Radial Evolution of Interplanetary Shock Properties with Heliospheric Distance: Observations from Parker Solar Probe by Oksana Kruparova, Adam Szabo, Lan K. Jian, František Němec, Jana Šafránková, Zdeněk Němeček, Jacob Pasanen, Ayris Narock, Vratislav Krupar

“…We present a comprehensive analysis of 66 interplanetary shocks observed by the Parker Solar Probe between 2018 November and 2024 January. …”
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On the Heating of the Slow Solar Wind by Imbalanced Alfvén-wave Turbulence from 0.06 to 1 au: Parker Solar Probe and Solar Orbiter Observations by Sofiane Bourouaine, Jean C. Perez, Benjamin D. G. Chandran, Vamsee K. Jagarlamudi, Nour E. Raouafi, Jasper S. Halekas

“…In this work we analyze plasma and magnetic field data provided by the Parker Solar Probe and Solar Orbiter missions to investigate the radial evolution of the heating of Alfvénic slow wind by imbalanced Alfvén-wave (AW) turbulent fluctuations from 0.06 to 1 au. in our analysis we focus on slow solar-wind intervals with highly imbalanced and incompressible turbulence (i.e., magnetic compressibility C _B = δ B / B ≤ 0.25, plasma compressibility C _n = δ n / n ≤ 0.25, and normalized cross helicity σ _c ≥ 0.65). …”
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Improving Predictions of High‐Latitude Coronal Mass Ejections Throughout the Heliosphere by C. Scolini, E. Chané, J. Pomoell, L. Rodriguez, S. Poedts

“…This work shows that the low‐latitude approximations commonly employed in cone models, if not corrected, may significantly affect CME predictions at various locations compatible with the orbit of space missions such as Parker Solar Probe, Ulysses, and Solar Orbiter.…”
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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

“…This paper focuses on the latter, in part to provide context at the start of the new solar cycle 25, and toward establishing connections between the 1 AU ecliptic solar wind behavior and the unprecedented near‐Sun measurements of heliospheric features on Parker Solar Probe and Solar Orbiter. Magnetograph data‐based potential field source surface models provide a basic picture of how the solar wind sources, including those that give rise to corotating high speed streams in the ecliptic, have changed since the beginning of the record of regular solar wind measurements. …”
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A Series of Advances in Analytic Interplanetary CME Modeling by C. Kay, T. Nieves‐Chinchilla, S. J. Hofmeister, E. Palmerio, V. E. Ledvina

“…We model a CME–HSS interaction event observed by Parker Solar Probe in January 2022. The model improvements create a better match to the observed in situ profiles.…”
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Quasi-parallel Antisunward-propagating Whistler Waves Associated with the Electron Deficit in the Near-Sun Solar Wind: Particle-in-cell Simulation by Alfredo Micera, Daniel Verscharen, Jesse T. Coburn, Maria Elena Innocenti

“…In situ observations of the solar wind have shown that the electron velocity distribution function (VDF) consists of a quasi-Maxwellian core, comprising most of the electron population, and two sparser components: the halo, which are suprathermal and quasi-isotropic electrons, and an escaping beam population, the strahl. Recent Parker Solar Probe (PSP) and Solar Orbiter (SO) observations have added one more ingredient to the known nonthermal features, the deficit—a depletion in the sunward region of the VDF, already predicted by exospheric models but never so extensively observed. …”
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Transonic Turbulence and Density Fluctuations in the Near-Sun Solar Wind by L.-L. Zhao, A. Silwal, X. Zhu, H. Li, G. P. Zank

“…We use in situ measurements from the first 19 encounters of Parker Solar Probe and the most recent five encounters of Solar Orbiter to study the evolution of the turbulent sonic Mach number M _t (the ratio of the amplitude of velocity fluctuations to the sound speed) with radial distance and its relationship to density fluctuations. …”
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Radial Evolution of MHD Turbulence Anisotropy in Low Mach Number Solar Wind by Xingyu Zhu, Gary P. Zank, Lingling Zhao, Ashok Silwal

