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Radio emissions from double RHESSI TGFs.

Publication ,  Journal Article
Mezentsev, A; Østgaard, N; Gjesteland, T; Albrechtsen, K; Lehtinen, N; Marisaldi, M; Smith, D; Cummer, S
Published in: Journal of geophysical research. Atmospheres : JGR
July 2016

A detailed analysis of Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) terrestrial gamma ray flashes (TGFs) is performed in association with World Wide Lightning Location Network (WWLLN) sources and very low frequency (VLF) sferics recorded at Duke University. RHESSI clock offset is evaluated and found to experience changes on the 5 August 2005 and 21 October 2013, based on the analysis of TGF-WWLLN matches. The clock offsets were found for all three periods of observations with standard deviations less than 100 μs. This result opens the possibility for the precise comparative analyses of RHESSI TGFs with the other types of data (WWLLN, radio measurements, etc.) In case of multiple-peak TGFs, WWLLN detections are observed to be simultaneous with the last TGF peak for all 16 cases of multipeak RHESSI TGFs simultaneous with WWLLN sources. VLF magnetic field sferics were recorded for two of these 16 events at Duke University. These radio measurements also attribute VLF sferics to the second peak of the double TGFs, exhibiting no detectable radio emission during the first TGF peak. Possible scenarios explaining these observations are proposed. Double (multipeak) TGFs could help to distinguish between the VLF radio emission radiated by the recoil currents in the +IC leader channel and the VLF emission from the TGF producing electrons.

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Published In

Journal of geophysical research. Atmospheres : JGR

DOI

EISSN

2169-8996

ISSN

2169-897X

Publication Date

July 2016

Volume

121

Issue

13

Start / End Page

8006 / 8022

Related Subject Headings

  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences
 

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Mezentsev, A., Østgaard, N., Gjesteland, T., Albrechtsen, K., Lehtinen, N., Marisaldi, M., … Cummer, S. (2016). Radio emissions from double RHESSI TGFs. Journal of Geophysical Research. Atmospheres : JGR, 121(13), 8006–8022. https://doi.org/10.1002/2016jd025111
Mezentsev, Andrew, Nikolai Østgaard, Thomas Gjesteland, Kjetil Albrechtsen, Nikolai Lehtinen, Martino Marisaldi, David Smith, and Steven Cummer. “Radio emissions from double RHESSI TGFs.Journal of Geophysical Research. Atmospheres : JGR 121, no. 13 (July 2016): 8006–22. https://doi.org/10.1002/2016jd025111.
Mezentsev A, Østgaard N, Gjesteland T, Albrechtsen K, Lehtinen N, Marisaldi M, et al. Radio emissions from double RHESSI TGFs. Journal of geophysical research Atmospheres : JGR. 2016 Jul;121(13):8006–22.
Mezentsev, Andrew, et al. “Radio emissions from double RHESSI TGFs.Journal of Geophysical Research. Atmospheres : JGR, vol. 121, no. 13, July 2016, pp. 8006–22. Epmc, doi:10.1002/2016jd025111.
Mezentsev A, Østgaard N, Gjesteland T, Albrechtsen K, Lehtinen N, Marisaldi M, Smith D, Cummer S. Radio emissions from double RHESSI TGFs. Journal of geophysical research Atmospheres : JGR. 2016 Jul;121(13):8006–8022.

Published In

Journal of geophysical research. Atmospheres : JGR

DOI

EISSN

2169-8996

ISSN

2169-897X

Publication Date

July 2016

Volume

121

Issue

13

Start / End Page

8006 / 8022

Related Subject Headings

  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences