User Guide
The Plots-Movies page display four surveys :
the principal Composite I
his two ancillaries Composites IIa and IIb
the 24 Waves/Swaves page
Movies from the Nancay Radioheliograph are availables with the surveys.
Each survey combines :
data from various spectrographs
display of brightness distribution projected onto the heliocentric East/West or North/South direction versus time form the Nancay Radioheligraph
positions of CMEs
They are organised with a "daily page" which displays survey from 08h to 16h (for the Composites pages) or from 00h to 24h (for the 24h Waves/Swaves page) and several "zoom pages" for every hour (except for 24h Waves/Swaves page which displays 3h long zooms).
From each survey page, you can access directly to the other surveys of the same date, NRH movies and the LASCO and STEREO CMEs pages.
You can check out the avalability of each survey in the below table :
For a detailed explanation of each survey and the NRH Movies:
Composite I (large spectral frequency range)
Composites II ( Decimetric frequency range)
STEREO/SWAVES and WIND/WAVES
NRH Movies
1- COMPOSITE I
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The COMPOSITE SURVEY I covers the 08-16 UT time range (1pixel/60sec) and zooms are 1 hour long (1pixel/10sec).
It is composed of
a spectrum (A)
a display of brightness distribution projected onto the heliocentric East/West or North/South direction versus time at 150/164MHz (B)
a position of CMEs detected by SOHO (C)
Multi-instrument Spectrum (A)
Frequency range 600 MHz-20 kHz. Logarithmic scale.
Combines data obtained with :
| Instrument | Fmin | Fmax | Time resolution |
|---|
| Waves RAD1 | 20 KHz | 1 MHz | 1 min |
| Waves RAD2 | 1.04 MHz | 13.8 MHz | 16 sec |
| DAM | 20 MHz | 70 MHz | 1 sec |
| Artemis | 70 MHz | 600 MHz | 5 sec |
Note : When DAM is unavailable, Artemis is used also for the frequency range from 20 MHz to 70 MHz.
EW and NS brightness distribution versus time (B)
150 MHz (164 MHz before 01 Dec 2006)
Integration time 10s (1 point/ 60s)
Each frame contains a display of brightness distribution projected onto the heliocentric East/West or North/South direction versus time ; the units of the vertical axis are solar radius.
Coronal Mass Ejections (CMEs) (C)
The CMEs are reported in the composite1 survey from 08 to 16 UT.
Time of appearance in SOHO/LASCO C2 and direction (arrow)
Speed V(First order, km/sec), angular width W(deg)
Black: detected in C2 and C3
Grey: detected in C2 only
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2- COMPOSITE IIa and COMPOSITE IIb
IIa
IIb
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The COMPOSITES SURVEYS IIa and IIb covers the 08-16 UT time range (1pixel/60sec) and zooms are 1 hour long (1pixel/10sec).
These two surveys are similars except for the EW and NS brightness distributions versus time (C and D) which is :
greyscale (same as COMPOSITE I) for the COMPOSITE IIa
contour plot for the COMPOSITE IIb
The two spectra (A and B) reported in these two surveys are similars .
They are composed of
two spectra (A and B)
two displays of brightness distribution projected onto the heliocentric East/West or North/South direction versus time at 150/164MHz (C) and 432MHz (D)
a position of CMEs detected by SOHO (E)
Two Spectra
1) from 10 (or 20) MHz to 70 MHz. Linear scale.(A)
This spectrum displays data from DAM. When DAM is unavailable, Artemis is used instead.
| Instrument | Fmin | Fmax | Time resolution | Dates |
|---|
| DAM | 20 MHz | 70 MHz | 1 sec | From 1997 to present |
| Artemis | 20 MHz | 70 MHz | 5 sec | From 1997 to present |
2) from 100 MHz to 2000 or 600 MHz. Linear scale.(B)
This spectrum displays data from Phoenix 2 because of his frequency range (which goes to 2Ghz).
