Results 41 to 50 of about 1,476 (186)

Debye‐Scale Bipolar Structures and Their Role in the Electron Trajectory Instability at the Bow Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A number of mechanisms have been suggested to operate within the terrestrial bow shock to redistribute energy contained in the incoming solar wind flow. The majority of mechanisms involve the generation of turbulence while some are based on particle motion alone.
Simon N. Walker, Michael Gedalin, Michael A. Balikhin   +2 more
wiley   +1 more source

Jet precession in active galaxies

The Astrophysical Journal, 1988
The formation and evolution of massive binary black holes in galactic nuclei are studied with respect to the loss-cone filling model for the fueling of massive black holes in AGN during the final stage of galaxy mergers. A relation between the precession period of the jet and the fueling rate of the central hole has been obtained.
openaire   +3 more sources

Formation of Asteroid (16) Psyche by a Giant Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni, Benjamin P. Weiss, Namya Baijal, Robert Melikyan, Erik Asphaug, John B. Biersteker, Richard P. Binzel, William F. Bottke, Samuel W. Courville, Linda T. Elkins‐Tanton, David J. Lawrence, José M. G. Merayo, Carol A. Raymond, Mark A. Wieczorek, Maria T. Zuber   +14 more
wiley   +1 more source

The Jets in Radio Galaxies

, 2020
This thesis describes two studies of extragalactic radio sources at high resolution and sensitivity. Most of the well-known facts about radio sources come from low-resolution imaging, despite the fact that much of the interesting physics (that of the jets and hotspots) occurs on scales that are small compared to the overall source size.
openaire   +1 more source

Forecasting SEP Atmospheric and Space Radiation by Coupling UMASEP and NAIRAS Models

Space Weather, Volume 24, Issue 1, January 2026.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts the radiation environment from the Earth's surface to free‐space. The model output provides dosimetric and particle flux quantities required to assess the hazardous radiation impacts to human health and adverse effects on vehicle electronic systems.
Christopher J. Mertens, Guillaume P. Gronoff, Daniel B. Phoenix, Marlon Núñez, Yihua Zheng   +4 more
wiley   +1 more source

Spectral Structure in FR II Radio Galaxies and Jets [PDF]

The Astrophysical Journal, 2001
Using spectral tomography to separate overlapping spectral features in a sample of FRII radio galaxies, we find a variety of spatial/spectral features that are not easily described in the context of current models. In particular, we find mixtures of flat and steep spectrum features in the hot spot regions, and non-monotonic spectral index gradients ...
Treichel, K, Rudnick, L, Hardcastle, MJ, Leahy, JP   +3 more
openaire   +3 more sources

Recalibrating Entrepreneurship Research: Decolonizing and Embracing the Pluralism of Entrepreneurial Activity

Journal of Management Studies, Volume 63, Issue 1, Page 1-21, January 2026.
Abstract Entrepreneurship research has long focused on exceptional, high‐growth, venture‐funded firms while overlooking the everyday and modest ventures that make up most entrepreneurial activity. This Special Issue calls for a recalibration of the field by decolonizing its assumptions and embracing its pluralism.
Robert Nason, Pablo Muñoz, Helen Haugh, Friederike Welter, Gerard George, Shameen Prashantham   +5 more
wiley   +1 more source

Interstellar Migration, the Population ‘Problem’ and the Climate Emergency

Critical Quarterly, EarlyView.
Anna Hartnell
wiley   +1 more source

Early in‐hospital treatment of acute heart failure. Part 2 of the international expert opinion series on AHF management

ESC Heart Failure, Volume 12, Issue 6, Page 3826-3843, December 2025.
This state‐of‐the‐art review outlines a practical, evidence‐based framework for early acute heart failure management to address critical gaps in current guidance and improve early treatment outcomes. Key components include early identification of co‐existing conditions, bedside haemodynamic profiling, a structured diagnostic approach incorporating both
Anika S. Naidu, Andrew P. Ambrosy, Gad Cotter, Edimar A. Bocchi, Javed Butler, Ovidiu Chioncel, Beth Davison, Anastase Dzudie, Yonathan Freund, Marat Fudim, Sivadasanpillai Harikrishnan, Ivna G. Cunha, Alexandre Mebazaa, Robert J. Mentz, Òscar Miró, Siti E. Nauli, Mateo Pagnesi, Naoki Sato, Gianluigi Savarese, Karen Sliwa‐Hahnle, Yuhui Zhang, Jingmin Zhou, Jan Biegus   +22 more
wiley   +1 more source

DISCOVERY OF A PSEUDOBULGE GALAXY LAUNCHING POWERFUL RELATIVISTIC JETS [PDF]

The Astrophysical Journal, 2016
ABSTRACT Supermassive black holes launching plasma jets at close to the speed of light, producing gamma-rays, have ubiquitously been found to be hosted by massive elliptical galaxies. Since elliptical galaxies are generally believed to be built through galaxy mergers, active galactic nuclei (AGN) launching relativistic jets are ...
Jari K. Kotilainen, Jonathan León-Tavares, Alejandro Olguín-Iglesias, Maarten Baes, Christopher Anórve, Vahram Chavushyan, Luis Carrasco   +6 more
openaire   +3 more sources