Results 41 to 50 of about 6,222 (212)

Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]

, 2011
We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B., Freeman, A., Li, Z., Pi, X., Rosen, P.   +4 more
core   +2 more sources

Periodic spacing between consecutive equatorial plasma bubbles

Geophysical Research Letters, 2010
We analyze three‐years of data collected by a field‐aligned airglow imaging system located at the Cerro Tololo Inter‐American Observatory near La Serena, Chile to determine the occurrence of equatorial plasma bubbles (EPBs). On 317 of the 552 predominately clear nights of observations, structure indicative of EPBs is present.
J. J. Makela, S. L. Vadas, R. Muryanto, T. Duly, G. Crowley   +4 more
openaire   +1 more source

Monitoring of equatorial plasma bubbles using aeronautical navigation system: a feasibility study

Earth, Planets and Space, 2023
It has long been known that field-aligned irregularities within equatorial plasma bubbles (EPBs) can cause long-range propagation of radio waves in the VHF frequencies such as those used for TV broadcasting through the so-called forward scattering ...
Keisuke Hosokawa, Susumu Saito, Hiroyuki Nakata, Chien-Hung Lin, Jia-Ting Lin, Pornchai Supnithi, Ichiro Tomizawa, Jun Sakai, Toru Takahashi, Takuya Tsugawa, Michi Nishioka, Mamoru Ishii   +11 more
doaj   +1 more source

Magnetar Driven Bubbles and the Origin of Collimated Outflows in Gamma-ray Bursts

, 2007
We model the interaction between the wind from a newly formed rapidly rotating magnetar and the surrounding supernova shock and host star. The dynamics is modeled using the two-dimensional, axisymmetric thin-shell equations.
Arons, B. D. Metzger, Begelman, Blasi, Bucciantini, Bucciantini, Bucciantini, Burrows, Burrows, Burrows, Campbell, Canto, Canto, Chakrabarty, Chevalier, Coroniti, Del Zanna, Duncan, Duncan, E. Quataert, Eichler, Frail, Fynbo, Gaensler, Gaensler, Giuliani, Goldreich, Granot, Hwang, Iwamoto, J. Arons, Kahn, Kennel, Kirk, Komissarov, Komissarov, Kouveliotou, Lamers, LeBlanc, Lyubarsky, Lyubarsky, MacFadyen, Mazzali, Mazzali, Metzger, Michel, Moiseenko, Morsony, Muno, N. Bucciantini, Ostriker, Pavlov, Podsiadlowski, Pons, Qian, Sato, Soderberg, Stevens, T. A. Thompson, Thompson, Thompson, Thompson, Thompson, Usov, Uzdensky, Uzdensky, Van Der Swaluw, Wang, Weisskopf, Wheeler, Wilkin, Woods, Woosley, Woosley   +73 more
core   +1 more source

Detection of Equatorial Plasma Bubbles v2

, 2023
Slant Total Electron Content values from Global Navigation Satellite System are used to detect the Equatorial Plasma Bubbles in the Ionosphere.
openaire   +1 more source

Asymmetric development of equatorial plasma bubbles over Brazil

, 2023
Equatorial plasma bubble (EPB) development was studied using detrended total electron content (dTEC) data over Brazil and a numerical model. The EPB characteristics were estimated using dTEC data from January 2012 to February 2016. Six hundred fifty-five nights with EPB occurrence were analyzed.
Barros, D., Wrasse, C., Takahashi, H., Carrasco, A., Figueiredo, C.   +4 more
openaire   +2 more sources

Feasibility of precise navigation in high and low latitude regions under scintillation conditions [PDF]

, 2018
Scintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) navigation. This phenomenon appears when the radio signal passes through ionospheric irregularities.
Altadill, David, Barbosa, José, Blanch Llosa, Estefania, Camps Carmona, Adriano José, González Casado, Guillermo, Juan Zornoza, José Miguel, Orús Pérez, Raul, Riba Sagarra, Jaume, Rovira Garcia, Adrià, Sanz Subirana, Jaume   +9 more
core   +3 more sources

Detection of Equatorial Plasma Bubbles v1

, 2022
Slant Total Electron Content values from Global Navigation Satellite System are used to detect the Equatorial Plasma Bubbles in the Ionosphere.
openaire   +1 more source

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

Advanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim, Wonjae Ko, Byoung‐Hoon Lee, Sanghoon Kim, Yun Do Kim, Hyunsoo Ahn, Yoon Jung, Chan Woo Lee, Kug‐Seung Lee, Eunhee Gong, Junho Lee, Minho Kim, Taeghwan Hyeon, Su‐Il In   +13 more
wiley   +1 more source

Scintillations in Southern Europe During the Geomagnetic Storm of June 2015

Remote Sensing
The sensitivity of Global Navigation Satellite System (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS users about the impacts of ionospheric disturbances at mid-latitudes.
Anna Morozova, Luca Spogli, Teresa Barata, Rayan Imam, Emanuele Pica, Juan Andrés Cahuasquí, Mohammed Mainul Hoque, Norbert Jakowski, Daniela Estaço   +8 more
doaj   +1 more source