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Coronal Holes, Footpoint Reconnection, and the Origin of the Slow (and Fast) Solar Wind Sol. Phys. (IF 2.8) Pub Date : 2024-04-23 Y.-M. Wang
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The Effect of Horizontal Density-Inhomogeneity on Spicules Driven by Vertical Velocity Pulses Sol. Phys. (IF 2.8) Pub Date : 2024-04-23 Chao Zhang, Zhenghua Huang, Bo Li, Mijie Shi, Youqian Qi, Mingzhe Guo, Lidong Xia, Hui Fu, Hengyuan Wei
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Rieger, Schwabe, Suess-de Vries: The Sunny Beats of Resonance Sol. Phys. (IF 2.8) Pub Date : 2024-04-19 F. Stefani, G. M. Horstmann, M. Klevs, G. Mamatsashvili, T. Weier
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Magnetic Evolution of an Active Region Producing Successive Flares and Confined Eruptions Sol. Phys. (IF 2.8) Pub Date : 2024-04-19 Marcelo López Fuentes, Mariano Poisson, Cristina H. Mandrini
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Solar Radio Burst Prediction Based on a Multimodal Model Sol. Phys. (IF 2.8) Pub Date : 2024-04-19 Y. H. Wang, S. W. Feng, Q. F. Du, Y. Q. Zhong, J. Wang, J. Y. Chen, X. Yang, Y. Zhou
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Rotation Profiles of Coronal Bright Points Inside and Outside of Coronal Holes Sol. Phys. (IF 2.8) Pub Date : 2024-04-19 Davor Sudar, Roman Brajša, Ivica Skokić, Manuela Temmer, Steven Saar
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Forecasting Medium-Term F10.7 Using the Deep-Learning Informer Model Sol. Phys. (IF 2.8) Pub Date : 2024-04-16 Kun Zhang, Pingbing Zuo, Zhengyang Zou, Xueshang Feng, Yanshi Huang, Shijin Wang, Fengsi Wei, Hao Yang
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Emission Measures Demystified Sol. Phys. (IF 2.8) Pub Date : 2024-04-16 Brian R. Dennis, Kenneth J. H. Phillips
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Solar Soft X-ray Irradiance Variability III: Magnetic Field Variations of Coronal X-ray Features Sol. Phys. (IF 2.8) Pub Date : 2024-04-11 Rangaiah Kariyappa, H. N. Adithya, Satoshi Masuda, Kanya Kusano, Shinsuke Imada, Joe Zender, Luc Damé, Edward DeLuca, Mark Weber, Takuma Matsumoto
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The Tautenburg Solar Laboratory (TauSoL) as Pathfinder for SPRING Sol. Phys. (IF 2.8) Pub Date : 2024-04-09 Markus Roth, Hans-Peter Doerr, Hemanth Pruthvi, Michael Sigwarth, Dirk Soltau
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Rudolf Wolf to Alfred Wolfer: The Transfer of the Reference Observer in the International Sunspot Number Series (1876–1893) Sol. Phys. (IF 2.8) Pub Date : 2024-04-09 S. Bhattacharya, L. Lefèvre, T. Chatzistergos, H. Hayakawa, M. Jansen
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Inflows Towards Bipolar Magnetic Active Regions and Their Nonlinear Impact on a Three-Dimensional Babcock–Leighton Solar Dynamo Model Sol. Phys. (IF 2.8) Pub Date : 2024-04-05 Kinfe Teweldebirhan, Mark Miesch, Sarah Gibson
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Comprehensive Characterization of the Dynamics of Two Coronal Mass Ejections in the Outer Corona Sol. Phys. (IF 2.8) Pub Date : 2024-04-05 Leonardo Di Lorenzo, Laura Balmaceda, Hebe Cremades, Teresa Nieves-Chinchilla
Coronal mass ejections (CMEs) play a key role in determining space-weather conditions. Therefore, it is important to understand their evolution throughout the heliosphere. In this work, we carefully analyze the evolution of two kinematically different CMEs that erupted on 16 June 2010 and 14 June 2011, in a range of heliospheric distances of approximately 4 – 18 solar radii. From nearly simultaneous
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Photospheric Stereoscopy: Direct Estimation of Solar Surface-Height Variations Sol. Phys. (IF 2.8) Pub Date : 2024-04-05 Amanda Romero Avila, Bernd Inhester, Johann Hirzberger, Sami K. Solanki
The orbit of the Solar Orbiter mission carries it and the Polarimetric and Helioseismic Imager (PHI), which is onboard, away from the Sun–Earth line, opening up the first ever possibility of doing stereoscopy of solar photospheric structures. We present a method for a stereoscopic analysis of the height variations in the solar photosphere. This method enables the estimation of relevant quantities,
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Forbush Decreases and Associated Geomagnetic Storms: Statistical Comparison in Solar Cycles 23 and 24 Sol. Phys. (IF 2.8) Pub Date : 2024-03-28 A. A. Melkumyan, A. V. Belov, N. S. Shlyk, M. A. Abunina, A. A. Abunin, V. A. Oleneva, V. G. Yanke
