Results 11 to 20 of about 17,392 (258)

A Review of Infrasound and Seismic Observations of Sample Return Capsules since the End of the Apollo Era in Anticipation of the OSIRIS-REx Arrival

open access: yesAtmosphere, 2023
Advancements in space exploration and sample return technology present a unique opportunity to leverage sample return capsules (SRCs) towards studying atmospheric entry of meteoroids and asteroids.
Elizabeth A. Silber   +2 more
doaj   +1 more source

Altitudinal dependence of meteor radio afterglows measured via optical counterparts

open access: yesGeophysical Research Letters, 2016
Utilizing the all‐sky imaging capabilities of the first station of the Long Wavelength Array along with a host of all‐sky optical cameras, we have now observed 44 optical meteor counterparts to radio afterglows.
K. S. Obenberger   +6 more
doaj   +1 more source

Thermalization of Sputtered Particles as the Source of Diffuse Radiation from High Altitude Meteors [PDF]

open access: yes, 2005
High altitude meteors become luminous at altitudes above $\sim$130 km, where the standard ablation theory of meteor light production is not applicable. The physical mechanism responsible for their glow has not been known. We present a model that explains
Vinkovic, Dejan
core   +2 more sources

Contribution of meteor flux in the occurrence of sporadic-E (Es) layers over the Arabian Peninsula [PDF]

open access: yesAnnales Geophysicae, 2021
A sporadic-E (Es) layer is generally associated with a thin-layered structure present in the lower ionosphere, mostly consisting of metallic ions. This metallic ion layer is formed when meteors burn in the upper atmosphere, resulting in the deposition of
M. M. Shaikh   +7 more
doaj   +1 more source

The 2011 October Draconids outburst. I. Orbital elements, meteoroid fluxes and 21P/Giacobini-Zinner delivered mass to Earth [PDF]

open access: yes, 2013
On October 8th, 2011 the Earth crossed the dust trails left by comet 21P/Giacobini-Zinner during its XIX and XX century perihelion approaches with the comet being close to perihelion.
Alonso-Azcárate, Jacinto   +19 more
core   +2 more sources

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

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

Retinal meteor

open access: yesIndian Journal of Ophthalmology, 2017
We describe a case of a 65-year old man diagnosed with retinal vasoproliferative tumour secondary to posterior uveitis. The fluorescein angiography shows an interesting meteor-like leak emanating from the tumour and rising towards the superior retina in the later frames of the angiogram.
Ramesh Venkatesh   +3 more
openaire   +3 more sources

PF191012 Myszyniec - highest Orionid meteor ever recorded [PDF]

open access: yes, 2013
On the night of Oct 18/19, 2012 at 00:23 UT a -14.7 mag Orionid fireball occurred over northeastern Poland. The precise orbit and atmospheric trajectory of the event is presented, based on the data collected by five video and one photographic Polish ...
Fietkiewicz, K.   +11 more
core   +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

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