Supplementary Materials

A terrestrial gamma-ray flash and ionospheric ultraviolet emissions powered by lightning

Torsten Neubert, Nikolai Østgaard, Victor Reglero, Olivier Chanrion, Matthias Heumesser, Krystallia Dimitriadou, Freddy Christiansen, Carl Budtz-Jørgensen, Irfan Kuvvetli, Ib Lundgaard Rasmussen, Andrey Mezentsev, Martino Marisaldi, Kjetil Ullaland, Georgi Genov, Shiming Yang, Pavlo Kochkin, Javier Navarro-Gonzalez, Paul H. Connell, Chris J. Eyles

Materials/Methods, Supplementary Text, Tables, Figures, and/or References

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  • Materials and Methods
  • Supplementary Text
  • Fig. S1
  • Captions for Data S1 to S5
  • References
Data S1
ASIM Photometer Data
The first column is the time of start of the 10-μs photometer samples and the following columns the radiances measured by the 337 nm, UV, 777 nm photometers in in microwatt per square meter (μWm-2).
Data S2
ASIM 337 nm Camera Data
The first and second column give the column and row indices of the 337 nm CCD camera pixels, the 3rd and 4th columns give the longitude and latitude of the corresponding ground projection assuming a source altitude of 12 km and a World Geodetic System 1984. The 5th column gives the pixel radiances (μW m-2 sr-1). The image integration started at 13:01:33.043 UTC and ended at 13:01:33.126 UTC.
Data S3
ASIM LED Data
Time in UTC is given of each photon detected in the LED. Only photons that correspond to energies above ADC channel 140 (70 keV) are included. To reproduce the histograms in Fig. 2, one needs to start the 10 μs-binning from13:01:33.10008 UTC.
Data S4
ASIM LED Imaging Data
The two first columns give the longitude and latitude of the corresponding ground projection assuming a source altitude of 12 km and a World Geodetic System 1984. The last column gives the maximum likelihood for the arrival direction of photons from an assumed point source, using information on the coded mask in front of the pixelated sensors (14).
Data S5
ASIM HED Data
Time in UTC is given of each photon detected in the HED. All ADC channels are included, which corresponds to >300 keV gamma photons. To reproduce the histograms in Fig. 2 one needs to start the 10 μs-binning from 13:01:33.10008 UTC.