Expanded Owens Valley Solar Array: Difference between revisions

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== Using EOVSA Data  ==
== Using EOVSA Data  ==
* <big>[[EOVSA Data products]]</big>: An introduction to standard EOVSA spectrogram and spectral image products with example scripts for reading and plotting.
* <big>[[EOVSA Data Products]]</big>: An introduction to standard EOVSA spectrogram and spectral image products with example scripts for reading and plotting.
* <big>[[EOVSA Data Policy]]</big>: Policy for using EOVSA data products.
* <big>[[EOVSA Data Policy]]</big>: Policy for using EOVSA data products.
* <big>Analysis Software</big>: These are for in-depth use of EOVSA data (from calibrated visibilities) and tools for quantitative analysis.   
* <big>Analysis Software</big>: These are for in-depth use of EOVSA data (from calibrated visibilities) and tools for quantitative analysis.   
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** [[Spectrogram Software]]
** [[Spectrogram Software]]
** [[Mapping Software]]
** [[Mapping Software]]
* <big>Data Analysis Guides</big>
* <big>Data Analysis Guides (for those who start from raw data) </big>
** <big>[[EOVSA Data Analysis Tutorial 2022]]</big> and <big>[https://colab.research.google.com/drive/19NQb6Emb9HvKX4QHq9ZYCP3RM6nT7sDL#scrollTo=cLdDVptBGG-X EOVSA Workspace]</big> at [https://sphere.boulder.swri.edu/ SPHERE 2022 Workshop]
<!--** <big>[[EOVSA Data Analysis Tutorial 2022]]</big> and <big>[https://colab.research.google.com/drive/19NQb6Emb9HvKX4QHq9ZYCP3RM6nT7sDL#scrollTo=cLdDVptBGG-X EOVSA Workspace]</big> at [https://sphere.boulder.swri.edu/ SPHERE 2022 Workshop]-->
** <big>[https://colab.research.google.com/drive/1lSLLxgOG6b8kgu9Sk6kSKvrViyubnXG6?usp=sharing#scrollTo=xbXyyLmCFCGL EOVSA Data Analysis Tutorial at RHESSI 19 Workshop]</big>
<!--** <big>[https://colab.research.google.com/drive/1lSLLxgOG6b8kgu9Sk6kSKvrViyubnXG6?usp=sharing#scrollTo=xbXyyLmCFCGL EOVSA Data Analysis Tutorial at RHESSI 19 Workshop]</big>-->
** <big>[[EOVSA Data Analysis Tutorial]]</big> at [http://rhessi18.umn.edu/ RHESSI XVIII Workshop]
<!--** <big>[[EOVSA Data Analysis Tutorial]]</big> at [http://rhessi18.umn.edu/ RHESSI XVIII Workshop]-->
** [[Self-Calibrating Flare Data]] Example script and guides for self-calibrating EOVSA flare data (to be completed)
<!-- ** [[Self-Calibrating Flare Data]] Example script and guides for self-calibrating EOVSA flare data (to be completed)-->
<!-- ** [[Imaging]] -->
<!-- ** [[Imaging]] -->
<!-- ** [[Flare Imaging]] -->
<!-- ** [[Flare Imaging]] -->
**[[IDB flare pipeline]] Tutorial to run the flare pipeline for quicklook images
**[[Tohban Guide to Self Calibration and Imaging for EOVSA]] Step-to-step guide for manually making images from raw visibility data.
**[[EOVSA flare pipeline]] Description of the EOVSA flare pipeline and tutorial for running it to produce quicklook images.
<!-- ** [[Imaging]] -->
<!-- ** [[Imaging]] -->
<!-- ** [[Flare Imaging]] -->
<!-- ** [[Flare Imaging]] -->
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== System Software ==
== EOVSA System Software ==


* LabVIEW software
* LabVIEW software
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[[2024 January]]; [[2024 February | February]]; [[2024 March | March]];[[2024 April | April]];[[2024 May |May]]; [[2024 June | June]]; [[2024 July | July]];  [[2024 August | August]];
[[2024 January]]; [[2024 February | February]]; [[2024 March | March]];[[2024 April | April]];[[2024 May |May]]; [[2024 June | June]]; [[2024 July | July]];  [[2024 August | August]];
[[2024 September | September]]
[[2024 September | September]]; [[2024 October | October]]; [[2024 November | November]]; [[2024 December | December]]


== SoD Observing Logs ==
== EOVSA Scientist on Duty ==
* See [https://docs.google.com/document/d/1_iGnMRRrvb85Z0vT8-LzgQmCOKDSATEuQ0vTsn2C-dc/edit?usp=sharing SoD Routines] for detailed instructions for Scientist-on-Duty routines.
* Scientist on Duty (SoD): EOVSA team members take turns and serve as an SoD to work with our onsite observatory staff on day-to-day observing. They are also responsible for monitoring solar activities and ensuring that the data we collect are of high quality.  
* 2024 [https://docs.google.com/document/d/1QDWw5y4HpcE7CSpzXwftMqQT4FDgNJj-6fRrgWrqdug/edit?usp=sharing May (and before that)], [https://docs.google.com/document/d/1Rh2gYBV2E454xVYEv8jx5IXKd1N2Z05ns4dhI2XCE08/edit?usp=sharing June], [https://docs.google.com/document/d/1beUpp6rgwjqSxKbuHzXIR9hhPrGyi0j-SjtEIeav9Vg/edit?usp=sharing July], [https://docs.google.com/document/d/1pSzUXW5gd-4cZAR-gglTUVM_J2UHMa4wYJ2AzD4cdEo/edit?usp=sharing August], [https://docs.google.com/document/d/18pArAP0kRDhXHbty_y3TtrygmWkC2oLn-UD7njIpRIo/edit?usp=sharing September], October, November, December
* SoD observing logs:
** 2024: [https://docs.google.com/document/d/1QDWw5y4HpcE7CSpzXwftMqQT4FDgNJj-6fRrgWrqdug/edit?usp=sharing May (and before that)], [https://docs.google.com/document/d/1Rh2gYBV2E454xVYEv8jx5IXKd1N2Z05ns4dhI2XCE08/edit?usp=sharing June], [https://docs.google.com/document/d/1beUpp6rgwjqSxKbuHzXIR9hhPrGyi0j-SjtEIeav9Vg/edit?usp=sharing July], [https://docs.google.com/document/d/1pSzUXW5gd-4cZAR-gglTUVM_J2UHMa4wYJ2AzD4cdEo/edit?usp=sharing August], [https://docs.google.com/document/d/18pArAP0kRDhXHbty_y3TtrygmWkC2oLn-UD7njIpRIo/edit?usp=sharing September], [https://docs.google.com/document/d/1Qt6vhrqPAOG7W5Y_tLiod_QgNR1FDyzRxQcg6_oJQd4/edit?usp=sharing October], [https://docs.google.com/document/d/1pv9-Wne80FCrg0J5BkjOafmof_s3jlnc9HwyzWkIBfU/edit?usp=sharing November], [https://docs.google.com/document/d/1O5svOVwQZbUON1GMR_8nBR5LAL0M8RM2_zWW4oeBiLk/edit?usp=sharing December]
* SoD instructions:
** Daily routines: see [https://docs.google.com/document/d/1_iGnMRRrvb85Z0vT8-LzgQmCOKDSATEuQ0vTsn2C-dc/edit?usp=sharing SoD Routines] for detailed instructions.
** Instructions for [[making quick-look flare spectrograms and movies]]
 
==OVRO-LWA Solar-Dedicated Spectroscopic Imager==
The OVRO-LWA (Owens Valley Radio Observatory Long Wavelength Array) has recently been upgraded to include a solar-dedicated beam and two solar imaging modes (slow visibilities of 352 antennas with a 10-s cadence, and fast visibilities of 48 antennas with a 0.1-s cadence).  The large collecting area and excellent calibration provide unprecedented high-sensitivity imaging of the quiet Sun and bursts.  The array is currently in commissioning and observations are not yet continuous, but they are becoming more so.  See the daily realtime data at http://ovsa.njit.edu/status.php for '''real-time display of the spectrogram and a selection of images''', both updated on a 1-min cadence.
 
===Solar-Dedicated Modes===
* Beamformer: the beamformer uses the 256 core antennas to form a synthesized beam of more than 1 degree in size that tracks the Sun from sunrise to sunset.  This permits a continuous record of the full-Stokes total flux (without spatial resolution) of the Sun (a dynamic spectrum) with 24 kHz frequency resolution (3072 frequencies from 15-90 MHz) and as low as 1 ms time resolution.
 
* Slow Visibility Imaging: in this mode, the entire 352-element array is interferometrically correlated to provide visibilities for imaging at all 3072 frequencies at 10-s time resolution.  This is ideal for imaging quiet Sun and slowly-varying emission such as coronal mass ejections and active region variability.
 
* Fast Visibility Imaging: in this mode, a subset of 48 antennas (chosen to include mainly outer antennas to maintain good spatial resolution) is interferometrically correlated to provide visibilities for imaging at 768 frequencies (96 kHz frequency resolution) at 0.1-s time resolution.  This is ideal for imaging rapidly varying emission such as type II and type III bursts as well as many other solar spectral fine structures.
 
