GONG

NSO staff meetingDec. 15, 2005

Science from continuous local helioseismology –

Ring Diagrams

Localized frequency shifts from 37 CRs

Rachel Howe

Meridional & zonal flows from 44 CRs North: black, South: greyRudi Komm, Amel Zaatri

Science from continuous local helioseismologyTime-Distance

Meridional travel time differences – 90 GM -- Shukur Kholikov, John Leibacher

Latitude (Degrees)

Lifetimes – Olga Burtseva, Dean-Yi Chou, Sasha Serebriansky

Science from continuous global helioseismology

Phase & amplitude of 11 yr sinusoid fit to torsional oscillation (Rachel Howe)

Frequencies from 9d time series (Sushant Tripathy, Kiran Jain & John Leibacher)

MDI OLA

GONG RLS

MDI RLS

Vorticity below strong flare producers

AR 10486

AR 10069

Rudi Komm, Douglas Mason

Farside imagesof AR10808

8/29/05

8/30/05

8/31/05

9/01/05

9/02/05

9/03/05

AR10808

Irene González-Hernández, Charlie Lindsey, Doug Braun, John Bolding, Cliff Toner, John Leibacher

Future science• First solar cycle will be completed in 2006

– What are flow characteristics of ascending vs descending phase?

• Space weather– Develop quick look flow maps & helicity activity

indicators– Calibrate far side signal, search for activity

thresholds• ESA Solar Orbiter participation

– Combine local helio products with high-latitude data

– Probe flows under the poles– Irene González-Hernández lead

• SDO/HMI Co-Is– Install rings and inversion pipelines with

community• HELAS participation

– European Network in Helio- and Asteroseismology

Modulator upgrade• New driver circuit

– Original driver has asymmetric switching time in and out of a retardation state

– New driver has equal switching time– Improves magnetogram zero-point by factor of 30,

down to 0.1 G• New modulators

– Thermally stabilized– Excellent optical quality

• Deployment – Scheduled for Feb-Mar 2006– In time for April 2006 STEREO Launch

Sometimes it gets better when you stare at it…George Luis, Tim Purdy, Mike Soukup, Jack Harvey

Magnetograms

Mauna Loa 200511110200

Jack Harvey, Gordon Petrie, Richard Clark, Cliff Toner, Harry Jones

Original modulator & circuit New modulator & circuit

New shelters & instrument• Learmonth shelter

– Finished (Jim Mason & Terry Bender)– To be shipped in January, installed in May 2006

• Hot spare– Shelter finished– Instrument components being reviewed, documented,

ordered, fabricated as necessary– Temporarily supporting seven NOAO ETS staff– Expect completion in FY 2007– Located at Tucson on standby– How to operate?

The new shelters

Data Management & Analysis Center • Hardware

– Five Linux servers– 60 TB disk (with mirroring)– Two Sun servers– LTO 180 tape library

• Linux– Porting slowly underway– Precision issues

• GRASP– Last monolithic release– Adopting CVS of individual major modules for more

flexibility and quicker pipeline upgrades

Data availability

• Nearly 50 consecutive rotations of local helioseismology results

• Ring diagram flow data on the web• Merged velocity images on the web• Frequencies up through end of 2004• Farside images every 12 hours on the web• Full-disk single-site magnetograms every

20 min on the web

Pipelines status• Calibration

– Automated image rejection (AIR) completed– Running on single Sun server

• Global p modes– Improved angular registration code (COPIPE II)

• Ring diagrams– Unchanged since last year

• Farside– Routinely running– Needs integration of full hemisphere analysis

• Time-distance– Ready to go, installation deferred due to resource constraints

• Magnetograms– High priority (modulator & STEREO Launch)– Gordon Petrie lead– Zero point correction for data from original modulator (Richard

Clark)– Histogram equating for merging (Harry Jones & Cliff Toner)

Major Meetings

• 2005:– Boulder HAO summer school– Bob Stein tribute

• 2006:– SOHO 18/GONG 2006/HELAS 1, Sheffield

UK– IAU General Assembly and Joint Discussion