Solar Cycle Variability in Coronal Holes and Their Effects on Solar Wind Sources by J. G. Luhmann, Yan Li, C. O. Lee, L. K. Jian, C. N. Arge, P. Riley

“…These measurements provide a long term picture of the related patterns in large scale incident plasma and magnetic field parameters of interest for both interpreting cycles in geospace effects, and understanding how the Sun controls our space environment. …”
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Investigation of Ionospheric Small‐Scale Plasma Structures Associated With Particle Precipitation by F. Enengl, L. Spogli, D. Kotova, Y. Jin, K. Oksavik, N. Partamies, W. J. Miloch

“…Plasma structuring down to scales of hundreds of meters is seen when strong gradients in auroral emissions at 557.7 nm cross the line of sight between the GNSS satellite and receiver. Local magnetic field measurements confirm small‐scale structuring processes coinciding with intensification of ionospheric currents. …”
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A Superposed Epoch Analysis of Auroral Oval Coverage During Substorms Using Deep Learning‐Based Segmentation Models by Jia‐Nan Jiang, Zi‐Ming Zou, Yang Lu, Jia Zhong, Yong Wang, Yu‐Zhang Ma, Bian‐Long Zhao

“…It is also revealed that the evolution pattern of auroral coverage depends on interplanetary magnetic field orientations and seasonal conditions. The results quantify the variation of auroral morphology in terms of coverage, which complete the evolution pattern of aurora during substorms and provide a more comprehensive understanding of substorms.…”
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An Empirical Model of the Occurrence Rate of Low Latitude Post‐Sunset Plasma Irregularities Derived From CHAMP and Swarm Magnetic Observations by C. Stolle, T. A. Siddiqui, L. Schreiter, S. K. Das, I. Rusch, M. Rother, E. Doornbos

“…In this study, we introduce the Ionospheric Bubble Probability (IBP) model, an empirical model to predict the occurrence probability of EPDs derived from 9 years of CHAMP and 9 years of Swarm magnetic field measurements. The model predicts the occurrence probability of EPDs for a given longitude, day of year, local time and solar activity, for the altitude range of about 350–510 km, and low geographic latitudes of ±45°. …”
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Moiré band structure engineering using a twisted boron nitride substrate by Xirui Wang, Cheng Xu, Samuel Aronson, Daniel Bennett, Nisarga Paul, Philip J. D. Crowley, Clément Collignon, Kenji Watanabe, Takashi Taniguchi, Raymond Ashoori, Efthimios Kaxiras, Yang Zhang, Pablo Jarillo-Herrero, Kenji Yasuda

“…The resulting modulation of the band structure appears as superlattice resistance peaks, tunable by varying the twist angle, and Hofstadter butterfly physics under a magnetic field. Additionally, we demonstrate the tunability of the moiré potential by altering the dielectric thickness underneath the twisted BN. …”
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Magnetic Induction Phase Difference for Cerebral Hemorrhage Detection by Jie Liu, Lian Yan, Huangsen Deng, Mingxin Qin, Mingsheng Chen

“…The uniform primary magnetic field and its counteraction were achieved. Phase-change responses to solutions of varying conductivities and rabbits with cerebral hemorrhage were investigated and compared with traditional sensors. …”
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Influence of Solar Wind High‐Speed Streams on the Brazilian Low‐Latitude Ionosphere During the Descending Phase of Solar Cycle 24 by S. P. Moraes‐Santos, C. M. N. Cândido, F. Becker‐Guedes, B. Nava, V. Klausner, C. Borries, F. S. Chingarandi, T. O. Osanyin

“…We discuss the Prompt Penetration Electric Fields and Disturbance Dynamo Electric Fields following the magnetic reconnection between Earth's and interplanetary magnetic field, using observational data and modeling. …”
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Angular Power Spectrum of TeV–PeV Cosmic-Ray Anisotropies by Wenyi Bian, Gwenael Giacinti, Brian Reville

“…Moreover, we calculate all coefficients of the spherical harmonics and compute the component of the angular power spectrum projected onto the direction of the local magnetic field line. We find that deviations from gyrotropy become increasingly important at higher CR energies and larger values of ℓ .…”
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Calculation of GIC in the North Island of New Zealand Using MT Data and Thin‐Sheet Modeling by K. Mukhtar, M. Ingham, C. J. Rodger, D. H. Mac Manus, T. Divett, W. Heise, E. Bertrand, M. Dalzell, T. Petersen

“…MT data in the period range 2–30 min are used to predict GIC associated with the sudden storm commencement and rapid variations in the magnetic field. In contrast, the thin‐sheet modeling approach shows that GIC may be expected to occur in conjunction with longer‐period variations. …”
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A new continuous optimization method of standardized cubic permanent magnets for stellarators by Xiangyu Zhang, Dehong Chen, Guosheng Xu, Zhiyuan Lu, Caoxiang Zhu, Liang Chen, Minyou Ye, Baonian Wan

