First high resolution interferometric observation of a solar prominence with ALMA-Reference-Cited by-同舟云学术

First high resolution interferometric observation of a solar prominence with ALMA

Published:2022-03-07 Issue:1 Volume:513 Page:L30-L34
ISSN:1745-3925
Container-title:Monthly Notices of the Royal Astronomical Society: Letters
language:en
Short-container-title:

Author:

Labrosse Nicolas¹^ORCID,Rodger Andrew S¹,Radziszewski Krzysztof²,Rudawy Paweł²,Antolin Patrick³^ORCID,Fletcher Lyndsay¹⁴^ORCID,Levens Peter J¹,Peat Aaron W¹^ORCID,Schmieder Brigitte¹⁵⁶,Simões Paulo J A¹⁷^ORCID

Affiliation:

1. SUPA, School of Physics & Astronomy, University of Glasgow, Glasgow G12 8QQ, UK

2. Astronomical Institute, University of Wrocław, PL 51-622, Poland

3. Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle Upon Tyne, NE1 8ST, UK

4. Rosseland Centre for Solar Physics, University of Oslo, P.O.Box 1029 Blindern, 0315 Oslo, NO, Norway

5. Centre for mathematical Plasma-Astrophysics, KU Leuven, Leuven, BE, 3001, Belgium

6. LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, F-92195 Meudon, France

7. Centro de Rádio Astronomia e Astrofísica Mackenzie, Escola de Engenharia, Universidade Presbiteriana Mackenzie, São Paulo, BR, 01302-907, Brazil

Abstract

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.

Funder

STFC

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/mnrasl/advance-article-pdf/doi/10.1093/mnrasl/slac021/42753289/slac021.pdf

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