Results 91 to 100 of about 74,488 (217)

The physics of galactic winds driven by active galactic nuclei

, 2012
Active galactic nuclei (AGN) drive fast winds in the interstellar medium of their host galaxies. It is commonly assumed that the high ambient densities and intense radiation fields in galactic nuclei imply short cooling times, thus making the outflows ...
Abbott, Alexander, Baum, Bautista, Beck, Berger, Bland-Hawthorn, Blandford, Blandford, Booth, Braito, Chang, Chartas, Cioffi, Ciotti, Ciotti, Claude-André Faucher-Giguère, Creasey, Dai, DeBuhr, DeBuhr, Di Matteo, Dobler, Downes, Dunn, Durier, Eliot Quataert, Emmering, Falle, Ferrarese, Feruglio, Fischer, France, Fu, Gallimore, Gebhardt, Ghavamian, Gibson, Greene, Greene, Gültekin, Hainline, Hopkins, Hopkins, Hutchings, Kay, King, King, King, King, Konigl, Koo, Koo, Lacki, Lacki, Lacki, Levin, Markevitch, McKee, Mihos, Moe, Murray, Murray, Narayan, Ostriker, Paumard, Pounds, Pounds, Proga, Rees, Riquelme, Risaliti, Rupke, Saitoh, Sanders, Sazonov, Sazonov, Sazonov, Schwartz, Scoville, Sijacki, Silk, Silk, Spitzer, Springel, Sturm, Su, Thompson, Thompson, Tombesi, Treister, Tremaine, Tremonti, Tripp, Turnshek, Ulvestad, Veilleux, Weaver, Weymann, Weymann, Wyithe   +100 more
core   +1 more source

Deletion of a Pax1 Sex‐Associated Genomic Region Associated With Adolescent Idiopathic Scoliosis Leads to Disc Degeneration, Instability, and Vertebral Rotation in Mice

JOR SPINE, Volume 9, Issue 2, June 2026.
Overview of the effects of Pax1‐SAR deletion on gene expression, IVD degeneration, and resultant scoliotic‐like curvature between sexes. Proposed mechanism of sex‐dependent changes in gene expression in females (right) and males (left), resulting in sex‐dependent disc degeneration and scoliotic phenotypes.
Edward C. Moody, Emma M. Wade, Shuji Mizumoto, Jeremy McCallum‐Loudeac, Megan J. Wilson   +4 more
wiley   +1 more source

Active Galactic Nuclei

, 2013
This final chapter introduces a classical example of sources emitting high energy radiation. A strong effort has been made to introduce these sources at a basic level: no pre-knowledge is required. They are one of the best fields of research where we can use what studied in all the previous chapters: we will apply the just learnt theory to the most ...
  +4 more sources

The Changing-look Phenomenon Accompanied by an Accretion Mode Transition in NGC 3786

The Astrophysical Journal
To reveal the physical origin of the changing-look (CL) phenomenon in NGC 3786, which transitioned from type 1.8/1.9 to type 1, we present an analysis of long-term spectral monitoring in the optical and near-infrared obtained with Gemini/GMOS-N and ...
Suyeon Son, Minjin Kim, Luis C. Ho, Dohyeong Kim, Taehyun Kim   +4 more
doaj   +1 more source

Fluid‐Driven Cohesive Strengthening: Critical Role of Reaction Kinetics as the Determinant for Frictional Stability

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract Following an earthquake, faults lock and regain strength via a combination of healing mechanisms that include pressure solution, contact growth, and cementation. Fault healing dictates strength recovery during the seismic cycle and is therefore a key factor controlling earthquake recurrence intervals, stress drop, and other source properties ...
R. Affinito, G. Volpe, L. Calzolari, T. Mittal, G. Pozzi, C. Marone   +5 more
wiley   +1 more source

The Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: The Fourth Data Release

The Astrophysical Journal Supplement Series
We present the active galactic nuclei (AGN) catalog from the fourth data release (HDR4) of the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). HETDEX is an untargeted spectroscopic survey.
Chenxu Liu, Karl Gebhardt, Erin Mentuch Cooper, Dustin Davis, Donald P. Schneider, Matt J. Jarvis, Daniel J. Farrow, Steven L. Finkelstein, Óscar A. Chávez Ortiz, The HETDEX Collaboration   +9 more
doaj   +1 more source

Controlling 3D Contractility via Engineered Fibrous Hydrogel Composites

Advanced Functional Materials, Volume 36, Issue 36, 4 May 2026.
A tunable composite contractile assembly (CCA) is developed that can permit or resist contraction without changing cell‐adhesion and density, unlike collagen whose inherent coupling of these ECM cues limits its use as a platform in contractility studies.
Karen L. Xu, Yuqi Zhang, Alysse DeFoe, Georgios Kotsaris, Brendan Stoeckl, Matthew D. Davidson, Jason A. Burdick, Robert L. Mauck   +7 more
wiley   +1 more source

Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS

The Canadian Journal of Chemical Engineering, Volume 104, Issue 5, Page 2206-2224, May 2026.
Abstract Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and ...
Emily Cintia Tossi de A. Costa, Jildimara de Jesus Santana, Viviane de Oliveira Campos, Felipe Fernandes Barbosa, Gregory S. Patience   +4 more
wiley   +1 more source

New Insight from the James Webb Space Telescope on Variable Active Galactic Nuclei

The Astrophysical Journal
Variability detected in galaxies is usually attributed to their active galactic nuclei (AGNs). While all AGNs are intrinsically variable, the AGN unification model predicts that Type 2 AGNs rarely vary because their engines are blocked by dust tori ...
Bangzheng Sun, Haojing Yan, Wei Leong Tee, Feige Wang   +3 more
doaj   +1 more source

Seafloor Sediments, Morphologic Features, and Geotechnical Properties of Harrison Bay in the Alaskan Beaufort Sea

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Sediments on Arctic continental shelves are impacted by sea ice and ice‐related processes for up to 9 months per year. As a result, seabed morphology in cold regions can exhibit features such as ice scours which are absent on lower‐latitude shelves.
E. F. Eidam, N. Stark, J. H. Nienhuis, D. Duncan, N. Brilli, N. Kallioras, R. Smith, A. D. J. Heath   +7 more
wiley   +1 more source