of funding required to complete this subcontract by the end of October 2002. A related exercise with the Naval Research Lab for additional funding to support 1/3 of Aki Takeda was successful. An indirect cost proposal to DCAA was prepared and submitted that confirmed the indirect cost rate that SPRC has been using. An audit is pending. Plans for August and September: J. Harvey will continue to carry out management and contract functions. An additional funding increment will be required in September (within the presently negotiated total contract price). As work on this sub-contract draws to a close, various closeout activities will be started. Specifically, since Hugh Hudson's funding has been used up, SPRC will start the process of terminating operation as a foreign corporation in the state of California since SPRC no longer has any California-based employees. Also, various pieces of hardware funded under this and previous contracts will need to be disposed of in cooperation with Lockheed Martin. Any required final reports will be started. ************** HUGH S. HUDSON Activities in June and July: Aside from participation at meetings (Solar Wind 10, SPD, Yohkoh Galileo) most of my work has been at Berkeley on RHESSI observations. The meeting materials and associated papers mainly have dealt with Yohkoh observations of coronal holes, for which a lot of work remains. I think this is quite interesting stuff, since SXT really does see the CH boundaries with good angular and temporal resolution; since most users of solar-wind data work with models generated on one-day cadences (synoptic maps) there is plenty of room for better understanding of the detailed physics in the corona where the solar wind (after all!) originates. An example is the "day the solar wind stopped", which N. Nitta recently pointed out has never been explained properly on the solar side. Accordingly we had a brief science discussion at Berkeley involving Nitta and many of the heliospheric pundits here, generating a nugget and (I hope) pointing the way to a better understanding soon. Plans for August and September: First, an extension of the work started with Arge and Kahler on the subject of "narrow coronal holes," as reported at SW10. What seemed at first just an observational curiosity (skinny CHs penetrating near active regions) now seems likely to clarify the origin of the slow solar-wind streams and active region participation in wind formation. It is an ideal use of the SXT data and might lead us on to TRACE data as well. Second, Ilia Chertok (IZMIRAN) recently wrote a conference-proceedings paper based on an event reported in a science nugget, ie a two-sided jet of mammoth proportions. We have other examples and would like to think hard about writing a longer paper on such events, which appear to be flare-like analogs within filament channels - which also, you will recall, sustain non-flare-like heating as viewed in the "chewy nougat" phenomenon. PUBLIC SERVICE: Refereeing for ApJ, proofreading for a monograph. Helped or wrote science nuggets, including two on science items presented at the Nobeyama Galileo meeting. NUGGETS (various authors; published by DMcK): see http://solar.physics.montana.edu/nuggets/ 26-Jul-02: Footpoints slipping along 19-Jul-02: Supra-arcade downflows in the April 21 flare 12-Jul-02: Footpoints (and ankles?) 05-Jul-02: The "disappearing solar wind" revisited 28-Jun-02: A balloon, a novel detector, and solar hard X-rays 21-Jun-02: Slow solar wind coming from active regions 14-Jun-02: Properties of big flares in this cycle 07-Jun-02: The Yohkoh Galileo Project PRESENTATIONS: (see http://sprg.ssl.berkeley.edu/~hhudson/presentations/) "Soft-hard-soft spectral evolution at RHESSI resolution," H. S. Hudson, B. Dennis, S. R. Kane, R. P. Lin, J. McTiernan, R. Schwartz, and D. Smith, poster at SPD 2002 (Albuquerque) "Narrow coronal holes as sources of slow wind?" C. N. Arge, K. L. Harvey, H. S. Hudson, and S. W. Kahler, poster at Solar Wind 10 (Pisa) "Footpoint behavior," H. S. Hudson, Yohkoh Galileo science meeting (Nobeyama) LITERATURE: Papers submitted: "Unusual large-scale flaring structure," I. M. Chertok, H. S. Hudson, and S. W. Kahler, to EGS-10 proceedings, July 2002 "Narrow coronal holes in Yohkoh soft X-ray images and the slow solar wind," C. N. Arge, K. L. Harvey, H. S. Hudson, and S. W. Kahler, to Solar Wind 10 proceedings, July 2002 Papers published: "Solar submm and gamma-ray burst emission," by P. Kaufmann, J.