Results 21 to 30 of about 1,371 (185)

Magnetic Tornado Properties: A Substantial Contribution to the Solar Coronal Heating via Efficient Energy Transfer

The Astrophysical Journal, 2023
In solving the solar coronal heating problem, it is crucial to comprehend the mechanisms by which energy is conveyed from the photosphere to the corona. Recently, magnetic tornadoes, characterized as coherent, rotating magnetic-field structures extending
Hidetaka Kuniyoshi, Munehito Shoda, Haruhisa Iijima, Takaaki Yokoyama   +3 more
doaj   +1 more source

Global solar photospheric and coronal magnetic field over activity cycles 21–25

Journal of Space Weather and Space Climate
The evolution of the global solar magnetic field from the beginning of cycle 21 (mid-1970s) until the currently-ascending cycle 25 is described using photospheric full-disk and synoptic magnetograms from NSO Kitt Peak Vacuum Telescope (KPVT) 512-channel ...
Petrie Gordon J. D.
doaj   +1 more source

Probing oscillations in the lower solar atmosphere with the FRANCIS integral field unit

Frontiers in Astronomy and Space Sciences
The photosphere is dominated by 3 mHz oscillations, and as we move upward through the solar atmosphere, the dominant frequency is progressively filtered up to 5 mHz, which is commonly observed ubiquitously in the chromosphere. However, the interaction of
S. D. T. Grant, M. Berretti, M. Berretti, G. Chambers, D. B. Jess, D. B. Jess, M. Stangalini, S. Jafarzadeh, H. N. Smitha, F. Berrilli   +9 more
doaj   +1 more source

Integrating virtual reality experiences with preservice and inservice science teachers

School Science and Mathematics, EarlyView.
Abstract VR environments offer opportunities for novel science learning experiences. This article discusses how we integrated virtual reality experiences with preservice and inservice science teachers. We explore the affordances of VR for enhancing science education and its potential applications in secondary level classrooms. Specifically, we describe
Alec Bodzin, Robson Araujo‐Junior, Jiayan Zhu   +2 more
wiley   +1 more source

The UK Met Office’s Coronal Mass Ejection (CME) Ensemble Prediction System

Space Weather, Volume 24, Issue 7, July 2026.
Abstract We describe the 24‐member Coronal Mass Ejection (CME) ensemble prediction system that is used operationally at the UK's Met Office Space Weather Operations Center (MOSWOC) to forecast the arrival time of CMEs at Earth. The ensemble system was built on ad‐hoc assumptions and there is the need to investigate whether the technique can be improved
Siegfried Gonzi, D. R. Jackson, F.‐X. Bocquet, V. J. Pizzo, E. Adamson, G. Millward, A. R. Marble, D. Odstrcil, C. N. Arge   +8 more
wiley   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1593-1609, July 2026.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

DIFFERENT MODES OF TURBULENCE IN THE ACTIVE REGIONS OF THE SOLAR PHOTOSPHERE

Odessa Astronomical Publications, 2013
In work the range of different methods for the analysis of characteristics of turbulent processes in the active regions of the solar photosphere has been used.
L. V. Kozak, R. I. Kostyk, O. K. Cheremnykh   +2 more
doaj   +1 more source

Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón, Ondřej Pejcha, Brian D. Metzger, Paul C. Duffell, Stephan Rosswog   +4 more
wiley   +1 more source

Long-Term Variations in Background Bias and Magnetic Field Noise in HSOS/SMFT Observations

Universe
The Solar Magnetic Field Telescope (SMFT) at Huairou Solar Observing Station (HSOS) has conducted continuous observations of solar vector magnetic fields for nearly four decades, and while the primary optical system remains unchanged, critical components—
Haiqing Xu, Hongqi Zhang, Suo Liu, Jiangtao Su, Yuanyong Deng, Shangbin Yang, Mei Zhang, Jiaben Lin   +7 more
doaj   +1 more source

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

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
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