When Phoenix 2 is unavailable, Artemis is used instead up to 600Mhz.
Please note that Phoenix 2 is no longer operationnal from 16 march 2009. So after this date, Artemis is systematicaly used.
| Instrument | Fmin | Fmax | Time resolution | Dates |
|---|
| Artemis | 100 MHz | 600 MHz | 5 sec | From 1997 to present |
| Phoenix 2 | 112 MHz | 2000 MHz | 1 sec | From 1997 to 16 march 2009 |
EW and NS brightness distributions versus time at two frequencies
150 MHz (164 MHz before 01 Dec 2006) (C)
432 MHz (D)
Each frame contains a display of brightness distribution projected onto the heliocentric East/West or North/South direction versus time ; the units of the vertical axis are solar radius.
IIa displays in greyscale : each scan is normalised to its maximum. All the bursts are visibles but the intensity variations during the day are not well described.
IIb displays in contour plot : the normalisation is made on the maximum intensity in the whole day. Contour levels are chosen in order to describe the quiet sun (at least one level) and intenses bursts. This gives a good estimate of intensity variation with the day.
| Survey | | Integration time |
|---|
| IIa |
8h-16h | 120s |
| IIa | zoom | 10s |
| IIb | 8h-16h | 60s | | IIb |
zoom | 10s |
Coronal Mass Ejections (CMEs) (E)(same as Composite I survey)
The CMEs are reported in the composites IIa and IIb survey from 08 to 16 UT.
Time of appearance in SOHO/LASCO C2 and direction (arrow)
Speed V(First order, km/sec), angular width W(deg)
Black: detected in C2 and C3
Grey: detected in C2 only
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3- STEREO/SWAVES and WIND/WAVES
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The STEREO/SWAVES and WIND/WAVES 24h SURVEY covers the 00-24 UT time range (1pixel/180sec) and zooms are 3 hours long (1pixel/22.5sec).
It is composed of :
three spectra from spatials data (A,B and C)
a position of CMEs detected by STEREO A and B layered over the spectra (Red and blue triangles)
a position of CMEs detected by SOHO in a 24 hours time range (D)
It is available from the STEREO launch on october 2006.
3 spectra
Logarithmic frequency axis.
1) STEREO WAVES A (A)
2) STEREO WAVES B (B)
The spectra from SWAVES A and SWAVES B are placed head to tail.
| Instrument | Fmin | Fmax | Time resolution |
|---|
| SWAVES LFR | 0.04 MHz | 0.160 MHz | between 15s and 30s |
| SWAVES HFR | 0.125 MHz | 16.025 MHz | between 15s and 30s |
3) WIND/WAVES (C)
| Instrument | Fmin | Fmax | Time resolution |
|---|
| Waves RAD1 | 20 KHz | 1 MHz | 1 min |
| Waves RAD2 | 1.04 MHz | 13.8 MHz | 16 sec |
Coronal Mass Ejections (CMEs) form LASCO (same as Composite I survey but in a 24h time range) and STEREO
LASCO CMEs (D)
Time of appearance in SOHO/LASCO C2 and direction (arrow)
Speed V(First order, km/sec), angular width W(deg)
Black: detected in C2 and C3
Grey: detected in C2 only
STEREO CMEs (Red and blue triangles)
Time of appearance in STEREO A (red triangle) and STEREO B (blue triangle)
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MOVIES FROM NRH
The MOVIES page is accessible via every survey page.
Movies are availables with 120sec and 10sec time resolution at two frequencies :
164MHz (150 MHz after 01 Dec 2006)
432 MHz
They are composed by successives png images.
Each image can be saved individually (pause the movie, then drag and drop the image or save it using floating menu).
In order to view a movie, select
a starting time (hh:min)
a frame rate (time resolution 10 or 120 sec),
the frequency,
the number of images
and press LOAD MOVIE.
The loading of the movie may take some time.
