Results 131 to 140 of about 22,322 (295)

Sub-second cadence structure of optical flares on AD Leo

Astronomy & Astrophysics
Context. Stellar flares are sudden brightenings caused by magnetic reconnection and are frequently observed on late-type stars. High-cadence photometry of flares provides valuable insights into the mechanisms of these events, yet such observations remain
Schmercz B., Seli B., Vida K., Kriskovics L., Görgei A., Oláh K., Regály Zs.   +6 more
doaj   +1 more source

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Pharmacokinetics, safety, tolerability and fluorescence imaging of nizaracianine triflutate administered in three divided doses to healthy volunteers

British Journal of Clinical Pharmacology, EarlyView.
Aim Fluorescence‐guided surgery enhances intraoperative visualization of anatomical structures. Nizaracianine is a near‐infrared fluorescent agent that is exclusively renally cleared in animal models. It enables real‐time ureteral imaging and identification, potentially reduces risk of injury and facilitates assessment before surgical closure.
Lisanne K. A. Neijenhuis, Cedric M. W. Pesch, John V. Frangioni, Alexander L. Vahrmeijer, Jacobus Burggraaf, Naomi B. Klarenbeek   +5 more
wiley   +1 more source

Starspot Distribution and Flare Events in Two Young Low-mass Stars Using TESS Data

The Astrophysical Journal
Wide-field high-precision photometric observations such as the Transiting Exoplanet Survey Satellite (TESS) allowed the investigation of the stellar magnetic activity of cool stars. M dwarf starspots and stellar flares are the main indicators of magnetic
Rajib Kumbhakar, Soumen Mondal, Samrat Ghosh, Diya Ram   +3 more
doaj   +1 more source

The decline of 6‐thioguanine nucleotides is not linked to impaired efficacy or safety of thiopurines in pregnant women with inflammatory bowel disease

British Journal of Clinical Pharmacology, EarlyView.
Background Thiopurines are used to maintain remission in inflammatory bowel disease (IBD). These drugs are metabolized into 6‐thioguanine nucleotides (6‐TGN), associated with efficacy, and 6‐methylmercaptopurine ribonucleotides (6‐MMPR), associated with adverse drug reactions. Pregnancy has been linked to a shift in thiopurine metabolism, characterized
Dianne G. Bouwknegt, Paola Mian, Femke Groen, Denise van den Berg‐Zuiddam, Andrea E. van der Meulen, Femke Crouwel, Nanne K. de Boer, Debbie S. Deben, Dennis R. Wong, Luc J. J. Derijks, Gerard Dijkstra, Arno R. Bourgonje, C. Janneke van der Woude, Marijn C. Visschedijk   +13 more
wiley   +1 more source

Interpreting nebular emission lines in the high-redshift Universe

The Open Journal of Astrophysics
One of the most remarkable outcomes from \textit{JWST} has been the exquisite UV-optical spectroscopic data for galaxies in the high-redshift Universe ($z \geq 5$), enabling the use of various nebular emission lines to infer conditions of the ...
Aswin Payyoor Vijayan, Robert M. Yates, Christopher C Lovell, WIlliam J Roper, Stephen M Wilkins, Hiddo S B Algera, Shihong Liao, Paurush Punyasheel, Lucie E Rowland, Louise T C Seeyave   +9 more
doaj   +1 more source

‘Where are the adults?’: Troubling child‐activism and children's political participation

British Educational Research Journal, EarlyView.
Abstract Children's political participation is a well‐established theme in childhood studies. In this article we offer an original account of child activism that takes into account the entangled and emergent aspect of children as activists. We begin with a historical and a conceptual review, noting the importance of mid‐20th century developments such ...
Sharon Hunter, Claire Cassidy
wiley   +1 more source

Stellar flare detection in XMM-Newton with gradient-boosted trees

Astronomy & Astrophysics
Context. The EXTraS project, based on data collected with the XMM-Newton observatory, provides us with a vast amount of light curves for X-ray sources. For each light curve, EXTraS also provides us with a set of features.
Pasquato Mario, Marelli Martino, De Luca Andrea, Salvaterra Ruben, Carenini Gaia, Belfiore Andrea, Tiengo Andrea, Esposito Paolo   +7 more
doaj   +1 more source

Revisiting the Ethics of Urate‐Lowering Therapy Clinical Trials for Gout Management

Arthritis &Rheumatology, EarlyView.
Lisa K. Stamp, Dien Ho, Nicola Dalbeth
wiley   +1 more source