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The Sun’s Large-Scale Flows I: Measurements of Differential Rotation & Torsional Oscillation Sol. Phys. (IF 2.8) Pub Date : 2024-03-27
Abstract We have developed a comprehensive catalog of the variable differential rotation measured near the solar photosphere. This catalog includes measurements of these flows obtained using several techniques: direct Doppler, granule tracking, magnetic pattern tracking, global helioseismology, as well as both time-distance and ring-diagram methods of local helioseismology. We highlight historical
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The Greatest GOES Soft X-ray Flares: Saturation and Recalibration over Two Hale Cycles Sol. Phys. (IF 2.8) Pub Date : 2024-03-27 Hugh Hudson, Ed Cliver, Stephen White, Janet Machol, Courtney Peck, Kim Tolbert, Rodney Viereck, Dominic Zarro
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Exploring Standing and Reflected Slow-Mode Waves in Flaring Coronal Loops: A Parametric Study Using 2.5D MHD Modeling Sol. Phys. (IF 2.8) Pub Date : 2024-03-22 Tongjiang Wang, Leon Ofman, Stephen J. Bradshaw
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Super-Resolution of SOHO/MDI Magnetograms of Solar Active Regions Using SDO/HMI Data and an Attention-Aided Convolutional Neural Network Sol. Phys. (IF 2.8) Pub Date : 2024-03-19 Chunhui Xu, Jason T. L. Wang, Haimin Wang, Haodi Jiang, Qin Li, Yasser Abduallah, Yan Xu
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Estimation of the Lifetime of Slow-Decaying Unipolar Active Regions in the Framework of the Turbulent Erosion Model Sol. Phys. (IF 2.8) Pub Date : 2024-03-15
Abstract We explore the properties and behavior of slow-decaying unipolar sunspot groups in the framework of the turbulent erosion model suggested by Petrovay and Moreno-Insertis (Astrophys. J. 485, 398, 1997). The basic concept of the model is the suppression of turbulent diffusivity inside a magnetic flux tube by strong magnetic fields. As a result, the outer turbulent plasma detaches magnetic features
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Correlation Functions of Photospheric Magnetic Fields in Solar Active Regions Sol. Phys. (IF 2.8) Pub Date : 2024-03-12
Abstract We used magnetograms acquired with the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory (SDO) to calculate and analyze spatial correlation functions and the multifractal spectra in solar active regions (ARs). The analysis was performed for two very different types of ARs: i) simple bipolar magnetic structures with regular orientation (the magnetomorphological
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Multiwavelength Observations of Quasiperiodic Pulsations in the Impulsive Phase of an Eruptive Flare with the Hard X-Ray Imager On Board ASO-S and Other Instruments Sol. Phys. (IF 2.8) Pub Date : 2024-03-12 Fanpeng Shi, Dong Li, Zongjun Ning, Alexander Warmuth, Wei Chen, Yang Su, Ying Li, Jun Xu, Yuxiang Song, Yuzhi Yang
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Solar Flare Forecasting Based on Magnetogram Sequences Learning with Multiscale Vision Transformers and Data Augmentation Techniques Sol. Phys. (IF 2.8) Pub Date : 2024-03-12 Luís Fernando L. Grim, André Leon S. Gradvohl
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In Situ Observation of Alfvén Waves in an ICME Shock-Sheath Indicating the Existence of Alfvénic Turbulence Sol. Phys. (IF 2.8) Pub Date : 2024-03-06 Omkar Dhamane, Anil Raghav, Zubair Shaikh, Vinit Pawaskar, Kalpesh Ghag, Prathmesh Tari, Utsav Panchal
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Reconstruction of Carrington Rotation Means of Open Solar Flux over the Past 154 Years Sol. Phys. (IF 2.8) Pub Date : 2024-03-05 Mike Lockwood, Mat Owens
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The Polar Field Reversal Process over Five Solar Cycles Sol. Phys. (IF 2.8) Pub Date : 2024-03-05 D. F. Webb, B. A. Emery, S. E. Gibson, I. M. Hewins, R. H. McFadden, T. A. Kuchar
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Non-reflective Propagation of Kink Waves in Magnetic-Flux Tubes in the Solar Atmosphere Sol. Phys. (IF 2.8) Pub Date : 2024-03-01 M. S. Ruderman, N. S. Petrukhin
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Data-Driven Forecasting of Sunspot Cycles: Pros and Cons of a Hybrid Approach Sol. Phys. (IF 2.8) Pub Date : 2024-02-27 Qinglin Xu, Rekha Jain, Wei Xing
