| Full text | |
| Author(s): |
Labrosse, Nicolas
;
Rodger, Andrew S.
;
Radziszewski, Krzysztof
;
Rudawy, Pawel
;
Antolin, Patrick
;
Fletcher, Lyndsay
;
Levens, Peter J.
;
Peat, Aaron W.
;
Schmieder, Brigitte
;
Simoes, Paulo J. A.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 513, n. 1, p. 5-pg., 2022-06-01. |
| Abstract | |
We present the first observation of a solar prominence at 84 - 116 GHz using the high resolution interferometric imaging of ALMA. Simultaneous observations in Hafrom Bialkaw Observatory and with SDO/AIA reveal similar prominence morphology to the ALMA observation. The contribution functions of 3 mm and Haemission are shown to have significant overlap across a range of gas pressures. We estimate the maximum millimetre-continuum optical thickness to be tau(3mm) approximate to 2, and the brightness temperature from the observed H alpha intensity. The brightness temperature measured by ALMA is similar to 6000 - 7000 K in the prominence spine, which correlates well with the estimated brightness temperature for a kinetic temperature of 8000 K. (AU) | |
| FAPESP's process: | 13/24155-3 - Solar flare diagnostic in an unprecedented frequency range from microwaves to THz frequencies: challenges for interpretation (flat) |
| Grantee: | Carlos Guillermo Giménez de Castro |
| Support Opportunities: | Research Projects - Thematic Grants |