Labrosse, N. , Rodger, A. S., Radziszewski, K., Rudawy, P., Antolin, P., Fletcher, L. , Levens, P. J., Peat, A. W., Schmieder, B. and Simões, P. J. A. (2022) First high resolution interferometric observation of a solar prominence with ALMA. Monthly Notices of the Royal Astronomical Society: Letters, 513(1), L30-L34. (doi: 10.1093/mnrasl/slac021)
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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 Hα from Białkaw Observatory and with SDO/AIA reveal similar prominence morphology to the ALMA observation. The contribution functions of 3 mm and Hα emission are shown to have significant overlap across a range of gas pressures. We estimate the maximum millimetre-continuum optical thickness to be τ3mm ≈ 2, and the brightness temperature from the observed Hα intensity. The brightness temperature measured by ALMA is ∼6000 – 7000 K in the prominence spine, which correlates well with the estimated brightness temperature for a kinetic temperature of 8000 K.
| Item Type: | Articles |
|---|---|
| Additional Information: | Support from STFC grants ST/T000422/1 (NL, LF), ST/N504075/1 (ASR), ST/K502005/1 (PJL), and ST/S505390/1 (AWP) is gratefully acknowledged. PA acknowledges STFC support from Ernest Rutherford Fellowship grant number ST/R004285/2. PJAS acknowledges support from CNPq (contract 307612/2019-8) and FAPESP (2013/24155-3). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Schmieder, Prof Brigitte and Simoes, Dr Paulo and Fletcher, Professor Lyndsay and RODGER, ANDREW and Peat, Dr Aaron and Labrosse, Dr Nicolas and Levens, Peter |
| Authors: | Labrosse, N., Rodger, A. S., Radziszewski, K., Rudawy, P., Antolin, P., Fletcher, L., Levens, P. J., Peat, A. W., Schmieder, B., and Simões, P. J. A. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Monthly Notices of the Royal Astronomical Society: Letters |
| Publisher: | Oxford University Press |
| ISSN: | 1745-3925 |
| ISSN (Online): | 1745-3933 |
| Published Online: | 07 March 2022 |
| Copyright Holders: | Copyright © 2022 The Authors |
| First Published: | First published in Monthly Notices of the Royal Astronomical Society: Letters 513(1): L30-L34 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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