Solar Submillimeter-wave Telescope
Qualitative Monitoring of Submillimeter-wave Activity
( Updated May 7, 2011 )
current one-hour period
one day earlier
two days earlier
three days earlier
four days earlier
Description of SST 212 GHz and 405 GHz real time monitoring
SST Calibrated Data (click here)
A temporary list of dates is readily available. Other desired dates from 2003 to present can be requested to Pablo Pereyra (firstname.lastname@example.org).
The first visualization panels exhibit all
six channels in three options:
Panels also show:
ZOOM mode allows clicking at two successive times to obtain the corresponding time-expanded plot.
"Multiple Beams" mode calculate the corrected Antenna Temperature at position deduced from the comparison of beams 2, 3 and 4 (see description at the main webpage), at 212 GHz and at 405 GHz (assuming the source position is the same at the two frequencies). Attention: When selected time structures do not correspond to bursts, the calculated Antenna Temperature may produce inconsistent results.
Antenna temperatures are corrected for atmospheric transmission, multiplying by exp [τ/sin H] where τ is the measured optical depth and H the Sun elevation angle at the time closest to the time of analysis.
Burst excess temperatures, ΔT, above the level previous to the event, are converted into solar flux units: S = 0.62 ΔT (at 405 GHz) and S = 0.35 ΔT (at 212 GHz), for which it has been adopted the latests measured aperture efficiencies (0.20 at 405 GHz and 0.35 at 212 GHz).
For method descriptions see:
Georges, C. B. et al., Proc. of SBMO-International Microwave Symposium/Brazil IEEE-MTT Cat. N89th0260-0, p. 447, 1989;
Giménez de Castro, C. G. et al., Astron. Astrophys., 140, 343, 1999.
For SST descriptions see:
Kaufmann, P. et al., Proc. of SPIE, 7012, 7012L-1-8, doi:10.1117/12.788889, 2008
Further details and higher resolution data (5 ms) can be available under request.
Contacts: Pablo Pereyra (email@example.com), Adriana Silva Válio (firstname.lastname@example.org) and Carlos Guillermo Giménez de Castro (email@example.com).