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Last modified: 02/09/10
| CXC/ACIS Operations |
| ACIS Operations Scientist On-Duty Schedule |
| ACIS OPERATIONS SUPPORT SCIENTIST | SI_MODE GENERATION SCIENTIST | |||||
|---|---|---|---|---|---|---|
| Week Of | Scientist | Work | Cell | Scientist | Work | Cell |
| Feb 8 - Feb 14 | Gregg Germain | 6-1558 | 617-785-0976 | Gregg Germain | 6-1558 | 617-785-0976 |
| Feb 15 - Feb 21 | Royce Buehler | 253-9766 | 617-851-8470 | Royce Buehler | 253-9766 | 617-851-8470 |
| Feb 22 - Feb 27 | Paul Plucinsky | 6-7726 | 617-721-4366 | Royce Buehler | 253-9766 | 617-851-8470 |
| Feb 28 - Mar 7 | Gregg Germain | 6-1558 | 617-785-0976 | Gregg Germain | 6-1558 | 617-785-0976 |
| Mar 8 - Mar 14 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 |
| Mar 15 - Mar 21 | Royce Buehler | 253-9766 | 617-851-8470 | Royce Buehler | 253-9766 | 617-851-8470 |
| Mar 22 - Mar 28 | Gregg Germain | 6-1558 | 617-785-0976 | Gregg Germain | 6-1558 | 617-785-0976 |
| Mar 29 - Apr 4 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 |
| Apr 5 - Apr 11 | Royce Buehler | 253-9766 | 617-851-8470 | Royce Buehler | 253-9766 | 617-851-8470 |
| Apr 12 - Apr 18 | Gregg Germain | 6-1558 | 617-785-0976 | Gregg Germain | 6-1558 | 617-785-0976 |
| Apr 19 - Apr 25 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 | Nancy Adams-Wolk | 6-7866 | 617-721-6763 |
| Apr 26 - May 2 | Paul Plucinsky | 6-7726 | 617-721-4366 | Royce Buehler | 253-9766 | 617-851-8470 |
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| Solar Cycle Info |

Above: This image, courtesy of Dr. Judith Lean at the
US Naval Research Laboratory, shows three extreme ultraviolet
(EUV) pictures of the Sun captured by the ESA/NASA Solar and
Heliospheric Observatory at different times during the current
solar cycle. In 1996, near solar minimum, the EUV Sun was nearly
featureless. Now, near the peak of the cycle, the Sun is dotted
by fiery regions of hot gas trapped in magnetic fields above
sunspots and plages. These active regions produce copious numbers
of EUV and X-ray photons that are absorbed in outer layers of
our atmosphere before they reach Earth's surface. The red curve
in the image is a computer model of the solar EUV flux at 304
Angstroms derived from ground-based Ca K images made at the Big
Bear Solar Observatory.
Above: By combining data about geomagnetic activity during the previous solar cycle with sunspot counts for the current cycle, David Hathaway and collaborators are able to predict when the next sunspot maximum will occur. [Click here for details]. According to their results, the sunspot number will peak beginning in mid-2000. The dotted lines above and below the solid curve line indicate the prediction curve's range of error. The vertical bars indicate the full range of daily sunspot numbers that were averaged to obtain monthly data points. Large excursions, like the one on April 2 when the daily Boulder sunspot number reached 301, are not uncommon.
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Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |