Results 51 to 60 of about 2,140 (245)

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

Astronomische Nachrichten, EarlyView.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth, Paško Roje, Stella Vješnica, Stefan Cikota, Alex J. Brown, Mike Kretlow, Marco Azzaro, Santiago Reinhart, Jesús Aceituno, Harry Dawson, Carsten Denker, Torsten Enßlin, Stephan Geier, Thomas Granzer, Thomas Kupfer, Gianluca Li Causi, Samaya Nissanke, José Luis Ortiz, Fernando Pedichini, Katja Poppenhäger, Axel Schwope   +20 more
wiley   +1 more source

EFTE-SOAR: Two Giant M Dwarf Flares with Rapid Spectroscopic Follow-up

The Astronomical Journal
We present time-series optical spectroscopy of two stellar flares with complex multi-peaked light curves: a $2.{1}_{-.3}^{+.4}\times 1{0}^{34}$ erg flare from an M8 ultra-cool dwarf, and a $1.{5}_{-.2}^{+.2}\times 1{0}^{35}$ erg superflare from an M4 ...
Hank Corbett, Nathan Galliher, Amy Glazier, Ramses Gonzalez Chavez, Nicholas M. Law, Ward S. Howard, Alan Vasquez Soto, Jeffrey K. Ratzloff, Robert Quimby   +8 more
doaj   +1 more source

Revisiting Variable Stars Toward the Globular Cluster NGC 6496 With ATLAS and Gaia Photometry

Astronomische Nachrichten, EarlyView.
ABSTRACT We revisit 13 variable stars in the field of the metal‐rich globular cluster NGC 6496, discovered by Abbas et al. (2015; Astronomical Journal 149:40) (hereafter referred to as “MA15”) via time‐series data, spanning 2 years. We improve upon the MA15 characterization of the variables using ATLAS time‐series photometry data, spanning 8 years, in ...
Madison E. Martin, Andrew Layden, Andrew McNeill   +2 more
wiley   +1 more source

Adaptive Detection of Fast-moving Celestial Objects Using a Mixture-of-experts and Physical-inspired Neural Network

The Astronomical Journal
Fast-moving celestial objects are characterized by velocities across the celestial sphere that significantly differ from the motions of background stars.
Peng Jia, Ge Li, Bafeng Cheng, Yushan Li, Rongyu Sun   +4 more
doaj   +1 more source

Offline assembly of the lobster-eye x-ray telescope based on optical reference transfer [PDF]

AIP Advances
To address the difficulty of focal alignment and optical axis calibration of lobster-eye x-ray telescopes in the absence of an x-ray vacuum environment, an offline visible-light alignment method based on optical reference transfer under atmospheric ...
Yifan Chen, Zhengda Li, Chengbin Wang, Chen Zhang, Zhixing Ling, Xiaohao Ma, Yixiao Han, Yanfeng Dai, Huaqing Cheng, Yujun Tang, Yulong Xue, Zhiwei Cheng, Wei Fu, Xiaojin Sun   +13 more
doaj   +1 more source

Listening to Hong Kong children's perspectives through pretend play

British Educational Research Journal, EarlyView.
Abstract Quality in early childhood education and care (ECEC) has become an increasing concern in recent years. The issue has been regularly discussed by different stakeholders. However, the rising concern regarding quality in ECEC has not seriously taken into account children's perspectives.
Suzannie K. Y. Leung
wiley   +1 more source

Modular One‐Pot Access to π‐Expanded Tetrakis(Phenothiazinyl)‐Silanes With Broadly Tunable Redox and Emission Properties

Chemistry – A European Journal, EarlyView.
A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Thomas P. M. Merke, Lysander Presser, Leonard Karl, Christian Ganter, Thomas J. J. Müller   +4 more
wiley   +1 more source

Self‐Reported Versus Objectively Logged Social Media Use: Implications for Measurement in Eating Disorder Research

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Self‐reported frequency measures of social media use (e.g., “How often do you use social media?”) are convenient, yet their criterion validity against objective behavioral data remains largely untested in eating disorder research. We compared self‐reports of TikTok use with objective data extracted from TikTok datafiles.
Scott Griffiths, Emma Halliwell, Harish Kannan, Ben Stone, Wesley Grey, Noa Brittain, Eden Shaveet, Emily Harris   +7 more
wiley   +1 more source

Transendocardial injection of expanded autologous CD34+ cells after myocardial infarction: Design of the EXCELLENT trial

ESC Heart Failure, Volume 12, Issue 2, Page 1455-1463, April 2025.
Abstract Aims The extent of irreversible cardiomyocyte necrosis after acute myocardial infarction (AMI) is a major determinant of residual left ventricular (LV) function and clinical outcome. Cell therapy based on CD34+ cells has emerged as an option to help repair the myocardium and to improve outcomes.
Jerome Roncalli, François Roubille, Nicolas Meyer, Giulio Pompilio, Lionel Leroux, Philippe Henon, Guillaume Trebuchet, Anthony Criquet, Matthieu de Kalbermatten, Eric Saloux, Alain Manrique, Pierre‐Yves Marie, Deepak L. Bhatt, Scott D. Solomon, Gilles Montalescot, David E. Newby, Faiez Zannad, on behalf of the EXCELLENT Trial Investigators   +17 more
wiley   +1 more source

Understanding pulsar magnetospheres with the SKAO

The Open Journal of Astrophysics
The SKA telescopes will bring unparalleled sensitivity across a broad radio band, a wide field of view across the Southern sky, and the capacity for sub-arraying, all of which make it the ideal instrument for studying the pulsar magnetosphere. This paper
Lucy S Oswald, Avishek Basu, Manoneeta Chakraborty, Bhal Chandra Joshi, Natalia Lewandowska, Kuo Liu, Marcus Lower, Alexander Phillipov, Xiaoxi Song, Pratik Tarafdar, Joeri van Leeuwen, Anna Watts, Patrick Weltevrede, Geoff Wright, Jan Benacek, Aru Beri, Shunshun Cao, Paolo Esposito, Fabian Jankowski, Jinchen Jiang, Aris Karastergiou, Kejia Lee, Nanda Rea, Dany Vohl, SKA Pulsar Science Working Group   +24 more
doaj   +1 more source