Results 91 to 100 of about 744 (246)

Hydrodynamic Models of Solar and Stellar Flares [PDF]

International Astronomical Union Colloquium, 1989
AbstractThis paper discusses the hydrodynamic modeling of flaring plasma confined in magnetic loops and its objectives within the broader scope of flare physics. In particular, the Palermo-Harvard model is discussed along with its applications to the detailed fitting of X-ray light curves of solar flares and to the simulation of high-resolution Caxix ...
openaire   +1 more source

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

The Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose, Nicolae Radu, Mugurel Constantin Rusu   +2 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

Effects of Ultraviolet Radiation on Sub-Neptune Exoplanet Hazes through Laboratory Experiments

The Planetary Science Journal
Temperate sub-Neptune exoplanets could contain large inventories of water in various phases, such as water worlds with water-rich atmospheres or even oceans.
Lori Huseby, Sarah E. Moran, Neil Pearson, Tiffany Kataria, Chao He, Cara Pesciotta, Sarah M. Hörst, Pierre Haenecour, Travis Barman, Vishnu Reddy, Nikole K. Lewis, Véronique Vuitton   +11 more
doaj   +1 more source

Stellar Flares: Observations and Theory [PDF]

International Astronomical Union Colloquium, 1989
AbstractPhotometric and spectroscopic observations of a very large flare on AD Leo are presented. A self consistent model of a flare corona, transition region and chromosphere is developed; in particular the chromospheric temperature distributions resulting from X-ray and EUV irradiation by coronae of various temperatures are determined.
openaire   +1 more source

American College of Rheumatology Guidance Statement for Diagnosis and Management of VEXAS Developed by the International VEXAS Working Group Expert Panel

Arthritis &Rheumatology, EarlyView.
Objective Vacuoles E1 enzyme X‐linked autoinflammatory somatic syndrome (VEXAS) is a recently identified rare genetic disorder associated with somatic mutations in the UBA1 gene. VEXAS presents with a combination of inflammatory and hematologic manifestations, leading to increased morbidity and mortality.
Arsene Mekinian, Sophie Georgin‐Lavialle, Marcela A. Ferrada, Sinisa Savic, Matthew J. Koster, Olivier Kosmider, Thibault Comont, Mael Heiblig, Juan I. Arostegui, Annmarie Bosco, Rim Bourguiba, Katherine R. Calvo, Catherine Cargo, Chiara Cattaneo, François Chasset, Henrique Coelho, Corrado Campochiaro, Francesca Crisafulli, Stephanie Ducharme‐Benard, Raquel Faria, Franco Franceschini, Micol Frassi, Emma M. Groarke, Carmelo Gurnari, Yervand Hakobyan, Yvan Jamilloux, Ciprian Jurcut, Yohei Kirino, Austin Kulasekararaj, Hiroyoshi Kunimoto, Lauren M. Madigan, Heřman F. Mann, Chiara Marvisi, Marcin Milchert, Sara Morais, Katja Sockel, Francesco Muratore, Hideaki Nakajima, Mrinal M. Patnaik, Luísa Regadas, Marie Robin, Abraham Rutgers, Carlo Salvarani, Anthony M. Sammel, Joerg Seebach, Pierre Sujobert, Alessandro Tomelleri, Geoffrey Urbanski, Frédéric Vandergheynst, Romana Vieira, David S. Viswanatha, Ewa Więsik‐Szewczyk, Elisa Diral, Benjamin Terrier, Bhavisha A. Patel, Pierre Fenaux, Peter C. Grayson, David B. Beck, on behalf of the International VEXAS working group, and with endorsement of EuroBloodNet, the European Reference Network in Rare Hematological Diseases, Heřman Mann, Benjamin Terrier, François Chasset, Sophie Georgin Lavialle, Alessandro Tomelleri, Campochiaro Corrado, Carlo Salvarani, Francesca Crisafulli, Franco Franceschini, Micol Frassi, Yohei Kirino, Ewa Więsik‐Szewczyk, Marcin Milchert, Raquel Faria, Ciprian Jurcut, Joerg Seebach, Sinisa Savic, David Beck, Lauren Madigan, Matthew Koster, Patnaik Mrinal, Olivier Kosmider, Pierre Sujobert, Juan I. Arostegui, Catherine Cargo, David Viswanatha, Yervand Hagopian, Mael Heilblig, Pierre Fenaux, Thibault Comont, Bruno Alessandro, Chiara Cattaneo, Elisa Diral, Sara Morais, Austin Kulasekarara, Emma Groarke, Katherine Calvo, Patel Bhavisha, Anthony Sammel, Arsene Mekinian, Benjamin Terrier, Marie Robin, Sophie Georgin Lavialle, Katja Sockel, Yvan Jamilloux, Carmelo Gurnari, Henrique Coelho, Romana Vieira, Rim Bourguiba, Marcela Ferrada, Peter Grayson   +111 more
wiley   +1 more source

High-time-cadence Spectroscopy and Photometry of Stellar Flares on M-dwarf YZ Canis Minoris with Seimei Telescope and TESS. II. Statistical Properties of Blue/Red Asymmetries in the Hα Line

The Astrophysical Journal
M-dwarfs frequently produce flares, and their associated coronal mass ejections (CMEs) may threaten the habitability of close-in exoplanets. M-dwarf flares sometimes show prominence eruption signatures, observed as blue/red asymmetries in the H α line ...
Yuto Kajikiya, Kosuke Namekata, Yuta Notsu, Kai Ikuta, Hiroyuki Maehara, Bunei Sato, Daisaku Nogami   +6 more
doaj   +1 more source

Stellar magnetic field manifestations: flares

, 2023
Understanding stellar magnetic fields is crucial to understanding the structure and evolution of stars. Stellar magnetic fields manifest in many different ways, on many different time scales. In this talk discuss one manifestations of magnetic fields on cool stars: stellar flares.
openaire   +1 more source

Case‐Based Immunology: B Cells and Systemic Sclerosis Interstitial Lung Disease

Arthritis &Rheumatology, EarlyView.
Interstitial lung disease (ILD) is an important complication of systemic sclerosis (SSc), with high mortality and morbidity. Recent clinical studies in SSc‐ILD have led to US Food and Drug Administration–approved therapies in SSc‐ILD. Importantly, evidence from these studies has been extrapolated to guide management of ILDs of other systemic autoimmune
Nina Goldman, Voon Ong, Christopher P. Denton   +2 more
wiley   +1 more source

Magnetic Activity of TESS Objects Observed in the LAMOST Medium-resolution Spectral Survey

The Astrophysical Journal Supplement Series
A combination of spectroscopic and photometric observations provides an excellent data sample for studying stellar chromospheric activity. We have combined LAMOST medium-resolution spectra with TESS 2 minute light curves and extracted over 530,000 ...
Tianhao Su, Li-yun Zhang, Prabhakar Misra, Xianming L. Han, Yinpeng Wang, Wenjie Li, Zhongzhong Zhu, Qingfeng Pi, Hongpeng Lu   +8 more
doaj   +1 more source