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Mancha3D Code: Multipurpose Advanced Nonideal MHD Code for High-Resolution Simulations in Astrophysics Sol. Phys. (IF 2.8) Pub Date : 2024-02-20
Abstract The Mancha3D code is a versatile tool for numerical simulations of magnetohydrodynamic (MHD) processes in solar/stellar atmospheres. The code includes nonideal physics derived from plasma partial ionization, a realistic equation of state and radiative transfer, which allows performing high-quality realistic simulations of magnetoconvection, as well as idealized simulations of particular processes
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Spectra and Anisotropy of Solar Energetic Protons During GLE #65 on 28 October, 2003 and GLE #66 on 29 October, 2003 Sol. Phys. (IF 2.8) Pub Date : 2024-02-20 Alexander L. Mishev, Sergey A. Koldobskiy, Nicholas Larsen, Ilya G. Usoskin
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The McNish and Lincoln Solar-Activity Predictions: The Method and Its Performance Sol. Phys. (IF 2.8) Pub Date : 2024-02-19 Frédéric Clette, Shantanu Jain, Tatiana Podladchikova
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A Discussion of Implausible Total Solar-Irradiance Variations Since 1700 Sol. Phys. (IF 2.8) Pub Date : 2024-02-15 Theodosios Chatzistergos
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Observing the Sun with the Atacama Large Millimeter/Submillimeter Array (ALMA): Polarization Observations at 3 mm Sol. Phys. (IF 2.8) Pub Date : 2024-02-12
Abstract The Atacama Large Millimeter/submillimeter Array (ALMA) is a general purpose telescope that performs a broad program of astrophysical observations. Beginning in late 2016, solar observations with ALMA became available, thereby opening a new window onto solar physics. Since then, the number of solar observing capabilities has increased substantially but polarimetric observations, a community
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Temporal and Periodic Analysis of Penumbra–Umbra Ratio for the Last Four Solar Cycles Sol. Phys. (IF 2.8) Pub Date : 2024-02-12 Partha Chowdhury, Ali Kilcik, Ankit Saha, Jean-Pierre Rozelot, Vladimir Obridko, Robertus Erdélyi
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Localization of the Gamma-Ray Emission Region in the 1 September 2014 Behind-the-Limb Solar Flare According to the Fermi/LAT Data Sol. Phys. (IF 2.8) Pub Date : 2024-02-12
Abstract Since the launch of the Fermi mission in 2008, it has become possible to study high-energy solar \(\gamma\) -rays with an unprecedented imaging capability. In particular, the position of the \(>100\text{ MeV}\) \(\gamma\) -ray source can shed light on the origin of high-energy protons that is still controversial. However, the imaging of solar \(\gamma\) -ray sources with the Fermi Large Area
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Comparison of Line-of-Sight Magnetic Field Observed by ASO-S/FMG, SDO/HMI and HSOS/SMAT Sol. Phys. (IF 2.8) Pub Date : 2024-02-09
Abstract The Full-disk MagnetoGraph (FMG) onboard the Advanced Space based Solar Observatory has obtained a series of line-of-sight magnetic-field measurements since its launch in October 2022. It is important to compare its observational data with other existing solar telescopes. In this paper, we make a detailed comparison of four active regions and a pore region simultaneously observed by FMG, the
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The Instantaneous Response of the Geomagnetic Field, Near-Earth IMF, and Cosmic-Ray Intensity to Solar Flares Sol. Phys. (IF 2.8) Pub Date : 2024-02-09 Jouni Takalo
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Study of Reconnection Dynamics and Plasma Relaxation in MHD Simulation of a Solar Flare Sol. Phys. (IF 2.8) Pub Date : 2024-02-05 Satyam Agarwal, Ramit Bhattacharyya, Shangbin Yang
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An Interesting Correlation Between the Peak Slope and Peak Value of a Sunspot Cycle Sol. Phys. (IF 2.8) Pub Date : 2024-02-05
Abstract The maximum slope of the sunspot number during the rising phase of a sunspot cycle has an excellent correlation with the maximum value of the sunspot number during that cycle. This is demonstrated using a Savitzky–Golay filter to both smooth and calculate the derivative of the sunspot-number data. Version 2 of the International Sunspot Number ( \(S\) ) is used to represent solar activity.