“…The Parker Solar Probe (PSP) and Wind spacecraft observed the same plasma flow during PSP encounter 15. …”
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A Transfer Learning Method to Generate Synthetic Synoptic Magnetograms by Xiaoyue Li, Valliappan Senthamizh Pavai, Daria Shukhobodskaia, Mark D. Butala, Luciano Rodriguez, Jasmina Magdalenic, Véronique Delouille

“…We evaluate Transfer‐Solar‐GAN by comparing modeled and measured solar wind velocity and magnetic field density parameters at the L1 Lagrange point and along the Parker Solar Probe (PSP) trajectory which were determined with EUHFORIA using both empirical GONG and artificial‐intelligence (AI)‐synthetic synoptic magnetograms as inputs. …”
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Time-dependent Acceleration and Escape of Charged Particles at Traveling Shocks in the Near-Sun Environment by Thomas M. Do, Federico Fraschetti, Jozsef Kota, Joe Giacalone, Christina M. S. Cohen, David J. McComas

“…We compare the “nose” structure at a few ∼100s keV protons first measured in situ by Parker Solar Probe in crossing the very fast 2022 September 5 shock at 0.07 au; we find that the nose is reasonably well explained by a lack of the highest energy particles not yet produced by the young shock by both our model and the no-escape version.…”
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Delay of Near-relativistic Electrons with Respect to Type III Radio Bursts throughout the Inner Heliosphere by J. G. Mitchell, E. R. Christian, G. A. de Nolfo, C. M. S. Cohen, M. E. Hill, A. Kouloumvakos, A. W. Labrador, R. A. Leske, D. J. McComas, R. L. McNutt Jr., D. G. Mitchell, M. Shen, N. A. Schwadron, M. E. Wiedenbeck, S. D. Bale, M. Pulupa

“…In this study, we examine energetic electron onsets and type III radio bursts observed by the Integrated Science Investigation of the Sun (IS⊙IS) and the FIELDS Radio Frequency Spectrometer instrument on Parker Solar Probe at a variety of heliocentric distances. …”
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Longitudinal Dependence of Heavy Ion Composition in the 2021 October 28 Ground Level Enhancement Event by C. M. S. Cohen, G. M. Mason, E. R. Christian, A. C. Cummings, G. A. de Nolfo, M. I. Desai, J. Giacalone, M. E. Hill, A. W. Labrador, R. A. Leske, D. J. McComas, R. L. McNutt Jr, D. G. Mitchell, J. G. Mitchell, G. D. Muro, J. S. Rankin, N. A. Schwadron, M. M. Shen, M. E. Wiedenbeck, Z. G. Xu, G. C. Ho, R. F. Wimmer-Schweingrüber

“…Here we describe the heavy ion signatures, specifically O and Fe, observed by multiple spacecraft. Parker Solar Probe, Solar Terrestrial Relations Observatory-Ahead, and Advanced Composition Explorer were distributed over nearly 60° in solar longitude and 0.4 au in heliocentric distance. …”
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Differentiating the Acceleration Mechanisms in the Slow and Alfvénic Slow Solar Wind by Yeimy J. Rivera, Samuel T. Badman, J. L. Verniero, Tania Varesano, Michael L. Stevens, Julia E. Stawarz, Katharine K. Reeves, Jim M. Raines, John C. Raymond, Christopher J. Owen, Stefano A. Livi, Susan T. Lepri, Enrico Landi, Jasper. S. Halekas, Tamar Ervin, Ryan M. Dewey, Rossana De Marco, Raffaella D’Amicis, Jean-Baptiste Dakeyo, Stuart D. Bale, B. L. Alterman

“…Through a well-timed conjunction between Solar Orbiter and Parker Solar Probe (PSP), we trace the energetics of slow wind to compare with a neighboring Alfvénic slow solar wind stream. …”
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