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SWAVES Status Report

SWAVES Status Report. SWG # 21, Dublin, 24/26 March 2010. Instrument status ( from last SWG). Both A & B receivers continue to function nominally No trend changes in HK parameters A few anomalies are tracked with vigor One unexpected/unexplained reset EEPROM error Missing DMA

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SWAVES Status Report

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  1. SWAVESStatus Report SWG # 21, Dublin, 24/26 March 2010

  2. Instrument status(from last SWG) • Both A & B receivers continue to function nominally • No trend changes in HK parameters • A few anomalies are tracked with vigor • One unexpected/unexplained reset • EEPROM error • Missing DMA • Operations continue to go well • Commands go up – with routine operations and special sequences • Telemetry comes down • Associated data products are produced and made available • Special situations are handled • e.g. S/C resets • Flight operations team at APL has been very accommodating • We have slowly evolved our flight software • To improve science • To investigate anomalies

  3. SWAVES Team Meeting in December (San Francisco) • - 30 attendees • ~20 presentations (main focus on in-situ, Langmuir Waves) • Presentations made available @ https://sympa.obspm.fr/wws • SWAVES Team Meeting in Dublin (~12 attendees, 8 presentations) Publications (S/WAVES focussed) 2005 : 3 2007 : 3 2008 : 10 2009 : 12 2010 : 5

  4. Data dissemination All the LFR/HFR high res., calibrated data are available @ http://cdpp.cesr.fr/ Direction Finding being implemented (Cecconi et al. On Friday) will be available soon @ CDPP TDS waveform events database in discussion S/WAVES data plotting software @ SSC: swavesplot GSFC website updates improved access to waves data include TDS data etc.

  5. swavesplot.pro available at SSC

  6. Science examples

  7. Figure 1: STEREO-A images from COR1, COR2, and HI1 immediately before (top panel) and during (bottom panel) the debris storm on 2007-12-24. Times of each image are shown, and the degradation to the scientific quality is evident.

  8. Began passage through L4 and L5 • Continue to see debris storms • HI1-A • Increasing in frequency year-to-year • No obvious heliocentric longitude effect • HI1-B • No change in frequency year-to-year • Some hint of longitude effect, but statistics are small • SWAVES continues to see triple-hits • A about 15% more than B, and no obvious longitude effect What’s Different (Jan 2007- Dec 2009)?

  9. Nano Dust Observations (presentation by Zaslavsky et al. on Friday) LFR + TDS TDS

  10. Typical waveform in magnetic hole Langmuir Electrostatic Decay Low energy Langmuir Caviton Langmuir waves in magnetic holes Briand, Soucek, Henri, Mangeney

  11. (2008-11-04) Krupar et al.

  12. swavesplot.pro available at SSC

  13. Radio Tracking of IP Mass Ejections? on March 13 - 14, 2010 Material continues to “blow out” from the Sun into the next day Major CME eruption at the end of March 13 Material is propagating through HI1 during the entire time period Eruption in NOAA 1054 at 3:00 UT on March 13, 2010 CME on March 12, 2010 NOAA 1054 STEREO B/ Wind Triangulation at 425 kHz STEREO A STEREO A STEREO A STEREO B Triangulation at 425 kHz locates the radio source at ~0.37 AU in a region of density 560 cm-3, corresponding to a density at 1 AU of n0 = 75 cm-3 Radio emissions are generated between 0.25 and 0.42 AU STEREO B Line-of-sight from STEREO B SWAVES 20o Source location at 425 kHz Line-of-sight from Wind Type III 11.5o STEREO A Wind

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