Expanded Owens Valley Solar Array

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EOVSA (Expanded Owens Valley Solar Array) is a solar-dedicated radio interferometer operated by the New Jersey Institute of Technology and serving as a National Science Foundation Geospace Facility. NSF.jpg

Operation of EOVSA is supported by the National Science Foundation under Grant No. AGS-2130832. Any opinions, findings, and conclusions or  recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science  Foundation. 

This wiki serves as the site for EOVSA documentation.

EOVSA Documentation

Using EOVSA Data

System Software

Observing Log

2016 November; December

2017 January; February; March; April; May; June; July; August; September; October; November; December

2018 January; February; March; April; May; June; July; August; September; October; November; December

2019 January; February; March; April; May; June; July; August; September; October; November; December

2020 January; February; March; April; May; June; July; August; September; October; November; December

2021 January; February; March; April; May; June; July; August; September; October; November; December

2022 SQL Outage


Trouble Shooting Guide

Tohban Records

Owen's Notes

Caius' Notes

Tohban EOVSA Imaging Tutorial A-Z

Tohban Guide to Self Calibration and Imaging for EOVSA

Guide to Upgrade SolarSoft(SSW)

EOVSA Flare List

See this link for a list of EOVSA flares as a Google Spreadsheet.

Recent Flare List (2021-)

An older link is available at the EOVSA website.

EOVSA Publications

Here is a (partial) list of publications that utilize EOVSA data. See also the collection of EOVSA publications at this NASA/ADS Library.

Mondal, S., Chen, B. & Yu, S. (2023) ApJ, submitted Multifrequency microwave imaging of weak transients from the quiet solar corona
Lörinčík et al (2022) Frontiers, 9, 1 Rapid variations of Si IV spectra in a flare observed by interface region imaging spectrograph at a sub-second cadence
Kou et al. (2022) Nature Communications 13, 7680 Microwave imaging of quasi-periodic pulsations at flare current sheet
Fleishman et al. (2022) Nature 606, 674 Solar flare accelerates nearly all electrons in a large coronal volume
Li, X., et al., (2022) ApJ, 932, 92 Modeling Electron Acceleration and Transport in the Early Impulsive Phase of the 2017 September 10th Solar Flare
Liu, N., et al., (2022), ApJ, 930, 154 Multi-instrument Comparative Study of Temperature, Number Density, and Emission Measure during the Precursor Phase of a Solar Flare
Zhang et al. (2022), ApJ, 932, 53 Implications for additional plasma heating driving the extreme-ultraviolet late phase of a solar flare with microwave imaging spectroscopy
Lopez et al. (2021), A&A, 657, A51 A solar flare driven by thermal conduction observed in mid-infrared
Wei et al. (2021), ApJ, 923, 213 Coronal Magnetic Field Measurements along a Partially Erupting Filament in a Solar Flare
Shaik & Gary (2021), ApJ, 919, 44 Implications of Flat Optically Thick Microwave Spectra in Solar Flares for Source Size and Morphology
Kocharov et al. (2021), ApJ, 915, 12 Multiple Sources of Solar High-energy Protons
Chen et al. (2021), ApJL, 908, L55 Energetic Electron Distribution of the Coronal Acceleration Region: First results from Joint Microwave and Hard X-ray Imaging Spectroscopy
Chhabra et al. (2021), ApJ, 906, 132 Imaging Spectroscopy of CME-Associated Solar Radio Bursts
Reeves et al. (2020), ApJ, 905, 165 Hot Plasma Flows and Oscillations in the Loop-top Region During the September 10 2017 X8.2 Solar Flare
Yu et al. (2020), ApJ, 900, 17 Magnetic Reconnection During the Post Impulsive Phase of the X8.2 Solar Flare: Bi-Directional Outflows as a Cause of Microwave and X-ray Bursts
Chen et al. (2020b), Nature Astronomy, 4, 1140 Measurement of magnetic field and relativistic electrons along a solar flare current sheet
Chen et al. (2020a), ApJL, 895, 50 Microwave Spectral Imaging of an Erupting Magnetic Flux Rope: Implications for the Standard Solar Flare Model in Three Dimensions
Kuroda et al. (2020), Frontiers, 7, 22 Evolution of Flare-accelerated Electrons Quantified by Spatially Resolved Analysis
Glesener et al. (2020), ApJL, 891, 34 Accelerated Electrons Observed Down to <7 keV in a NuSTAR Solar Microflare
Karlicky at al. (2020), ApJ, 889, 72 Drifting Pulsation Structure at the Very Beginning of the 2017 September 10 Limb Flare
Fleishman et al. (2020), Science, 367, 278 Decay of the coronal magnetic field can release sufficient energy to power a solar flare
Gary et al. (2020), BAAS 52, 385.01 Direct link to AAS iPoster A new view of the solar atmosphere: daily full-disk multifrequency radio images from EOVSA
Polito et al. (2018), ApJ, 864, 63 Broad Non-Gaussian Fe XXIV Line Profiles in the Impulsive Phase of the 2017 September 10 X8.3-class Flare Observed by Hinode/EIS
Gary et al. (2018), ApJ, 863, 83 Microwave and Hard X-Ray Observations of the 2017 September 10 Solar Limb Flare
Kuroda et al. (2018), ApJ, 852, 32 Three-dimensional Forward-fit Modeling of the Hard X-ray and the Microwave Emissions of the 2015 June 22 M6.5 flare
Wang et al. (2017), Nature Astronomy, 1, 85 High-resolution observations of flare precursors in the low solar atmosphere
Nita et al. (2016), J. Astron. Instr., 5, 1641009-7366 EOVSA Implementation of a Spectral Kurtosis Correlator for Transient Detection and Classification

VLA Flare List and Publications

See this link for a list of flare observations made by the Karl G. Jansky Very Large Array (VLA). Below is a partial list of publications that utilize VLA solar data (see also this NASA/ADS Library).