Cluster observations of ELF/VLF signals generated by modulated heating of the lower ionosphere with the HAARP HF transmitter

Autor: Timothy F. Bell, Jean-Gabriel Trotignon, Umran S. Inan, Jean-Louis Rauch, P. Canu, E. J. Kennedy, M. Platino, Jolene S. Pickett

Publikováno v: Annales Geophysicae, Vol 22, Iss 7, Pp 2643-2653 (2004)
Annales Geophysicae, Vol 22, Pp 2643-2653 (2004)
Annales Geophysicae
Annales Geophysicae, European Geosciences Union, 2004, 22 (7), pp.2643-2653. ⟨10.5194/angeo-22-2643-2004⟩

It is now well known that amplitude modulated HF transmissions into the ionosphere can be used to generate ELF/VLF signals using the so-called "electrojet antenna". Although most observations of the generated ELF/VLF signals have been made on the gro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0cc78e95f1ffe367e96057925ff1670
https://www.ann-geophys.net/22/2643/2004/

Finite difference modeling of coherent wave amplification in the Earth's radiation belts

Autor: Vijay Harid, Mark Golkowski, Timothy F. Bell, J. D. Li, Umran S. Inan

Publikováno v: Geophysical Research Letters

Modeling of gyroresonant wave-particle interactions in the radiation belts requires solving the Vlasov-Maxwell system of equations in an inhomogenous background geomagnetic field. Previous works have employed particle-in-cell methods or Eulerian solv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bc898ddc94753007323253989bb6779
https://doi.org/10.1002/2014gl061787

Effects of thunderstorm-driven runaway electrons in the conjugate hemisphere: Purple sprites, ionization enhancements, and gamma rays

Autor: Nikolai Lehtinen, Umran S. Inan, Timothy F. Bell

Publikováno v: Journal of Geophysical Research: Space Physics. 106:28841-28856

The presence of energetic runaway electron beams above thunderstorms is suggested by observations of terrestrial gamma ray flashes [Fishman et al., 1994], as well as by theoretical work [Roussel-Dupre and Gurevich, 1996; Lehtinen et al., 1999], altho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::366e9b746b72cf23655a9fbc2f21c426
https://doi.org/10.1029/2000ja000160

Lightning-induced energetic electron flux enhancements in the drift loss cone

Autor: Umran S. Inan, Jacob Bortnik, D. L. Chenette, Hugh J. Christian, M. Walt, Timothy F. Bell, J. B. Blake

Publikováno v: Journal of Geophysical Research: Space Physics. 106:29733-29744

With its relatively low altitude (520 670 km) orbit, SAMPEX is mostly below the stable trapping region where charged particles repeatedly drift around the Earth, especially at midlatitudes. Recent analyses of SAMPEX data have revealed a surprisingly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d59805c88ec795184f0ce38beb223f7
https://doi.org/10.1029/2001ja000067

Whistler-mode wave-injection experiments in the plasmasphere with a radio sounder

Autor: Jayashree Harikumar, X. Chen, D. L. Carpenter, Vikas S. Sonwalkar, Timothy F. Bell

Publikováno v: Journal of Atmospheric and Solar-Terrestrial Physics. 63:1199-1216

Whistler-mode wave-injection experiments with a high-altitude radio sounder o6er an opportunity to greatly extend the observing power of satellites such as imager for magnetopause-to-aurora global exploration (IMAGE) when the satellite is within or n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4679ae32c2944e253e616fbbc145bfa1
https://doi.org/10.1016/s1364-6826(00)00223-6