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Energy Definition and Minimization in Avalanche Models for Solar Flares Sol. Phys. (IF 2.8) Pub Date : 2024-02-02
Abstract Self-organized critical avalanche models are a class of cellular automata that, despite their simplicity, can be applied to the modeling of solar (and stellar) flares and generate robust power-law distributions in event size measures. However, bridging the conceptual gap to both magnetohydrodynamics and real flare observations continues to prove challenging. In this paper, we focus on a specific
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On the Correlation of Cosmic-Ray Intensity with Solar Activity and Interplanetary Parameters Sol. Phys. (IF 2.8) Pub Date : 2024-01-24
Abstract We investigated correlations between cosmic-ray intensity and 14 solar and interplanetary parameters, which were classified into four cases. We used the modulation of cosmic-ray intensity observed at six distinct stations with different latitudes and cut-off rigidities. We used the partial least-squares (PLS) method to rank the parameters. In the first case, we employed 11 parameters without
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Sunspots Identification Through Mathematical Morphology Sol. Phys. (IF 2.8) Pub Date : 2024-01-23 Slava Bourgeois, Teresa Barata, Robertus Erdélyi, Ricardo Gafeira, Orlando Oliveira
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A Statistical Study of Solar White-Light Flares Observed by the White-Light Solar Telescope of the Lyman-Alpha Solar Telescope on the Advanced Space-Based Solar Observatory (ASO-S/LST/WST) at 360 nm Sol. Phys. (IF 2.8) Pub Date : 2024-01-23 Zhichen Jing, Ying Li, Li Feng, Hui Li, Yu Huang, Youping Li, Yang Su, Wei Chen, Jun Tian, Dechao Song, Jingwei Li, Jianchao Xue, Jie Zhao, Lei Lu, Beili Ying, Ping Zhang, Yingna Su, Qingmin Zhang, Dong Li, Yunyi Ge, Shuting Li, Qiao Li, Gen Li, Xiaofeng Liu, Guanglu Shi, Jiahui Shan, Zhengyuan Tian, Yue Zhou, Weiqun Gan
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Velocity Oscillations in CME and Related Shock: A Comparative Analysis Sol. Phys. (IF 2.8) Pub Date : 2024-01-22 V. G. Fainshtein, Y. I. Egorov
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Solar Flare Catalogue from 3 Years of Chandrayaan-2 XSM Observations Sol. Phys. (IF 2.8) Pub Date : 2024-01-22 Aravind Bharathi Valluvan, Ashwin Goyal, Devansh Jain, Abhinna Sundar Samantaray, Abhilash Sarwade, Kasiviswanathan Sankarasubramanian
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Two New Sub-GLEs Found in Data of Neutron Monitors at South Pole and Vostok: On 09 June 1968 and 27 February 1969 Sol. Phys. (IF 2.8) Pub Date : 2024-01-19
Abstract Intense solar energetic particle (SEP) events can be observed by neutron monitors (NMs) as so-called ground-level enhancements (GLEs). High-altitude polar NMs have high sensitivity for SEP due to the reduced atmospheric energy cutoff and very low geomagnetic rigidity cutoff compared to other NMs. There is a special class of sub-GLE events, viz. events that are weaker than standard GLEs and
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Magnetic Configuration of Active Regions Associated with GLE Events Sol. Phys. (IF 2.8) Pub Date : 2024-01-19 Regina A. Suleymanova, Leonty I. Miroshnichenko, Valentina I. Abramenko
