L. P. Babich, E. N. Donskoy, R. I. Il-'kaev, I. M. Kutsyk, and R. A. Roussel-dupre, Fundamental parameters of a relativistic runaway electron avalanche in air, Plasma Physics Reports, vol.30, issue.7, pp.616-624, 2004.
DOI : 10.1134/1.1778437

M. S. Briggs, First results on terrestrial gamma ray flashes from the Fermi Gamma-ray Burst Monitor, Journal of Geophysical Research: Space Physics, vol.111, issue.20, 2010.
DOI : 10.1029/2005JD006447

M. S. Briggs, Terrestrial gamma-ray flashes in the Fermi era: Improved???observations and analysis methods, Journal of Geophysical Research: Space Physics, vol.117, issue.52, pp.3805-3830, 2013.
DOI : 10.1029/2011JA017085

S. Celestin and V. P. Pasko, Energy and fluxes of thermal runaway electrons produced by exponential growth of streamers during the stepping of lightning leaders and in transient luminous events, Journal of Geophysical Research: Space Physics, vol.49, issue.21, pp.331510-1029, 2011.
DOI : 10.1103/PhysRevE.49.5574

S. Celestin and V. P. Pasko, Compton scattering effects on the duration of terrestrial gamma-ray flashes, Geophysical Research Letters, vol.106, issue.5163, pp.10-1029, 2012.
DOI : 10.1029/2005GL025537

S. Celestin, W. Xu, and V. P. Pasko, Terrestrial gamma ray flashes with energies up to 100 MeV produced by nonequilibrium acceleration of electrons in lightning, Journal of Geophysical Research: Space Physics, vol.39, issue.1, pp.531510-1029, 2012.
DOI : 10.1029/2012GL051351

V. Connaughton, Associations between Fermi Gamma-ray Burst Monitor terrestrial gamma ray flashes and sferics from the World Wide Lightning Location Network, Journal of Geophysical Research: Space Physics, vol.111, issue.A12, pp.10-1029, 2010.
DOI : 10.1029/2005JD006447

V. Connaughton, Radio signals from electron beams in terrestrial gamma ray flashes, Journal of Geophysical Research: Space Physics, vol.33, issue.6, pp.2313-232010, 2013.
DOI : 10.1029/2005GL025537

S. A. Cummer, G. Lu, M. S. Briggs, V. Connaughton, S. Xiong et al., The lightning-TGF relationship on microsecond timescales, Geophysical Research Letters, vol.23, issue.5163, pp.1481010-1029, 2011.
DOI : 10.1029/2011GL048099

S. A. Cummer, F. Lyu, M. S. Briggs, G. Fitzpatrick, O. J. Roberts et al., Lightning leader altitude progression in terrestrial gamma-ray flashes, Geophysical Research Letters, vol.119, issue.5163, pp.7792-779810, 2015.
DOI : 10.1002/2014JD021842

J. R. Dwyer, Source mechanisms of terrestrial gamma-ray flashes, Journal of Geophysical Research, vol.111, issue.D16, pp.10-1029, 2008.
DOI : 10.1029/2007JD009248

J. R. Dwyer and D. M. Smith, A comparison between Monte Carlo simulations of runaway breakdown and terrestrial gamma-ray flash observations, Geophysical Research Letters, vol.22, issue.20, pp.10-1029, 2005.
DOI : 10.1029/2004GL021802

J. R. Dwyer, Energetic Radiation Produced During Rocket-Triggered Lightning, Science, vol.299, issue.5607, 2003.
DOI : 10.1126/science.1078940

J. R. Dwyer, X-ray bursts associated with leader steps in cloud-to-ground lightning, Geophysical Research Letters, vol.22, issue.20, pp.10-1029, 2005.
DOI : 10.1029/2004GL021782

J. R. Dwyer, D. M. Smith, M. A. Uman, Z. Saleh, B. Grefenstette et al., Estimation of the fluence of high-energy electron bursts produced by thunderclouds and the resulting radiation doses received in aircraft, Journal of Geophysical Research, vol.22, issue.20, p.920610, 1029.
DOI : 10.1029/2009JD012039

J. R. Dwyer, D. M. Smith, and S. A. Cummer, High-Energy Atmospheric Physics: Terrestrial Gamma-Ray Flashes and Related Phenomena, Space Science Reviews, vol.26, issue.16, pp.133-196, 2012.
DOI : 10.1007/s11214-012-9894-0

