Number: JOP041 JOINT CDS/MDI/SUMER PROGRAMME Connection between Transition Region Lines and the Photospheric Magnetic Field Olav Kjeldseth-Moe & Per Maltby, ITA, University of Oslo, Richard A. Harrison, RAL, & Klaus Wilhelm, MPI-Ae Scientific Justification The state of the solar plasma located in the transition region, is likely to be controlled by the magnetic field penetrating the region. Knowledge about the magnetic field in the transition region is scanty and confined to the sunspot region. Accordingly, the connection between transition region line characteristics and the magnetic field thus has to be based on measurements of the magnetic field at photospheric heights. It has been argued Schrijver (1990) that a point to point comparison of transition region line intensities and the photospheric magnetic field is not physically meaningful. Recently, Brynildsen, Kjeldseth-Moe, & Maltby (1994, 1996) have studied the quiet Sun relation between the CIV resonance line parameters and the photospheric magnetic field with a spatial resolution of 1''x 1''. They ordered the material into groups according to the magnitude of the magnetic flux density |B|, calculated conditional probabilities and found that redshifted profiles with either high intensity, large Doppler shift, or large line broadening occupy an increasing fraction of the area when |B| increases. These results were contrasted by blueshifted profiles which indicated a slight decrease with increasing magnetic flux density. Further studies of the connection between transition line parameters and the photospheric magnetic field are required in order to explore the potential of the conditional probability calculations and study in detail the connection between transition region lines and the photospheric magnetic field, both in the quiet Sun and in active regions. References: Brynildsen, N., Kjeldseth--Moe, O., & Maltby, P. 1994, Proc. Third SOHO Workshop, ESA SPC--373, 413 Brynildsen, N., Kjeldseth--Moe, O., & Maltby, P. 1996, ApJ (in press) Schrijver, C. J. 1990, A & A, 234, 315 CDS Study Detail Phase 1 - ------- Spectrometer: Normal Incidence Slit: 90 x 240 arcseconds Raster Area: 240 x 240 arcseconds Step (DX,DY): 50 arcseconds, 0 arcseconds Raster Locations: 4 x 1 = 4 Exposure Time: 10 seconds Duration of Raster: 124 seconds Number of Rasters: 4 Total Duration: 496 seconds Line Selection: Mg IX 368.06, He I 584.33, O V 629.73 Bins Across Line: 60 Telemetry/Compression: truncate to 12 bits Phase 2 - ------- Spectrometer: Normal Incidence Slit: 2 x 240 arcseconds Raster Area: 120 x 240 arcseconds Step (DX,DY): 2 arcseconds, 0 arcseconds Raster Locations: 60 x 1 = 60 Exposure Time: 20 seconds Duration of Raster: 1392 seconds Number of Rasters: 3 Total Duration: 4176 seconds Line Selection: Mg IX 368.06, He I 522.20, O III 525.80, He I 584.33, O III 599.59, O V 629.73 Bins Across Line: 21 Telemetry/Compression: truncate to 12 bits Phase 3 - ------- Spectrometer: Normal Incidence Slit: 2 x 240 arcseconds Raster Area: 8 x 240 arcseconds Step (DX,DY): 2 arcseconds, 0 arcseconds Raster Locations: 4 x 1 = 4 Exposure Time: 1000 seconds Duration of Raster: 4363 seconds Number of Rasters: 1 Total Duration: 4363 seconds Line Selection: Full CCD output Bins Across Line: Full CCD Telemetry/Compression: truncate to 12 bits Pointing: To pre-planned location Flags: No flag during this study Solar Feature Tracking: On Frequency: Product Phase 1: 240 x 240 arcseconds raster Phase 2: 120 x 240 arcseconds raster Phase 3: 8 x 240 arcseconds raster Phase 1: 240 x 240 arcseconds raster Total duration 158.9 minutes Joint Observation SUMER, MDI Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 0 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 3 (up) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 10. RSC hold time: 448.000 ms 11. RSC step size: 1.14000 arcsec 12. RSC group number: 2 13. Number of initial RSC scans: 1 16. The total duration of the RSC scan activity will be approximately 44 s. The range of the scan will be 114 arcsec and will be covered 1 time(s) 17. Your selection requires a mean telemetry rate of: 9.14286 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 0.746667 minutes Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 0.746667 minutes You will use for this item: 0.0232000 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.0232000 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 1 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 7 (centred) with 0.3*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 18. No compression. 7. Reference pixel 1: 511 on detector A Flat-field correction: OFF Ion(s) in band 1: VIRTUAL .... 990.297 Angstroem Spectral window(s) (pixel): 1024 8. Image format: Format #5 (1024*120, B2); 1 time(s) 9. Spectrohelio mode: Spectrohelio 3 Integration time: 100.000 s Step size: 0.00000 arcsec or 0 units. Image number: 1 17. Your selection requires a mean telemetry rate of: 19.6608 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 1.68480 minutes and will cover a solar area defined by 120 px time(s) 0.00000 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 2.43146 minutes You will use for this item: 0.247182 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.145382 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 2 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 7 (centred) with 0.3*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 5. Quasilog_min_max (0.92 s). 7. Reference pixel 1: 810 on detector A Flat-field correction: OFF Ion(s) in band 1: C III .... 977.020 Angstroem N III .... 991.579 Angstroem Spectral window(s) (pixel): 50 8. Image format: Format #10 (50*120, B1); 2 time(s) 9. Spectrohelio mode: Spectrohelio 3 Scans back and forth. Integration time: 4.00000 s Step size: 1.14000 arcsec or 3 units. Step number: 105 Step mode: Normal steps Repetition number: 3 Staggering: 1 17. Your selection requires a mean telemetry rate of: 24.0000 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 21.8777 minutes and will cover a solar area defined by 120 px time(s) 119.700 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 24.3092 minutes You will use for this item: 2.30227 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 2.44265 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 3 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 4 (centred) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 18. No compression. 7. Reference pixel 1: 511 on detector A Flat-field correction: OFF Ion(s) in band 1: VIRTUAL .... 1388.96 Angstroem Spectral window(s) (pixel): 1024 8. Image format: Format #5 (1024*120, B2); 1 time(s) 9. Spectrohelio mode: Spectrohelio 3 Integration time: 100.000 s Step size: 0.00000 arcsec or 0 units. Image number: 1 17. Your selection requires a mean telemetry rate of: 19.6608 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 1.68480 minutes and will cover a solar area defined by 120 px time(s) 0.00000 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 25.9940 minutes You will use for this item: 0.247182 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 2.56483 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 4 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 4 (centred) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 5. Quasilog_min_max (0.92 s). 7. Reference pixel 1: 400 on detector A Flat-field correction: OFF Ion(s) in band 1: SI IV .... 1393.75 Angstroem Spectral window(s) (pixel): 50 8. Image format: Format #10 (50*120, B1); 1 time(s) 9. Spectrohelio mode: Spectrohelio 3 Scans back and forth. Integration time: 10.0000 s Step size: 1.14000 arcsec or 3 units. Step number: 105 Step mode: Normal steps Repetition number: 3 Staggering: 1 17. Your selection requires a mean telemetry rate of: 4.80000 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 53.9957 minutes and will cover a solar area defined by 120 px time(s) 119.700 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 79.9897 minutes You will use for this item: 0.00000 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.459109 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 5 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 4 (centred) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 18. No compression. 7. Reference pixel 1: 511 on detector A Flat-field correction: OFF Ion(s) in band 1: VIRTUAL .... 1556.12 Angstroem Spectral window(s) (pixel): 1024 8. Image format: Format #5 (1024*120, B2); 1 time(s) 9. Spectrohelio mode: Spectrohelio 3 Integration time: 200.000 s Step size: 0.00000 arcsec or 0 units. Image number: 1 17. Your selection requires a mean telemetry rate of: 9.83040 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 3.36813 minutes and will cover a solar area defined by 120 px time(s) 0.00000 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 83.3578 minutes You will use for this item: 0.245825 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.454934 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 6 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 4 (centred) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 5. Binning (spectral) = 1 (spatial) = 1 6. Compression: 18. No compression. 7. Reference pixel 1: 700 on detector A Flat-field correction: OFF Ion(s) in band 1: C IV .... 1548.20 Angstroem C IV .... 1550.77 Angstroem Spectral window(s) (pixel): 50 8. Image format: Format #11 (50*120, B2); 2 time(s) 9. Spectrohelio mode: Spectrohelio 3 Integration time: 45.0000 s Step size: 1.14000 arcsec or 3 units. Step number: 105 Step mode: Normal steps Repetition number: 1 Staggering: 1 17. Your selection requires a mean telemetry rate of: 4.26667 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 80.4502 minutes and will cover a solar area defined by 120 px time(s) 119.700 arcsec Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 163.808 minutes You will use for this item: 0.00000 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.00000 MB out of which 0.00000 MB are for uncompressed images. Parameter List for SUMER Study: STUDY_8_1_2_67 Item # 7 ------------------------------------------------- You have selected (Irrelevant points are not listed.): 1. Interruption or flag mode: No interruption. 2. Slit 3 (up) with 1*120 arcsec^2. 3. Point to PRE-PLANNED LOCATION SOHO roll angle: 0.00000 deg 4. Solar rotation: Standard compensation. 10. RSC hold time: 448.000 ms 11. RSC step size: 1.14000 arcsec 12. RSC group number: 2 13. Number of initial RSC scans: 1 16. The total duration of the RSC scan activity will be approximately 44 s. The range of the scan will be 114 arcsec and will be covered 1 time(s) 17. Your selection requires a mean telemetry rate of: 9.14286 kbit/s Available bitrate: 10.0000 kbit/s This item will run for approximately: 0.746667 minutes Note that the memory monitoring and the run times are not very accurate. The run times just give the total exposure times with a margin of 1%, but the grating focus adjust time is included. More detailed information can be provided by the SUMER Simulator. All items up to now will run for approximately: 164.555 minutes You will use for this item: 0.0232000 MB out of which 0.00000 MB are for uncompressed images. You will have used in total: 0.0232000 MB out of which 0.00000 MB are for uncompressed images. At the end of the study you have to allow for approx. 0.530250 min to clear the memory. ***************************Warning***************************************** The detector will scan across Lyman alpha between items. ------- End of Forwarded Message