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Polarimetric measurements, especially if extended at high energy, are expected to provide important insights into the mechanisms underlying the acceleration of relativistic particles in jets. In a previous work we have shown that the…

High Energy Astrophysical Phenomena · Physics 2020-09-09 F. Tavecchio , M. Landoni , L. Sironi , P. Coppi

Supernova can be polarized by an asymmetry in the explosion process, an off-center source of illumination, scattering in an envelope distorted by rotation or a binary companion, or scattering by the circumstellar dust. Careful polarimetry…

Astrophysics · Physics 2007-05-23 Lifan Wang

We study point-like explosive events (EE), characterized by emission in the far wings of spectral lines, in a quiet region near the South Pole, using Interface Region Imaging Spectrograph (IRIS) spectra at two slit positions, slit-jaw (SJ)…

Solar and Stellar Astrophysics · Physics 2023-02-08 C. E. Alissandrakis , J. -C. Vial

We propose and compare methods for the analysis of extreme events in complex systems governed by PDEs that involve random parameters, in situations where we are interested in quantifying the probability that a scalar function of the…

Optimization and Control · Mathematics 2025-08-12 Shanyin Tong , Eric Vanden-Eijnden , Georg Stadler

Energy dissipation is highly intermittent in turbulent plasmas, being localized in coherent structures such as current sheets. The statistical analysis of spatial dissipative structures is an effective approach to studying turbulence. In…

High Energy Astrophysical Phenomena · Physics 2015-09-16 Vladimir Zhdankin , Dmitri A. Uzdensky , Stanislav Boldyrev

Evidence for plumes of water on Europa has previously been found using the Hubble Space Telescope (HST) using two different observing techniques. Roth et al. (2014) found line emission from the dissociation products of water. Sparks et al.…

Earth and Planetary Astrophysics · Physics 2019-08-10 William B. Sparks , Britney E. Schmidt , Melissa A. McGrath , Kevin P. Hand , John R. Spencer , Misty Cracraft , Susana E. Deustua

High-resolution in situ measurements from the three Swarm spacecraft, in a string-of-pearls configuration, provide new insights about the combined role of flow channel events and particle impact ionization in creating $\textit{F}$ region…

The sensitizing effect of cavities in the form of microbubbles on the shock initiation of a homogeneous liquid explosive is studied computationally. While the presence of voids in an explosive has long been known to induce so-called hot…

Fluid Dynamics · Physics 2020-09-28 XiaoCheng Mi , Louisa Michael , Nikolaos Nikiforakis , Andrew J. Higgins

Liquid wave studies have shown that under certain constructive interference conditions, an abnormal size wave could be generated at a specific point. This type of wave, described long ago in the literature, was named 'Draupner Wave' in…

Geophysics · Physics 2020-04-16 Stephane Brule , Stefan Enoch , Sebastien Guenneau

We present an investigation comparing the potential impacts of offshore and onshore crude oil loading sites on surface trajectories of spilled oil particles in the regions near the Port of Corpus Christi, Texas. Oil transport is established…

Computational Physics · Physics 2025-06-02 Shoshana Reich , Edward Buskey , Clint Dawson , Eirik Valseth

We investigate the feasibility of using rocket launches, specifically rocketquakes, as a seismic source to image subsurface velocity and geology of planetary bodies. Toward this goal, we record the seismic vibrations excited by a Falcon 9…

It has often been proposed that the formation of large-scale motion (or bulges) is a consequence of successive mergers and/or growth of near-wall hairpin vortices. In the present study, we report our direct observation that large-scale…

Fluid Dynamics · Physics 2017-11-01 Matteo de Giovanetti , Hyung Jin Sung , Yongyun Hwang

The impact of large atmospheric disturbances on deep benthic communities is not well known quantitatively. Observations are scarce but may reveal specific processes leading to turbulent disturbances. Here, we present high-resolution…

Atmospheric and Oceanic Physics · Physics 2020-04-06 Hans van Haren , Wu-Cheng Chi , Chu-Fang Yang , Yiing-Jang Yang , Sen Jan

Roth et al (2014a) reported evidence for plumes of water venting from a southern high latitude region on Europa - spectroscopic detection of off-limb line emission from the dissociation products of water. Here, we present Hubble Space…

Earth and Planetary Astrophysics · Physics 2016-10-05 W. B. Sparks , K. P. Hand , M. A. McGrath , E. Bergeron , M. Cracraft , S. E. Deustua

In this paper, we present an analysis of seismic spectra that were calculated from all broadband channels (BH?) made available through IRIS, NIED F-net and Orfeus servers covering the past five years and beyond. A general characterization…

Geophysics · Physics 2012-02-23 Michael William Coughlin , Jan Harms

We use Lagrangian diagnostics (the leaking and the exchange methods) to characterize surface transport out of and between selected regions in the Western Mediterranean. Velocity fields are obtained from a numerical model. Residence times of…

Atmospheric and Oceanic Physics · Physics 2007-05-23 Judit Schneider , Vicente Fernandez , Emilio Hernandez-Garcia

Monitoring the seismic activity of volcanoes is crucial for hazard assessment and eruption forecasting. The layout of each seismic network determines the information content of recorded data about volcanic earthquakes, and experimental…

Geophysics · Physics 2025-06-11 Dominik Strutz , Andrew Curtis

Accurate information on waves and storm surges is essential to understand coastal hazards that are expected to increase in view of global warming and rising sea levels. Despite the recent advancement in development and application of…

Recent work published by Lindsey et al find evidence for a deep and compact seismic source for the sunquake associated with the 2011 July 30 M9.3 flare, as well as seismic emission extending up to 10 mHz. We examine the sunquake…

Solar and Stellar Astrophysics · Physics 2022-10-05 John T. Stefan , Alexander G. Kosovichev

Migration-based earthquake location methods may encounter the polarity reversal issue due to the non-explosive components of seismic source, leading to an unfocused migration image. Various methods have been proposed, yet producing an…

Geophysics · Physics 2023-04-17 Wenhuan Kuang , Jie Zhang , Wei Zhang