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Solar Energetic Particles and Intensity of Metric Type II Radio Bursts Sol. Phys. (IF 2.8) Pub Date : 2024-01-11 Yuriy T. Tsap, Elena A. Isaeva, Yulia G. Kopylova
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Reconstructing Sunspot Number by Forward-Modelling Open Solar Flux Sol. Phys. (IF 2.8) Pub Date : 2024-01-09 Mathew J. Owens, Mike Lockwood, Luke A. Barnard, Ilya Usoskin, Hisashi Hayakawa, Benjamin J. S. Pope, Ken McCracken
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Statistical Properties of Magnetic Bright Points at Different Latitudes and Longitudes of the Sun Sol. Phys. (IF 2.8) Pub Date : 2024-01-02 Limin Zhao, Peng Yang, Haicheng Bai, Xiaoying Gong, Meng Sang, Yukuan Zhang, Yang Yang
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Slow Magnetoacoustic Waves in Smoothly Nonuniform Coronal Plasma Structures Sol. Phys. (IF 2.8) Pub Date : 2024-01-03 Viktor V. Fedenev, Valery M. Nakariakov, Sergey A. Anfinogentov
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A Survey and Statistical Study of Off-Limb Events Observed in SDO/HMI Continuum Intensity Sol. Phys. (IF 2.8) Pub Date : 2023-12-22 Jessica S. Zhao, Yang Liu
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Near-Surface Azimuthal Magnetic Fields and Their Role in Solar Activity Cycles Sol. Phys. (IF 2.8) Pub Date : 2023-12-22 Andrey G. Tlatov
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The Fibre Resolved OpticAl and Near-Ultraviolet Czerny–Turner Imaging Spectropolarimeter (francis) Sol. Phys. (IF 2.8) Pub Date : 2023-12-20 David B. Jess, Samuel D. T. Grant, William Bate, Jiajia Liu, Shahin Jafarzadeh, Peter H. Keys, Luís E. A. Vieira, Alisson Dal Lago, Fernando L. Guarnieri, Damian J. Christian, Doug Gilliam, Dipankar Banerjee
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Causal Analysis of Influence of the Solar Cycle and Latitudinal Solar-Wind Structure on Co-Rotation Forecasts Sol. Phys. (IF 2.8) Pub Date : 2023-12-13 Nachiketa Chakraborty, Harriet Turner, Mathew Owens, Matthew Lang
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Kilometric Type II Radio Emissions in Wind/WAVES TNR Data and Association with Interplanetary Structures Near Earth Sol. Phys. (IF 2.8) Pub Date : 2023-12-14 Franco Manini, Hebe Cremades, Fernando M. López, Teresa Nieves-Chinchilla
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Magnetic Properties of Source Regions of CMEs and DH Type II Radio Bursts Sol. Phys. (IF 2.8) Pub Date : 2023-12-14 P. Vijayalakshmi, A. Shanmugaraju, S. Aswin Amirtha Raj
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Derived Electron Densities from Linear Polarization Observations of the Visible-Light Corona During the 14 December 2020 Total Solar Eclipse Sol. Phys. (IF 2.8) Pub Date : 2023-12-05 Liam Edwards, Kaine A. Bunting, Brad Ramsey, Matthew Gunn, Tomos Fearn, Thomas Knight, Gabriel Domingo Muro, Huw Morgan
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The Magnetic-Field Calibration of the Full-Disk Magnetograph Onboard the Advanced Space Based Solar Observatory (ASO-S/FMG) Sol. Phys. (IF 2.8) Pub Date : 2023-12-06 S. Liu, J. T. Su, X. Y. Bai, Y. Y. Deng, J. Chen, Y. L. Song, X. F. Wang, H. Q. Xu, X. Yang