179 papers
Space physics explores the dynamic environment surrounding our planet and the wider solar system, focusing on how charged particles, magnetic fields, and solar winds interact with celestial bodies. This field helps us understand phenomena like auroras, space weather that can disrupt satellites, and the fundamental behavior of plasma in the vacuum of space. It bridges the gap between astronomy and particle physics, revealing the invisible forces that shape our cosmic neighborhood.
At Gist.Science, we process every new preprint in this category as it appears on arXiv, ensuring you get immediate access to the latest research. For each paper, we provide both a detailed technical summary for experts and a plain-language explanation that makes complex concepts understandable for everyone. Below are the latest space physics papers from arXiv, curated and simplified for your reading.
This study utilizes Parker Solar Probe observations from Encounters 1 through 24 to characterize the radial evolution of near-Sun solar wind plasma and magnetic field properties, revealing distinct temperature behaviors and fluctuation patterns that suggest wave-particle interactions drive proton beam generation and heating.
This study demonstrates that data-driven 2D fully kinetic simulations initialized with MMS mission parameters successfully reproduce the overall shape of ion and electron energy distributions during magnetotail magnetic reconnection, though they tend to underestimate the high-energy electron tail, highlighting the critical influence of initial upstream temperatures and the need for 3D models to fully capture observed particle energization.
This paper highlights how inconsistent definitions and implementations of coordinate system acronyms in space physics hinder reproducibility and proposes a set of recommendations—including standardized definitions, a citable reference database, centralized SPICE kernel maintenance, and explicit software documentation—to resolve these discrepancies.
This paper argues that the traditional first-order Fermi acceleration mechanism is physically inconsistent and should be replaced by the ballistic surfing acceleration (BSA) model, which correctly attributes cosmic ray spectral indices to magnetic field compression and accurately reproduces observed spectra and acceleration timescales in supernova shocks.
This paper presents a theoretical calculation of the low-frequency antenna resistance and shot noise to correct previous erroneous estimates from Parker Solar Probe data, demonstrating how this resistance influences receiver gain and plasma measurements.
This paper identifies 14 Solar Energetic Particle (SEP) events exhibiting "inverse velocity arrival" (IVA) features, where medium-energy particles arrive before both lower and higher-energy ones, and analyzes how factors like shock acceleration and transport conditions influence this unique arrival profile to advance understanding of SEP dynamics in the inner heliosphere.
This white paper proposes the establishment of the Solar Physics International Network for Swirls (SPINS) to advance the study of solar vortices through high-priority scientific research and the development of next-generation, multi-band spectropolarimetric instrumentation.
This paper explores the potential physical connections between extreme solar particle events recorded in natural archives and the superflares observed on other Sun-like stars, suggesting that their relationship is complex and governed by how magnetic topology dictates energy release.
The paper introduces "Reasoning With a Star," a new heliophysics dataset and benchmarking framework designed to evaluate agentic scientific reasoning by testing an LLM's ability to apply physical assumptions, maintain unit consistency, and follow complex reasoning workflows.
This study combines analytical methods and large-scale simulations to demonstrate that the maximum energy gained by particles during magnetic reconnection is determined by the number of magnetic flux rope mergers, which scales with the system size and is driven by Fermi reflection.