Results 101 to 110 of about 2,328,776 (249)

Rising Near-ultraviolet Spectra in Stellar Megaflares

open access: yesThe Astrophysical Journal
Flares from M dwarf stars can attain energies up to 10 ^4 times larger than solar flares but are generally thought to result from similar processes of magnetic energy release and particle acceleration.
Adam F. Kowalski   +7 more
doaj   +1 more source

Activities in Sunspot Group NOAA 9393 [PDF]

open access: yes, 2008
Watukosek Aeronautics and Space Observing Site (WKSO, LAPAN), observed sunspot in daily basis since 1987 using a sketch method. Sunspot group NOAA 9393 (or WKSO 0123) have been observed in March to early of April 2001.
Bambang, Setiahadi, Bachtiar, Anwar
core  

Training on the quadriceps of individuals with rheumatoid arthritis: A systematic review and meta‐analysis

open access: yesRheumatology &Autoimmunity, EarlyView.
Physical training significantly improves quadriceps strength in patients with rheumatoid arthritis. No serious adverse events were reported. Abstract Background Rheumatoid arthritis is a chronic, systemic disease in which patients can benefit from physical exercise.
Mariana Laís Boaretto   +6 more
wiley   +1 more source

World Models for Robotic Manipulation: A Survey

open access: yesSmartBot, EarlyView.
World models enable robots to anticipate how candidate actions may alter object configurations, contact states, and scene geometry before physical execution. This survey examines world models for robotic manipulation as action‐conditioned predictive systems and organizes the literature according to predicted representations, interfaces between ...
Fangyuan Wang   +17 more
wiley   +1 more source

A Statistical Study of Soft X-Ray Flares on Solar-type Stars

open access: yesThe Astrophysical Journal
The statistical characteristics of stellar flares at optical bands have received extensive study, but they remain to be studied at soft X-ray bands, in particular for solar-type stars.
Z. H. Zhao   +4 more
doaj   +1 more source

Beam electrons as a source of Hα flare ribbons

open access: yesNature Communications, 2017
The dynamic of plasma heating in solar flares can be effectively derived from observations of optical hydrogen H-α line emissions. Here the authors report the observation of a C1.5 class flare that produced two H-α ribbons, interpreted combining ...
Malcolm Druett   +5 more
doaj   +1 more source

Scalable Room‐Temperature Terahertz Graphene Cameras

open access: yesSmall Methods, EarlyView.
ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi   +2 more
wiley   +1 more source

Linguistic Patterns and Antipatterns Detection and Their Impact on Understandability and Readability of APIs

open access: yesSoftware: Practice and Experience, EarlyView.
ABSTRACT Background Application programming interfaces (APIs) help distributed systems and microservices to expose their functionalities and serve as a means for communication among them. Understandability and readability of APIs are important for effectively comprehending and using APIs.
Krishno Dey   +3 more
wiley   +1 more source

The Unluckiest Star: A Spectroscopically Confirmed Repeated Partial Tidal Disruption Event AT 2022dbl

open access: yesThe Astrophysical Journal Letters
The unluckiest star orbits a supermassive black hole elliptically. Every time it reaches the pericenter, it shallowly enters the tidal radius and gets partially tidally disrupted, producing a series of flares.
Zheyu Lin   +15 more
doaj   +1 more source

A Multiwavelength Survey of Nearby M dwarfs: Optical and Near-Ultraviolet Flares and Activity with Contemporaneous TESS, Kepler/K2, \textit{Swift}, and HST Observations [PDF]

open access: yes
We present a comprehensive multiwavelength investigation into flares and activity in nearby M~dwarf stars. We leverage the most extensive contemporaneous dataset obtained through the Transiting Exoplanet Sky Survey (TESS), Kepler/K2, the Neil Gehrels ...
Barclay, Thomas   +16 more
core  

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