===Inital Data Access===
In its current commissioning state, we try to run the beamformer and imaging pipeline every day in real-time since November 2023 (no latency for beamforming spectrograms and 5-10 min latency for images). Quicklook real-time spectrograms/images can be accessed from http://ovsa.njit.edu/status.php. To access data from previous days, use the following links (replace yyyymmdd with the date you desire):
* Quicklook beamformer total-power spectrograms: http://ovsa.njit.edu/lwa-data/1min_spectra/yyyymmdd/. Check this link for additional daily plots [[Daily OVRO-LWA Beamformer Data]].
* Quicklook multi-frequency movies at 1-min cadence: http://ovsa.njit.edu/lwa-data/1min_images/yyyymmdd/movie_yyyy-mm-dd.html
 
Note our pipeline processing development is still in the early phase. For example, absolute flux calibrations have not been done for the beamformer spectrograms. Also, artificial effects (including ionospheric refraction effects) are present in the images that cause distortions/shifts. We caution interested users only to consider them for quick-look purposes at this point. Please contact the EOVSA PIs (Dale Gary, Bin Chen) if you intend to use them for science.
 
===OVRO-LWA Operation Notes===
 
[[OVRO-LWA Operation Notes]]


== Tohbans ==
== Tohbans ==
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==Radio Data from Around The Heliosphere==
==Radio Data from Around The Heliosphere==
* [http://ovsa.njit.edu//wiki/index.php/Radio_Data_from_Around_the_World#Radio_Data_Access '' Radio Data '']
* [http://ovsa.njit.edu//wiki/index.php/Radio_Data_from_Around_the_World#Radio_Data_Access '' Radio Data '']
=OVRO-LWA Solar-Dedicated Spectroscopic Imager=
The OVRO-LWA (Owens Valley Radio Observatory Long Wavelength Array) has recently been upgraded to include a solar-dedicated beam and two solar imaging modes (slow visibilities of 352 antennas with a 10-s cadence, and fast visibilities of 48 antennas with a 0.1-s cadence).  The large collecting area and excellent calibration provide unprecedented high-sensitivity imaging of the quiet Sun and bursts.  The array is currently in commissioning and observations are not yet continuous, but they are becoming more so.  See the daily realtime data at http://ovsa.njit.edu/status.php for '''real-time display of the spectrogram and a selection of images''', both updated on a 1-min cadence.
==Solar-Dedicated Modes==
===Beamformer===
The beamformer uses the 256 core antennas to form a synthesized beam of more than 1 degree in size that tracks the Sun from sunrise to sunset.  This permits a continuous record of the full-Stokes total flux (without spatial resolution) of the Sun (a dynamic spectrum) with 24 kHz frequency resolution (3072 frequencies from 15-90 MHz) and as low as 1 ms time resolution.
===Slow Visibility Imaging===
In this mode, the entire 352-element array is interferometrically correlated to provide visibilities for imaging at all 3072 frequencies at 10-s time resolution.  This is ideal for imaging quiet Sun and slowly-varying emission such as coronal mass ejections and active region variability.
===Fast Visibility Imaging===
In this mode, a subset of 48 antennas (chosen to include mainly outer antennas to maintain good spatial resolution) is interferometrically correlated to provide visibilities for imaging at 768 frequencies (96 kHz frequency resolution) at 0.1-s time resolution.  This is ideal for imaging rapidly varying emission such as type II and type III bursts as well as many other solar spectral fine structures.
==Inital Data Access==
In its current commissioning state, we try to run the beamformer and imaging pipeline every day in real-time since November 2023 (no latency for beamforming spectrograms and 5-10 min latency for images). Quicklook real-time spectrograms/images can be accessed from http://ovsa.njit.edu/status.php. To access data from previous days, use the following links (replace yyyymmdd with the date you desire):
* Quicklook beamformer total-power spectrograms: http://ovsa.njit.edu/lwa-data/1min_spectra/yyyymmdd/. Check this link for additional daily plots [[Daily OVRO-LWA Beamformer Data]].
* Quicklook multi-frequency movies at 1-min cadence: http://ovsa.njit.edu/lwa-data/1min_images/yyyymmdd/movie_yyyy-mm-dd.html
Note our pipeline processing development is still in the early phase. For example, absolute flux calibrations have not been done for the beamformer spectrograms. Also, artificial effects (including ionospheric refraction effects) are present in the images that cause distortions/shifts. We caution interested users only to consider them for quick-look purposes at this point. Please contact the EOVSA PIs (Dale Gary, Bin Chen) if you intend to use them for science.
==Operation Notes==
===Starting solar beamforming observations===
* Log into lwacalim10 (this is the only node that allows submissions)
* Activate the deployment conda environment
<pre> conda activate deployment </pre>
* Check what schedules are there
<pre>
lwaobserving show-schedule
</pre>
* Submit the schedule for the next 7 days (note that sdf files are written to /tmp/solar_<date>_<time>.sdf and will be owned by you).
<pre>
ipython
cd /home/dgary
import make_solar_sdf
make_solar_sdf.multiday_obs(ndays=7)
</pre>
* Calibrate the beam (if needed, using the same Python session)
<pre>
from mnc import control
con=control.Controller('/opt/devel/dgary/lwa_config_calim_std.yaml')
con.configure_xengine(['dr2'], calibratebeams=True)
</pre>
If the beam is already calibrated, the con.configure_xengine command will say that and return immediately.  If for any reason you want to override the current calibration, instead type
<pre>
con.configure_xengine(['dr2'], calibratebeams=True, force=True)
</pre>
===Starting slow and fast visibility recorders ===
* Log into lwacalim10
* Check the recorder status by going to http://localhost:5006/LWA_dashboard
* Activate the environment and configure
<pre>
conda activate deployment
ipython
cd /home/pipeline/proj/lwa-shell/mnc_python/
from mnc import control
con=control.Controller('/opt/devel/dgary/lwa_config_calim_std.yaml')
</pre>
* Start the recorders
<pre>
con.start_dr(['drvs', 'drfv'])
</pre>
* Check the recorder status in command line
<pre>
con.status_dr()
</pre>
===Restart slow and fast visibility recorder services (experts only!)===
Occasionally, one would see slow and/or fast images on certain bands showing "No Data" all the time. This is the time to suspect that the recorder services need to be restarted. To check this, do the following:
* Log into lwacalim10 and check the recorder status by going to http://localhost:5006/LWA_dashboard. Recorders in question may show up as "Shutdown."
* Check if the data are being written to disk. One can run the following script for a given day (format yyyy-mm-dd)
<pre>
source /opt/devel/dgary/check_recording.sh 2024-09-27
</pre>
If all data are being recorded, it would list all the hours of the day that have data. Otherwise, something like the following would be shown
<pre>
ls: cannot access '/lustre/pipeline/slow/32MHz/2024-09-27/': No such file or directory
ls: cannot access '/lustre/pipeline/slow/69MHz/2024-09-27/': No such file or directory
ls: cannot access '/lustre/pipeline/fast/32MHz/2024-09-27/': No such file or directory
ls: cannot access '/lustre/pipeline/fast/69MHz/2024-09-27/': No such file or directory
</pre>
To determine which server node that hosts the recorders, use the following mapping:
<pre>
13 MHz, 50 MHz → lwacalim01
18 MHz, 55 MHz → lwacalim02
23 MHz, 59 MHz → lwacalim03
27 MHz, 64 MHz → lwacalim04
32 MHz, 69 MHz → lwacalim05
36 MHz, 73 MHz → lwacalim06
41 MHz, 78 MHz → lwacalim07
46 MHz, 82 MHz → lwacalim08
</pre>
In the example above, the problem lies in the slow and fast recorders on node lwacalim05. To fix them, do the following
* Log in to the respective node (lwacalim05 in this example) as the "pipeline" user (only a few of us have the privilege)
* Restart the slow and fast services. Each node hosts two slow recorders and two fast recorders. The slow recorders are named dr-vslow-[m1] and dr-vslow-[m2], where m1=2n-1 and m2=2n, with n the node number (5 in this example). Similarly, the fast recorders are named dr-vfast-[m].
<pre>
systemctl --user restart dr-vslow-9
systemctl --user restart dr-vslow-10
systemctl --user restart dr-vfast-9
systemctl --user restart dr-vfast-10
</pre>
Once this is done, check http://localhost:5006/LWA_dashboard again. The recorders in question should show as "normal, idle." The last step is to start the recorders following the steps in the previous section, e.g.,
<pre>
con.start_dr(['drvs', 'drvf'])
</pre>
Don't worry if you see messages such as "'Failed to schedule recording start: Operation starts during a previously scheduled operation'" for recorders that are already working. Pay attention to those weren't working, and they should display something like "'drvs8002': {'sequence_id': '7428a3d67cee11ef80113cecef5ef4c6', 'timestamp': 1727454906.4683754, 'status': 'success', 'response': {'filename': '/lustre/pipeline/slow/'}}".
Lastly, check if the recorders are back and the data are flowing.
<pre>
con.status_dr(['drvs', 'drvf'])
</pre>

Latest revision as of 17:48, 2 December 2024

Eovsa1.png

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.

OVRO-LWA1.png

OVRO-LWA (Owens Valley Radio Observatory Long Wavelength Array) is an all-sky imager that has a new solar-dedicated spectroscopic imaging mode. OVRO-LWA is a multi-institutional collaboration led by Caltech. NJIT Solar Radio Group is leading its solar-mode development and science. At the bottom of this page are new links for that facility.

EOVSA Flare List

Using EOVSA Data

  • EOVSA Data Products: An introduction to standard EOVSA spectrogram and spectral image products with example scripts for reading and plotting.
  • EOVSA Data Policy: Policy for using EOVSA data products.
  • Analysis Software: These are for in-depth use of EOVSA data (from calibrated visibilities) and tools for quantitative analysis.
    • SunCASA A wrapper around CASA (the Common Astronomy Software Applications package) for synthesis imaging and visualizing solar spectral imaging data. CASA is one of the leading software tool for "supporting the data post-processing needs of the next generation of radio astronomical telescopes such as ALMA and VLA", an international effort led by the National Radio Astronomy Observatory. The current version of CASA uses Python (2.7) interface. More information about CASA can be found on NRAO's CASA website . Note, CASA is available ONLY on UNIX-BASED PLATFORMS (and therefore, so is SunCASA).
    • GSFIT A IDL-widget(GUI)-based spectral fitting package called gsfit, which provides a user-friendly display of EOVSA image cubes and an interface to fast fitting codes (via platform-dependent shared-object libraries).
    • pyGSFIT A Python-widget(pyQT)-based spectral fitting package, which provides a user-friendly display of EOVSA image cubes, spatially resolved spectra, and an interface to scipy-based fitting codes.
    • Spectrogram Software
    • Mapping Software
  • Data Analysis Guides (for those who start from raw data)

EOVSA Documentation


EOVSA System Software

EOVSA 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

2023 January; February; March; April; May; June; July; August; September; October; November; December

2024 January; February; March; April;May; June; July; August; September; October; November; December

EOVSA Scientist on Duty

OVRO-LWA Solar-Dedicated Spectroscopic Imager

The OVRO-LWA (Owens Valley Radio Observatory Long Wavelength Array) has recently been upgraded to include a solar-dedicated beam and two solar imaging modes (slow visibilities of 352 antennas with a 10-s cadence, and fast visibilities of 48 antennas with a 0.1-s cadence). The large collecting area and excellent calibration provide unprecedented high-sensitivity imaging of the quiet Sun and bursts. The array is currently in commissioning and observations are not yet continuous, but they are becoming more so. See the daily realtime data at http://ovsa.njit.edu/status.php for real-time display of the spectrogram and a selection of images, both updated on a 1-min cadence.

Solar-Dedicated Modes

  • Beamformer: the beamformer uses the 256 core antennas to form a synthesized beam of more than 1 degree in size that tracks the Sun from sunrise to sunset. This permits a continuous record of the full-Stokes total flux (without spatial resolution) of the Sun (a dynamic spectrum) with 24 kHz frequency resolution (3072 frequencies from 15-90 MHz) and as low as 1 ms time resolution.
  • Slow Visibility Imaging: in this mode, the entire 352-element array is interferometrically correlated to provide visibilities for imaging at all 3072 frequencies at 10-s time resolution. This is ideal for imaging quiet Sun and slowly-varying emission such as coronal mass ejections and active region variability.
  • Fast Visibility Imaging: in this mode, a subset of 48 antennas (chosen to include mainly outer antennas to maintain good spatial resolution) is interferometrically correlated to provide visibilities for imaging at 768 frequencies (96 kHz frequency resolution) at 0.1-s time resolution. This is ideal for imaging rapidly varying emission such as type II and type III bursts as well as many other solar spectral fine structures.

Inital Data Access

In its current commissioning state, we try to run the beamformer and imaging pipeline every day in real-time since November 2023 (no latency for beamforming spectrograms and 5-10 min latency for images). Quicklook real-time spectrograms/images can be accessed from http://ovsa.njit.edu/status.php. To access data from previous days, use the following links (replace yyyymmdd with the date you desire):

Note our pipeline processing development is still in the early phase. For example, absolute flux calibrations have not been done for the beamformer spectrograms. Also, artificial effects (including ionospheric refraction effects) are present in the images that cause distortions/shifts. We caution interested users only to consider them for quick-look purposes at this point. Please contact the EOVSA PIs (Dale Gary, Bin Chen) if you intend to use them for science.

OVRO-LWA Operation Notes

OVRO-LWA Operation Notes

Tohbans

Trouble Shooting Guide

Tohban Records

Owen's Notes

Caius' Notes

Tohban EOVSA Imaging Tutorial A-Z

Tohban OVRO-LWA Imaging Tutorial

Tohban Guide to Self Calibration and Imaging for EOVSA

Guide to Upgrade SolarSoft(SSW)

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.

2024
Collier, H., Hayes, L. A., Yu, S., Battaglia, A. F., Ashfield, W., Polito, V., Harra, L. K., & Krucker, S. (2024), arXiv e-prints, arXiv:2402.10546. “Localising pulsations in the hard X-ray and microwave emission of an X-class flare”
Saqri, J., Veronig, A. M., Battaglia, A. F., Dickson, E. C. M., Gary, D. E., & Krucker, S. (2024), Astronomy and Astrophysics, 683, A41. "Efficiency of solar microflares in accelerating electrons when rooted in a sunspot"
2023
Tan, B., Yan, Y., Huang, J., Zhang, Y., Tan, C., & Zhu, X. (2023), Advances in Space Research, 72, 5563. "The physics of solar spectral imaging observations in dm-cm wavelengths and the application on space weather"
Li, D., Li, Z., Shi, F., Su, Y., Chen, W., Yu, F., Li, C., Qiu, Y., Huang, Y., & Ning, Z. (2023), Astronomy and Astrophysics, 680, L15. "Observational signature of continuously operating drivers of decayless kink oscillation"
Wang, M., Chen, B., Yu, S., Gary, D. E., Lee, J., Wang, H., & Cohen, C. (2023), The Astrophysical Journal, 954, 32. "The Solar Origin of an In Situ Type III Radio Burst Event"
Gary, D. E. (2023), Annual Review of Astronomy and Astrophysics, 61, 427. "New Insights from Imaging Spectroscopy of Solar Radio Emission"
Nita, G. M., Fleishman, G. D., Kuznetsov, A. A., Anfinogentov, S. A., Stupishin, A. G., Kontar, E. P., Schonfeld, S. J., Klimchuk, J. A., & Gary, D. E. (2023), The Astrophysical Journal Supplement Series, 267, 6. "Data-constrained Solar Modeling with GX Simulator"
Song, D.-C., Tian, J., Li, Y., Ding, M. D., Su, Y., Yu, S., Hong, J., Qiu, Y., Rao, S., Liu, X., Li, Q., Chen, X., Li, C., & Fang, C. (2023), The Astrophysical Journal, 952, L6. "Spectral Observations and Modeling of a Solar White-light Flare Observed by CHASE"
Mondal, S., Chen, B., & Yu, S. (2023), The Astrophysical Journal, 949, 56. "Multifrequency Microwave Imaging of Weak Transients from the Quiet Solar Corona"
Kontar, E. P., Emslie, A. G., Motorina, G. G., & Dennis, B. R. (2023), The Astrophysical Journal, 947, L13. "The Efficiency of Electron Acceleration during the Impulsive Phase of a Solar Flare"
Saqri, J., Veronig, A. M., Dickson, E. C. M., Podladchikova, T., Warmuth, A., Xiao, H., Gary, D. E., Battaglia, A. F., & Krucker, S. (2023), Astronomy and Astrophysics, 672, A23. "Multi-point study of the energy release and impulsive CME dynamics in an eruptive C7 flare"
2022
Kou, Y., Cheng, X., Wang, Y., Yu, S., Chen, B., Kontar, E. P., & Ding, M. (2022), Nature Communications, 13, 7680. "Microwave imaging of quasi-periodic pulsations at flare current sheet"
Chertok, I. M. (2022), Monthly Notices of the Royal Astronomical Society, 517, 2709. "On some features of the solar proton event on 2021 October 28 - GLE73"
Lörinčík, J., Polito, V., De Pontieu, B., Yu, S., & Freij, N. (2022), Frontiers in Astronomy and Space Sciences, 9, 334. "Rapid variations of Si IV spectra in a flare observed by interface region imaging spectrograph at a sub-second cadence"
Klein, K.-L., Musset, S., Vilmer, N., Briand, C., Krucker, S., Francesco Battaglia, A., Dresing, N., Palmroos, C., & Gary, D. E. (2022), Astronomy and Astrophysics, 663, A173. "The relativistic solar particle event on 28 October 2021: Evidence of particle acceleration within and escape from the solar corona"
Fleishman, G. D., Nita, G. M., Chen, B., Yu, S., & Gary, D. E. (2022), Nature, 606, 674. "Solar flare accelerates nearly all electrons in a large coronal volume"
Li, X., Guo, F., Chen, B., Shen, C., & Glesener, L. (2022), The Astrophysical Journal, 932, 92. "Modeling Electron Acceleration and Transport in the Early Impulsive Phase of the 2017 September 10th Solar Flare"
Zhang, J., Chen, B., Yu, S., Tian, H., Wei, Y., Chen, H., Tan, G., Luo, Y., & Chen, X. (2022), The Astrophysical Journal, 932, 53. "Implications for Additional Plasma Heating Driving the Extreme-ultraviolet Late Phase of a Solar Flare with Microwave Imaging Spectroscopy"
Liu, N., Jing, J., Xu, Y., & Wang, H. (2022), The Astrophysical Journal, 930, 154. "Multi-instrument Comparative Study of Temperature, Number Density, and Emission Measure during the Precursor Phase of a Solar Flare"
López, F. M., Giménez de Castro, C. G., Mandrini, C. H., Simões, P. J. A., Cristiani, G. D., Gary, D. E., Francile, C., & Démoulin, P. (2022), Astronomy and Astrophysics, 657, A51. "A solar flare driven by thermal conduction observed in mid-infrared"
Unverferth, J., & Longcope, D. (2021), The Astrophysical Journal, 923, 248. "Examining Flux Tube Interactions as a Cause of Sub-alfvénic Outflow"
2021
Wei, Y., Chen, B., Yu, S., Wang, H., Jing, J., & Gary, D. E. (2021), The Astrophysical Journal, 923, 213. "Coronal Magnetic Field Measurements along a Partially Erupting Filament in a Solar Flare"
Jing, J., Inoue, S., Lee, J., Li, Q., Nita, G. M., Xu, Y., Liu, C., Gary, D. E., & Wang, H. (2021), The Astrophysical Journal, 922, 108. "Understanding the Initiation of the M2.4 Flare on 2017 July 14"
Battaglia, A. F., Saqri, J., Massa, P., Perracchione, E., Dickson, E. C. M., Xiao, H., Veronig, A. M., Warmuth, A., Battaglia, M., Hurford, G. J., Meuris, A., Limousin, O., Etesi, L., Maloney, S. A., Schwartz, R. A., Kuhar, M., Schuller, F., Senthamizh Pavai, V., Musset, S., Ryan, D. F., Kleint, L., Piana, M., Massone, A. M., Benvenuto, F., Sylwester, J., Litwicka, M., Stȩślicki, M., Mrozek, T., Vilmer, N., Fárník, F., Kašparová, J., Mann, G., Gallagher, P. T., Dennis, B. R., Csillaghy, A., Benz, A. O., & Krucker, S. (2021), Astronomy and Astrophysics, 656, A4. "STIX X-ray microflare observations during the Solar Orbiter commissioning phase"
Shaik, S. B., & Gary, D. E. (2021), The Astrophysical Journal, 919, 44. "Implications of Flat Optically Thick Microwave Spectra in Solar Flares for Source Size and Morphology"
Kocharov, L., Omodei, N., Mishev, A., Pesce-Rollins, M., Longo, F., Yu, S., Gary, D. E., Vainio, R., & Usoskin, I. (2021), The Astrophysical Journal, 915, 12. "Multiple Sources of Solar High-energy Protons"
Chen, B., Battaglia, M., Krucker, S., Reeves, K. K., & Glesener, L. (2021), The Astrophysical Journal, 908, L55. "Energetic Electron Distribution of the Coronal Acceleration Region: First Results from Joint Microwave and Hard X-Ray Imaging Spectroscopy"
Chhabra, S., Gary, D. E., Hallinan, G., Anderson, M. M., Chen, B., Greenhill, L. J., & Price, D. C. (2021), The Astrophysical Journal, 906, 132. "Imaging Spectroscopy of CME-associated Solar Radio Bursts using OVRO-LWA"
2020 and earlier
Reeves, K. K., Polito, V., Chen, B., Galan, G., Yu, S., Liu, W., & Li, G. (2020), The Astrophysical Journal, 905, 165. "Hot Plasma Flows and Oscillations in the Loop-top Region During the 2017 September 10 X8.2 Solar Flare"
Nindos, A. (2020), Frontiers in Astronomy and Space Sciences, 7, 57. "Incoherent Solar Radio Emission"
Yu, S., Chen, B., Reeves, K. K., Gary, D. E., Musset, S., Fleishman, G. D., Nita, G. M., & Glesener, L. (2020), The Astrophysical Journal, 900, 17. "Magnetic Reconnection during the Post-impulsive Phase of a Long-duration Solar Flare: Bidirectional Outflows as a Cause of Microwave and X-Ray Bursts"