“…The results demonstrate that the designed distribution of cubic permanent magnets can accurately reproduce the intended magnetic field configuration.…”
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Artificial neural network model using Levenberg Marquardt algorithm to analyse transient flow and thermal characteristics of micropolar nanofluid in a microchannel by Pradeep Kumar, Felicita Almeida, Ajaykumar AR, Qasem Al-Mdallal

“…The model constructed analyses the mixed convective and unsteady flow of micropolar fluid through the microchannel in the presence of activation energy and magnetic field using Buongiorno's model. No slip and convective boundary conditions are employed. …”
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Fluctuations Driven by Multicomponent Pickup Ion Distributions in the Outer Heliosheath by Ameneh Mousavi, Vadim Roytershteyn, Federico Fraternale, Nikolai Pogorelov

“…Two-dimensional (2D) simulation results show that when all unstable waves are present, the predominant contributor to the fluctuating magnetic field energy is the AC mode. The AC waves quickly scatter the PUIs with pitch angles away from 90 ^∘ toward isotropy, while the PUIs near 90 ^∘ pitch angle maintain a degree of anisotropy within our simulation timeframe. …”
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Large magnetocaloric effect in free-standing Gd2O3 nanostructures near liquid helium boiling point by S Hazarika, D Mohanta, A V Morozkin, R Nirmala

“…While the maximum isothermal magnetic entropy change (ΔS _m ) value at 6 K is about −22.6 Jkg ^−1 K ^−1 for the Gd _2 O _3 nanorods and −17.8 Jkg ^−1 K ^−1 for Gd _2 O _3 nanoparticles for a magnetic field change of 70 kOe, the mixed Gd _2 O _3 nanosheets and nanorods system prepared by wet chemical method shows a maximum ΔS _m value of −23.6 Jkg ^−1 K ^−1 for the same field change. …”
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Electrical mutual switching in a noncollinear-antiferromagnetic–ferromagnetic heterostructure by Ju-Young Yoon, Yutaro Takeuchi, Ryota Takechi, Jiahao Han, Tomohiro Uchimura, Yuta Yamane, Shun Kanai, Jun’ichi Ieda, Hideo Ohno, Shunsuke Fukami

“…Using a noncollinear-antiferromagnetic/nonmagnetic/ferromagnetic Mn3Sn/Mo/CoFeB heterostructure at zero magnetic field, we show current-induced switching in the CoFeB layer due to the spin current polarized by the magnetic structure of the Mn3Sn; by properly tuning the driving current, the spin current from the CoFeB further reverses the magnetic orientation of the Mn3Sn, which determines the polarity of the subsequent switching of the CoFeB. …”
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Exploring the Complex Heliotail Boundary by an Extended Level Set Approach by C. Onubogu, M. Opher, M. Kornbleuth, G. Tóth, V. Florinski

“…This region also contains magnetic field lines with at least one end anchored to the Sun. …”
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Long-term Evolution of Sco X-1: Implications for the Current Spin Frequency and Ellipticity of the Neutron Star by Abhijnan Kar, Pulkit Ojha, Sudip Bhattacharyya

“…Here, we compute the long-term evolution of its parameters, particularly the NS spin frequency ( ν ) and the surface magnetic field ( B ), to probe its nature and its potential for CW detection. …”
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Assessing the Effects of a Minor CIR‐HSS Geomagnetic Storm on the Brazilian Low‐Latitude Ionosphere: Ground and Space‐Based Observations by F. S. Chingarandi, C. M. N. Candido, F. Becker‐Guedes, O. F. Jonah, S. P. Moraes‐Santos, V. Klausner, O. O. Taiwo

“…Fluctuations in the interplanetary magnetic field Bz and changes in the thermospheric column density ratio (∑O/N2) are discussed as the main sources of ionospheric changes during the storm. …”
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Transport and profile broadening in the private flux region of ASDEX upgrade and role for power exhaust by D. Brida, G. Grenfell, O. Grover, D. Silvagni, M. Faitsch, U. Stroth, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team

“…According to the model, the ion PFR width increases with the distance Δ R between the outer target and X-point major radii, and scales inversely with the poloidal magnetic field $B_\mathrm p$ . For the tokamaks ITER and SPARC the model predicts PFR widths below 0.3 mm.…”
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Statistical analysis on the validity of the cold plasma approximation for chorus waves based on Van Allen Probe observations and their effects on radiation belt electrons by AoJun Ren, Jiang Yu, Jing Wang, ZuZheng Chen, XiaoMan Liu

“…The statistical results show that the observed magnetic field intensities deviate substantially from those calculated from the cold plasma dispersion relation and that they become more pronounced with an increase in geomagnetic activity or a decrease in background plasma density. …”
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Beyond Basic Drag in Interplanetary CME Modeling: Effects of Solar Wind Pileup and High‐Speed Streams by C. Kay, T. Nieves‐Chinchilla, S. J. Hofmeister, E. Palmerio

“…ANTEATR‐PUP solves the Rankine‐Hugoniot equations for an oblique shock to determine the shock speed and sheath density, magnetic field, and temperature. The extra sheath mass affects the background drag calculation. …”
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