Results 61 to 70 of about 384,338 (204)

Processing of Doppler Spectra Collected by an Airborne Cloud Radar for the Calculation of Skewness, Kurtosis, and Other Spectral Parameters

Earth and Space Science, Volume 12, Issue 4, April 2025.
Abstract Observations from the HIAPER Cloud Radar (HCR) are used to develop a methodology to calculate Doppler spectra from an airborne platform. The method removes spectral noise and corrects the spectra for broadening caused by aircraft motion. The spectra are filtered using an objectively optimized filtering technique.
Ulrike Romatschke, Paul Romatschke, Matthew Hayman, Michael J. Dixon   +3 more
wiley   +1 more source

Searches for IceCube neutrinos from blazar flares using correlations with gamma-ray lightcurves [PDF]

EPJ Web of Conferences, 2019
Blazars have long been considered as accelerator candidates for cosmic rays. In such a scenario, hadronic interactions in the jet would produce neutrinos and gamma rays.
Raab Christoph, Aguilar Sánchez Juan Antonio   +1 more
doaj   +1 more source

Jets from compact objects [PDF]

arXiv, 2000
Some topics in the theory of jets are reviewed. These include jet precession, unconfined jets, the origin of knots, the internal shock model as a unifying theme from protostellar jets to Gamma-ray bursts, relations between the Blandford-Znajek and MHD disk-wind models, and jet collimation in magnetic acceleration models.
arxiv  

Processes and Products of Turbidity Currents and Submarine Landslides in a Glacierized Fjord (Southwind Fjord, Baffin Island)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract Sediment transported to fjords is redistributed by turbidity currents and sometimes fails on steep sidewall slopes, forming marine geohazards that are known to impact infrastructure. Since marine geohazards are poorly understood in Arctic Fjords due to lack of data and monitoring, a comprehensive study of Southwind Fjord, Baffin Island, was ...
Alexandre Normandeau, Kevin MacKillop, Clark Richards, Genevieve Philibert, Jean‐Carlos Montero‐Serrano, Meaghan Macquarrie, Robbie Bennett   +6 more
wiley   +1 more source

Let There Be Neutrons! Hadronic Photoproduction from a Large Flux of High-energy Photons

The Astrophysical Journal
We propose that neutrons may be generated in high-energy, high-flux photon environments via photo-induced reactions on pre-existing baryons. These photohadronic interactions are expected to occur in astrophysical jets and surrounding material ...
Matthew R. Mumpower, Tsung-Shung H. Lee, Nicole Lloyd-Ronning, Brandon L. Barker, Axel Gross, Samuel Cupp, Jonah M. Miller   +6 more
doaj   +1 more source

Observation of energetic protons trapped in laboratory magnetic-tower jets

New Journal of Physics, 2013
Preliminary results of the self-emission of charged particles from magnetically driven plasma jets has been investigated. The jets were launched and driven by a toroidal magnetic field generated by introducing a  ∼ 1.4 MA, 250 ns electrical current pulse
F Suzuki-Vidal, S Patankar, S V Lebedev, S N Bland, H Doyle, D Bigourd, G Burdiak, P de Grouchy, G N Hall, A J Harvey-Thompson, E Khoory, L Pickworth, J Skidmore, R A Smith, G F Swadling   +14 more
doaj   +1 more source

Simple scaling laws for astrophysical jets [PDF]

arXiv, 2006
The idea of a unified model for all astrophysical jets has been considered for quite some time. We present here a few scaling laws relevant to all type of astrophysical jets, analogous to those of \citet{sams96} which are widely used for astrophysical black holes.
arxiv  

Compositional and Textural Variability Among Tektites From Indochina and South China: Insights Into the Impact Origin of the Australasian Tektite Strewn Field

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract The Australasian tektite strewn field, approximately 0.8 Ma in age, covers nearly 10% of the Earth's surface, making it the largest and most recent strewn field globally. This study provides a comprehensive analysis of the elemental composition and texture of tektites recovered from various locations within the strewn field, particularly ...
S. Boschi, S. Goderis, S. Liao, W. Li
wiley   +1 more source

Jet rotation driven by MHD shocks in helical magnetic fields [PDF]

, 2011
In this paper we present a detailed numerical investigation of the hypothesis that a rotation of astrophysical jets can be caused by magnetohydrodynamic shocks in a helical magnetic field. Shock compression of the helical magnetic field results in a toroidal Lorentz force component which will accelerate the jet material in toroidal direction.
arxiv   +1 more source

Electron Phase Space Densities in Geostationary Orbits as Measured With GK2A, GOES‐16, and GOES‐17 Satellites

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract This study investigated electron phase space densities (PSDs) in geostationary orbits using data from Korea's geostationary satellite, GK2A, as well as GOES‐16 and GOES‐17 satellites. The PSDs were computed from electron fluxes measured by each satellite during a geomagnetically quiet period as defined by stringent conditions on geomagnetic ...
C. H. Lee, J. Seon, W. H. Seol, K. H. Kim, D. E. Larson, G. K. Parks, H. U. Auster, W. Magnes, S. Kraft, D. Y. Lee, A. Boudouridis, P. T. M. Loto'aniu, J. V. Rodriguez   +12 more
wiley   +1 more source