Chen, B., Yu, S., Reeves, K. K., & Gary, D. E. (2020), The Astrophysical Journal, 895, L50. "Microwave Spectral Imaging of an Erupting Magnetic Flux Rope: Implications for the Standard Solar Flare Model in Three Dimensions"
Kuroda, N., Fleishman, G. D., Gary, D. E., Nita, G. M., Chen, B., & Yu, S. (2020), Frontiers in Astronomy and Space Sciences, 7, 22. "Evolution of Flare-accelerated Electrons Quantified by Spatially Resolved Analysis"
Glesener, L., Krucker, S., Duncan, J., Hannah, I. G., Grefenstette, B. W., Chen, B., Smith, D. M., White, S. M., & Hudson, H. (2020), The Astrophysical Journal, 891, L34. "Accelerated Electrons Observed Down to <7 keV in a NuSTAR Solar Microflare"
Karlický, M., Chen, B., Gary, D. E., Kašparová, J., & Rybák, J. (2020), The Astrophysical Journal, 889, 72. "Drifting Pulsation Structure at the Very Beginning of the 2017 September 10 Limb Flare"
Fleishman, G. D., Gary, D. E., Chen, B., Kuroda, N., Yu, S., & Nita, G. M. (2020), Science, 367, 278. "Decay of the coronal magnetic field can release sufficient energy to power a solar flare"
Chen, B., Shen, C., Gary, D. E., Reeves, K. K., Fleishman, G. D., Yu, S., Guo, F., Krucker, S., Lin, J., Nita, G. M., & Kong, X. (2020), Nature Astronomy, 4, 1140. "Measurement of magnetic field and relativistic electrons along a solar flare current sheet"
Lee, J. (2018), Journal of Astronomy and Space Sciences, 35, 211. "Analysis of Solar Microwave Burst Spectrum, I. Nonuniform Magnetic Field"
Gary, D. E., Bastian, T. S., Chen, B., Fleishman, G. D., & Glesener, L. (2018), Science with a Next Generation Very Large Array, 517, 99. "Radio Observations of Solar Flares"
Polito, V., Dudík, J., Kašparová, J., Dzifčáková, E., Reeves, K. K., Testa, P., & Chen, B. (2018), The Astrophysical Journal, 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, D. E., Chen, B., Dennis, B. R., Fleishman, G. D., Hurford, G. J., Krucker, S., McTiernan, J. M., Nita, G. M., Shih, A. Y., White, S. M., & Yu, S. (2018), The Astrophysical Journal, 863, 83. "Microwave and Hard X-Ray Observations of the 2017 September 10 Solar Limb Flare"
Fleishman, G. D., Nita, G. M., Kuroda, N., Jia, S., Tong, K., Wen, R. R., & Zhizhuo, Z. (2018), The Astrophysical Journal, 859, 17. "Revealing the Evolution of Non-thermal Electrons in Solar Flares Using 3D Modeling"
Kuroda, N., Gary, D. E., Wang, H., Fleishman, G. D., Nita, G. M., & Jing, J. (2018), The Astrophysical Journal, 852, 32. "Three-dimensional Forward-fit Modeling of the Hard X-Ray and Microwave Emissions of the 2015 June 22 M6.5 Flare"
Wang, H., Liu, C., Ahn, K., Xu, Y., Jing, J., Deng, N., Huang, N., Liu, R., Kusano, K., Fleishman, G. D., Gary, D. E., & Cao, W. (2017), Nature Astronomy, 1, 0085. "High-resolution observations of flare precursors in the low solar atmosphere"
Nita, G. M., Hickish, J., MacMahon, D., & Gary, D. E. (2016), Journal of Astronomical Instrumentation, 5, 1641009-7366. "EOVSA Implementation of a Spectral Kurtosis Correlator for Transient Detection and Classification"
Nita, G. M., & Gary, D. E. (2016), Journal of Geophysical Research (Space Physics), 121, 7353. "Measurement of duration and signal-to-noise ratio of astronomical transients using a Spectral Kurtosis spectrometer"
Wang, Z., Gary, D. E., Fleishman, G. D., & White, S. M. (2015), The Astrophysical Journal, 805, 93. "Coronal Magnetography of a Simulated Solar Active Region from Microwave Imaging Spectropolarimetry"
Gary, D. E., Fleishman, G. D., & Nita, G. M. (2013), Solar Physics, 288, 549. "Magnetography of Solar Flaring Loops with Microwave Imaging Spectropolarimetry"

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).


Radio Data from Around The Heliosphere

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