-P. Raulin, A.M. Melo, E. Correia, J.E.R. Costa, C.G. Gimenez de Castro, A.V.R. Silva, M. Yoshimori, H.S. Hudson, W.Q. Gan, D.E. Gary, P.T. Gallagher, H. Levato, A. Magun, and M. Rovira, ApJ 254, 1059 (2002). "Boundary structures and changes in long-lived coronal holes," H. S. Hudson and S. W. Kahler, ApJ 574, 467 (2002) "Simultaneous observation of a Moreton wave on Nov 3, 1999 in H-alpha and soft X-rays," N. Narukage, H. S. Hudson, T. Morimoto, S. Akiyama, R. Kitai, H. Kurokawa and K. Shibata, ApJ 572, L109 (2002). ********** AKI TAKEDA Activities for June and July: On account of childbirth on 22nd June, I took a one-month maternity leave from mid-June to mid-July. The rest of the the period was spent on scientific research activity; specifically a study of the rotation of coronal holes. After the childbirth, I worked at home with the use of ADSL connection to ISAS. Network conditions were better than I expected. It allowed movies of 256 x 256 images running at the rate of 1 image/sec. ********************* JANOS BARTUS Activities for June and July, 2002: - Updated ssh versions for all the computers. - I installed MPI system with several implementations for all of our computers. This setup enables us to run MPI programs distributed on 7 processors. I tested the setup with MPI codes using MPI fast Fourier transformation library. According to those test MPI environment can provide reasonable speedups for large computations. More work would be necessary to use it for SSC generation. - There was a general nessus security check within ISAS. Some security hole were found so I had to update several programs on our computers, like apache webservers, php webscript environment, openssl environment. - I learnt perl and wrote several useful sysadmin script. - Computers were kept updated by RedHat network updates. - Everyday sysadmin tasks. - With Greg Slater, during his visit at ISAS, we discussed about setting up a new environment from the existing computers for the distributed FITs generation for the Galileo project. We purchased large capacity disks and I started to build a RAID-5 disk server out of them. I also had appointments with ISAS computer management staff to talk about the possible ISAS's contribution to this project. Plans for August and September, 2002: Continue to setup the computer environment for the Galileo project. Reorganizing the existing computer resources. New RAID systems will be purchased by ISAS for the Galileo FITs generation. I will setup isass0 to host them. Page 12 ------------------------------------------------------------------------------- NASA REPORT DOCUMENTATION PAGE (IN LIEU OF NASA FORM 1626) --------------------|--------------------------|------------------------------- 1. REPORT NO. | 2. GOVERNMENT | 3. RECIPIENT'S DR-01 | ACCESSION NO. | CATALOG NO. --------------------|--------------------------|------------------------------- 4. TITLE AND SUBTITLE | 5. REPORT DATE Monthly progress report - for the month of | 10 August 2002 June-July 2002 |------------------------------- | 6. PERFORMING ORG | CODE: O/L9-41 -----------------------------------------------|------------------------------- 7. AUTHOR(S) | 8. PERFORMING ORGANIZA- T. R. Metcalf | TION REPORT NO: F. M. Friedlaender | |------------------------------- -----------------------------------------------|10. WORK UNIT NO. 9. PERFORMING ORGANIZATION NAME AND ADDRESS | Lockheed Martin Missiles and Space |------------------------------- Advanced Technology Center, O/L9-41, B/252 |11. CONTRACT OR GRANT NO. 3251 Hanover Street, Palo Alto Ca. 94304 | NAS8 - 00119 -----------------------------------------------|------------------------------- 12. SPONSORING AGENCY NAME AND ADDRESS |13. TYPE OF REPORT AND Marshall Space Flight Center (Explorer Program)| PERIOD COVERED Huntsville Alabama 35812 | Progress report for the month Contact: Larry Hill | of June-July 2002 |------------------------------- |14. SPONSORING AGENCY | CODE MSFC / AP32 -----------------------------------------------|------------------------------- 15. SUPPLEMENTARY NOTES ------------------------------------------------------------------------------- 16. ABSTRACT The SOLAR-A Mission is a program of the Institute of Space and Astronautical Science (ISAS), the Japanese agency for scientific space activity. The SOLAR-A satellite was launched on August 30, 1991, to study high energy phenomena in solar flares. As an international cooperative agreement, Lockheed, under NASA contract, is providing a scientific investigation and has prepared the Soft X-ray Telescope (SXT), one of the two primary experiments of the mission. --------------------------------------|---------------------------------------- 17. KEY WORDS (SUGGESTED BY | 18. DISTRIBUTION STATEMENT AUTHOR(S)) Solar-A, X-ray, CCD, | Space Science, Solar Physics ------------------------|-------------|----------|-----------------|----------- 19. SECURITY CLASSIF. | 20. SECURITY CLASSIF. | 21. NO OF PAGES |22. PRICE (OF THIS REPORT) | (OF THIS PAGE) | | None | None | 10 | ------------------------|------------------------|-----------------|-----------