Results 41 to 50 of about 260,299 (222)

Ultrasound Assessment of Venous and Pulmonary Congestion in Left Ventricular Assist Devices Patients

Artificial Organs, EarlyView.
Renal venous stasis index (RVI) of Doppler renal ultrasound index is the peripheral vein ultrasound associated with high right atrial pressure, and right displacement of the interatrial septum is the echocardiographic parameter associated with high pulmonary wedge pressure.
Attilio Iacovoni, Cinzia Giaccherini, Sara Paris, Raffaele Abete, Claudia Vittori, Riccardo Maria Inciardi, Ottavio Zucchetti, Amedeo Terzi, Michele Senni   +8 more
wiley   +1 more source

An Improved Halo Coronal Mass Ejection Geoeffectiveness Prediction Model Using Multiple Coronal Mass Ejection Features Based on the DC-PCA-KNN Method

The Astrophysical Journal
Coronal mass ejections (CME) are regarded as the main drivers of geomagnetic storms (GSs). In the prediction of geoeffectiveness, various CME features have been introduced without adequately considering the geoeffectiveness of CMEs and strong ...
Dalin Ye, Huimin Li, Lixin Guo, Xiaoli Jiang   +3 more
doaj   +1 more source

A Type II Radio Burst Driven by a Blowout Jet on the Sun

The Astrophysical Journal, 2023
Type II radio bursts are often associated with coronal shocks that are typically driven by coronal mass ejections (CMEs) from the Sun. Here we conduct a case study of a type II radio burst that is associated with a C4.5-class flare and a blowout jet, but
Zhenyong Hou, Hui Tian, Wei Su, Maria S. Madjarska, Hechao Chen, Ruisheng Zheng, Xianyong Bai, Yuanyong Deng   +7 more
doaj   +1 more source

On the Optimal Prediction of Extreme Events in Heavy‐Tailed Time Series With Applications to Solar Flare Forecasting

Journal of Time Series Analysis, EarlyView.
ABSTRACT The prediction of extreme events in time series is a fundamental problem arising in many financial, scientific, engineering, and other applications. We begin by establishing a general Neyman–Pearson‐type characterization of optimal extreme event predictors in terms of density ratios.
Victor Verma, Stilian Stoev, Yang Chen
wiley   +1 more source

Probing Coronal Mass Ejection Inclination Effects with EUHFORIA

The Astrophysical Journal
Coronal mass ejections (CMEs) are complex magnetized plasma structures in which the magnetic field spirals around a central axis, forming what is known as a flux rope (FR).
Karmen Martinić, Eleanna Asvestari, Mateja Dumbović, Tobias Rindlisbacher, Manuela Temmer, Bojan Vršnak   +5 more
doaj   +1 more source

The Magnetic Topology of Coronal Mass Ejection sources [PDF]

Astrophys.J.662:1293-1301,2007, 2007
In an attempt to test current initiation models of coronal mass ejections (CMEs), with an emphasis on the magnetic breakout model, we inspect the magnetic topology of the sources of 26 CME events in the context of their chromospheric and coronal response in an interval of approximately nine hours around the eruption onset.
arxiv   +1 more source

Dynamic disappearance of prominences and their geoeffectiveness [PDF]

Geofísica Internacional, 2008
We study 14 cases of dynamic “disparition brusque” (DBd), the sudden disappearance of quiescent filaments/prominences, during two solar minima: 1985-1986 and 1994.
Z. Mouradian, L. Taliashvili, J. Páez
doaj  

Partially Erupted Prominence Material as a Diagnostic of Coronal Mass Ejection Trajectory

Space Weather, 2023
Coronal mass ejections (CMEs) are energetic releases of large‐scale magnetic structures from the Sun. CMEs can have impacts on spacecraft and at Earth. This trajectory is typically assumed to be radial, but often the CME moves outward with some spatial ...
B. A. Hovis‐Afflerbach, B. J. Thompson, E. I. Mason   +2 more
doaj   +1 more source

Multipoint radio probe of the solar corona: The trans-coronal radio array fleet

Frontiers in Astronomy and Space Sciences, 2022
The Trans-Coronal Radio Array Fleet (T-CRAF) is a mission concept designed to continuously probe the magnetic field and plasma density structure of the corona at heliocentric distances of ≈ 2 − 10 R⊙ (solar radius, R⊙ = 695, 700 km).
Jason E. Kooi, David B. Wexler, Elizabeth A. Jensen, Brian E. Wood   +3 more
doaj   +1 more source

Effects of Coronal Mass Ejections on Distant Coronal Streamers [PDF]

, 2014
The effects of a large coronal mass ejection (CME) on a solar coronal streamer located roughly 90 degrees from the main direction of the CME propagation observed on January 2, 2012 by the SOHO/LASCO coronagraph are analyzed. Radial coronal streamers undergo some bending when CMEs pass through the corona, even at large angular distances from the ...
arxiv   +1 more source