First high resolution interferometric observation of a solar prominence with ALMA

Nicolas Labrosse; Andrew S. Rodger; Krzysztof Radziszewski; Paweł Rudawy; Patrick Antolin; Lyndsay Fletcher; Peter J. Levens; Aaron W. Peat; Brigitte Schmieder; Paulo J. A. Simões

doi:10.1093/mnrasl/slac021

First high resolution interferometric observation of a solar prominence with ALMA

Nicolas Labrosse^*, Andrew S. Rodger, Krzysztof Radziszewski, Paweł Rudawy, Patrick Antolin, Lyndsay Fletcher, Peter J. Levens, Aaron W. Peat, Brigitte Schmieder, Paulo J. A. Simões

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Letter › peer-review

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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.

Original language	English
Article number	slac021
Pages (from-to)	L30-L34
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	513
Issue number	1
Early online date	7 Mar 2022
DOIs	https://doi.org/10.1093/mnrasl/slac021
Publication status	Published - 11 Jun 2022

Keywords

Sun: filaments
prominences

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10.1093/mnrasl/slac021Licence: CC BY

slac021Accepted author manuscript, 1.06 MBLicence: CC BY
Advance online versionFinal published version, 1.51 MBLicence: CC BY

https://arxiv.org/abs/2202.12434Licence: CC BY

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Labrosse, N., Rodger, A. S., Radziszewski, K., Rudawy, P., Antolin, P., Fletcher, L., Levens, P. J., Peat, A. W., Schmieder, B., & 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. Article slac021. https://doi.org/10.1093/mnrasl/slac021

@article{2b566923d1da4bdc956ae3589493254e,

title = "First high resolution interferometric observation of a solar prominence with ALMA",

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 Bia{\l}kaw 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.",

keywords = "Sun: filaments, prominences",

author = "Nicolas Labrosse and Rodger, {Andrew S.} and Krzysztof Radziszewski and Pawe{\l} Rudawy and Patrick Antolin and Lyndsay Fletcher and Levens, {Peter J.} and Peat, {Aaron W.} and Brigitte Schmieder and Sim{\~o}es, {Paulo J. A.}",

note = "Funding information: We thank the referee for their comments. 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. P.A. 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).",

year = "2022",

month = jun,

day = "11",

doi = "10.1093/mnrasl/slac021",

language = "English",

volume = "513",

pages = "L30--L34",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3925",

publisher = "Oxford University Press (OUP)",

number = "1",

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TY - JOUR

T1 - First high resolution interferometric observation of a solar prominence with ALMA

AU - Labrosse, Nicolas

AU - Rodger, Andrew S.

AU - Radziszewski, Krzysztof

AU - Rudawy, Paweł

AU - Antolin, Patrick

AU - Fletcher, Lyndsay

AU - Levens, Peter J.

AU - Peat, Aaron W.

AU - Schmieder, Brigitte

AU - Simões, Paulo J. A.

N1 - Funding information: We thank the referee for their comments. 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. P.A. 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).

PY - 2022/6/11

Y1 - 2022/6/11

N2 - 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.

AB - 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.

KW - Sun: filaments

KW - prominences

UR - http://www.scopus.com/inward/record.url?scp=85128706718&partnerID=8YFLogxK

U2 - 10.1093/mnrasl/slac021

DO - 10.1093/mnrasl/slac021

M3 - Letter

SN - 1745-3925

VL - 513

SP - L30-L34

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

M1 - slac021

ER -

First high resolution interferometric observation of a solar prominence with ALMA

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