G. Fishman, Discovery of Intense Gamma-Ray Flashes of Atmospheric Origin, Science, vol.264, issue.5163, pp.1313-1316, 1994.
DOI : 10.1126/science.264.5163.1313

T. Gjesteland, N. Østgaard, A. B. Collier, B. E. Carlson, C. Eyles et al., A new method reveals more TGFs in the RHESSI data, Geophysical Research Letters, vol.106, issue.1, pp.10-1029, 2012.
DOI : 10.1103/PhysRevLett.106.018501

B. W. Grefenstette, D. M. Smith, B. J. Hazelton, and L. I. Lopez, First RHESSI terrestrial gamma ray flash catalog, Journal of Geophysical Research: Space Physics, vol.32, issue.D17, pp.10-1029, 2009.
DOI : 10.1029/2005JD006447

A. V. Gurevich, On the theory of runaway electrons, Sov. Phys, J. Exper. Theor. Phys, vol.12, pp.904-912, 1961.

A. V. Gurevich, G. M. Milikh, and R. A. Roussel-dupré, Runaway electron mechanism of air breakdown and preconditioning during a thunderstorm, Physics Letters A, vol.165, issue.5-6, pp.5-6, 1992.
DOI : 10.1016/0375-9601(92)90348-P

R. S. Hansen, N. Østgaard, T. Gjesteland, and B. Carlson, How simulated fluence of photons from terrestrial gamma ray flashes at aircraft and balloon altitudes depends on initial parameters, Journal of Geophysical Research: Space Physics, vol.106, issue.1, pp.2333-2339, 2013.
DOI : 10.1103/PhysRevLett.106.018501

N. G. Lehtinen, Relativistic runaway electrons above thunderstorms, 2000.

N. Liu and J. R. Dwyer, Modeling terrestrial gamma ray flashes produced by relativistic feedback discharges, Journal of Geophysical Research: Space Physics, vol.22, issue.1, pp.2359-2376, 2013.
DOI : 10.1103/PhysRevLett.106.018501

G. Lu, S. A. Cummer, J. Li, F. Han, D. M. Smith et al., Characteristics of broadband lightning emissions associated with terrestrial gamma ray flashes, Journal of Geophysical Research: Space Physics, vol.111, issue.D7, pp.331610-1029, 2011.
DOI : 10.1029/2005JD006447

S. A. Mallios, S. Celestin, and V. P. Pasko, Production of very high potential differences by intracloud lightning discharges in connection with terrestrial gamma ray flashes, Journal of Geophysical Research: Space Physics, vol.37, issue.1, pp.912-918, 2013.
DOI : 10.1029/2009GL042065
URL : https://hal.archives-ouvertes.fr/insu-01178994

M. Marisaldi, Detection of terrestrial gamma ray flashes up to 40 MeV by the AGILE satellite, Journal of Geophysical Research: Space Physics, vol.502, issue.53, pp.10-1029, 2010.
DOI : 10.1051/0004-6361/200810527

M. Marisaldi, Gamma-Ray Localization of Terrestrial Gamma-Ray Flashes, Physical Review Letters, vol.105, issue.12, 2010.
DOI : 10.1103/PhysRevLett.105.128501

M. Marisaldi, Properties of terrestrial gamma ray flashes detected by AGILE MCAL below 30???MeV, Journal of Geophysical Research: Space Physics, vol.39, issue.1, pp.1337-135510, 2014.
DOI : 10.1029/2012GL051351

C. B. Moore, K. B. Eack, G. D. Aulich, and W. Rison, Energetic radiation associated with lightning stepped-leaders, Geophysical Research Letters, vol.22, issue.11, pp.2141-214410, 2001.
DOI : 10.1029/2001GL013140

G. D. Moss, V. P. Pasko, N. Liu, and G. Veronis, Monte Carlo model for analysis of thermal runaway electrons in streamer tips in transient luminous events and streamer zones of lightning leaders, Journal of Geophysical Research, vol.27, issue.3, pp.230710-1029, 2006.
DOI : 10.1029/2005JA011350

R. S. Nisi, N. Østgaard, T. Gjesteland, and A. B. Collier, An altitude and distance correction to the source fluence distribution of TGFs, Journal of Geophysical Research: Space Physics, vol.118, issue.10, pp.8698-870410, 2014.
DOI : 10.1002/jgra.50580

N. Østgaard, T. Gjesteland, J. Stadsnes, P. H. Connell, and B. Carlson, Production altitude and time delays of the terrestrial gamma flashes: Revisiting the Burst and Transient Source Experiment spectra, Journal of Geophysical Research: Space Physics, vol.33, issue.A2, pp.230710-1029, 2008.
DOI : 10.1029/2005GL025537

N. Østgaard, T. Gjesteland, R. S. Hansen, A. B. Collier, and B. Carlson, The true fluence distribution of terrestrial gamma flashes at satellite altitude, Journal of Geophysical Research: Space Physics, vol.15, issue.2, pp.332710-1029, 2012.
DOI : 10.1088/0963-0252/15/2/S12

N. Østgaard, T. Gjesteland, B. E. Carlson, A. B. Collier, S. A. Cummer et al., Simultaneous observations of optical lightning and terrestrial gamma ray flash from space, Geophysical Research Letters, vol.27, issue.10, pp.2423-2426, 2013.
DOI : 10.1029/1999GL010845

J. Qin and V. P. Pasko, On the propagation of streamers in electrical discharges, Journal of Physics D: Applied Physics, vol.47, issue.43, pp.10-1088, 2014.
DOI : 10.1088/0022-3727/47/43/435202

Z. Saleh, J. Dwyer, J. Howard, M. Uman, M. Bakhtiari et al., Properties of the X-ray emission from rocket-triggered lightning as measured by the Thunderstorm Energetic Radiation Array (TERA), Journal of Geophysical Research, vol.22, issue.5, p.1721010, 1029.
DOI : 10.1029/2008JD011618

M. M. Schaal, J. R. Dwyer, Z. H. Saleh, H. K. Rassoul, J. D. Hill et al., Spatial and energy distributions of X-ray emissions from leaders in natural and rocket triggered lightning, Journal of Geophysical Research: Atmospheres, vol.22, issue.D5, p.1520110, 1029.
DOI : 10.1029/2008JD011618

M. M. Schaal, The structure of X-ray emissions from triggered lightning leaders measured by a pinhole-type X-ray camera, Journal of Geophysical Research: Atmospheres, vol.19, issue.D12, pp.982-100210, 2014.
DOI : 10.1029/2012JD017897

X. Shao, T. Hamlin, and D. M. Smith, A closer examination of terrestrial gamma-ray flash-related lightning processes, Journal of Geophysical Research: Space Physics, vol.111, issue.D4, pp.10-1029, 2010.
DOI : 10.1029/2005JD006447

D. M. Smith, L. I. Lopez, R. P. Lin, and C. P. Barrington-leigh, Terrestrial Gamma-Ray Flashes Observed up to 20 MeV, Terrestrial gamma-ray flashes observed up to 20 MeV, pp.1085-1088, 2005.
DOI : 10.1126/science.1107466

D. M. Smith, A terrestrial gamma ray flash observed from an aircraft, Journal of Geophysical Research, vol.111, issue.9, pp.10-1029, 2011.
DOI : 10.1029/2011JD016252

M. A. Stanley, X. Shao, D. M. Smith, L. I. Lopez, M. B. Pongratz et al., A link between terrestrial gamma-ray flashes and intracloud lightning discharges, Geophysical Research Letters, vol.84, issue.D13, p.680310, 1029.
DOI : 10.1029/2005GL025537

M. Tavani, Terrestrial Gamma-Ray Flashes as Powerful Particle Accelerators, Physical Review Letters, vol.106, issue.1, 2011.
DOI : 10.1103/PhysRevLett.106.018501

C. T. Wilson, The acceleration of í µí»½-particles in strong electric fields such as those of thunderclouds, Proc. of the Cam, pp.10-1017, 1925.

W. Xu, S. Celestin, and V. P. Pasko, Source altitudes of terrestrial gamma-ray flashes produced by lightning leaders, Geophysical Research Letters, vol.111, issue.5163, pp.10-1029, 2012.
DOI : 10.1029/2005JD006447

W. Xu, S. Celestin, and V. P. Pasko, Modeling of X-ray emissions produced by stepping lightning leaders, Geophysical Research Letters, vol.39, issue.11, pp.7406-741210, 2014.
DOI : 10.1029/2012GL051351
URL : https://hal.archives-ouvertes.fr/insu-01174373

W. Xu, S. Celestin, and V. P. Pasko, Optical emissions associated with terrestrial gamma ray flashes, J. Geophys. Res, vol.42, pp.1355-1370, 2015.
URL : https://hal.archives-ouvertes.fr/insu-01182137