Results 21 to 30 of about 4,060 (283)

Characteristics of Fe ablation trails observed during the 1998 Leonid Meteor Shower

open access: yesGeophysical Research Letters, 2000
Eighteen Fe ablation trails were observed during the 17/18 Nov 1998 Leonid meteor shower with an airborne Fe lidar aboard the NSF/NCAR Electra aircraft over Okinawa.
Xinzhao Chu   +5 more
doaj   +1 more source

Scientific goals of optical instruments of the National Heliogeophysical Complex

open access: yesSolar-Terrestrial Physics, 2020
Studies of the upper atmosphere have to be performed using optical photometric and spectrometric means. Modern devices allow precise photometry of the glow of the night atmosphere — airglow — with high temporal spatial and spectral resolution.
Vasilyev R.V.   +11 more
doaj   +1 more source

Nitric Oxide Production by Centimeter-Sized Meteoroids and the Role of Linear and Nonlinear Processes in the Shock Bound Flow Fields

open access: yesAtmosphere, 2018
Nitric oxide (NO) is a critical indicator of energy deposition in the lower thermosphere because of its formational pathways. Thus, it is important to constrain sources of NO, such as meteoroid generated hypersonic flows below 95 km altitude.
Elizabeth A. Silber   +3 more
doaj   +1 more source

Possible Transfer of Life by Earth-Grazing Objects to Exoplanetary Systems

open access: yesLife, 2020
Recently, a 30-cm object was discovered to graze the Earth’s atmosphere and shift into a Jupiter-crossing orbit. We use the related survey parameters to calibrate the total number of such objects.
Amir Siraj, Abraham Loeb
doaj   +1 more source

THE CHALLENGES IN HYPERVELOCITY MICROPHYSICS RESEARCH ON METEOROID IMPACTS INTO THE ATMOSPHERE

open access: yesZbornik Radova: Geografski institut "Jovan Cvijić", 2020
Meteor science contributes greatly to the study of the Solar System and the Earth’s atmosphere. However, despite its importance and very long history, meteor science still has a lot to explore in the domain of meteor plasma microphysics and the meteor ...
Dejan Vinković, Maria Gritsevich
doaj   +3 more sources

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Home - About - Disclaimer - Privacy