I. J. Cohen

MMS Observations of Multi‐Species Wave‐Particle Interactions and Rapid Foreshock Evolution

G. Le, X. Blanco‐Cano, Yuxi Chen, Megha Pandya et autres

Abstract The ion foreshock is the region upstream of Earth's bow shock where magnetic field lines connect to the quasi‐parallel shock surface. Within this region, there exist a variety of backstreaming ion populations from the shock ramp that can generate ultra‐low frequency …

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Characterizing Plasma Sheet Flows With Machine Learning Identification

B. N. Powers, S. N. F. Chepuri, A. N. Jaynes, A. Lindquist et autres

Abstract Bursty bulk flows, injections, and related flows are a key component of plasma energy and flux transport during substorms. Mixed observational features require researchers to carefully define their quantitative criteria in studies of such events, a process that requires presuming some …

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The Partition of Energy Flux Transport at Bursty Bulk Flows

S. N. F. Chepuri, P. H. Reiff, A. N. Jaynes, D. J. Gershman et autres

Abstract Bursty bulk flows (BBFs) are fast flows of plasma in the tail and are responsible for much of the energy flux transport earthward from the tail into the inner magnetosphere despite being relatively short‐lived. BBFs are often accompanied by injections in …

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The Correlation Function for Magnetic Field Fluctuations at Ion Dissipation Scales in the Solar Wind

A. Ángeles, H. E. Spence, C. W. Smith, Bernard J. Vasquez et autres

This study investigates energy dissipation in small-scale solar wind turbulence using a novel approach to autocorrelation function analysis leveraging high-resolution data from the Magnetospheric Multiscale Mission (MMS). We analyze magnetic field fluctuations at ion dissipation scales, focusing on short 20-second intervals to …

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The Correlation Function for Magnetic Field Fluctuations at Ion Dissipation Scales in the Solar Wind

A. Ángeles, H. E. Spence, C. W. Smith, Bernard J. Vasquez et autres

Abstract This study investigates energy dissipation in small‐scale solar wind turbulence using a novel approach to autocorrelation function analysis leveraging high‐resolution data from the Magnetospheric Multiscale Mission (MMS). We analyze magnetic field fluctuations at ion dissipation scales, focusing on short 20‐s intervals …

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Statistical Analysis of Storm‐Time O + Outflows as Observed by the Van Allen Probes

Aditi Upadhyay, M. Gkioulidou, S. Ohtani, I. J. Cohen

Abstract The outflow of low‐energy ions into inner magnetosphere is a key contributor to the warm plasma cloak, and O + torus, which can also contribute to storm time ring current particularly after local acceleration. Although outflows are well observed, their source …

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Interstellar Mapping And Acceleration Probe: The NASA IMAP Mission

D. J. McComas, E. R. Christian, N. A. Schwadron, M. Gkioulidou et autres

NASA's Interstellar Mapping and Acceleration Probe (IMAP) mission provides extensive and well-coordinated new observations of the inner and outer heliosphere and scientific closure on two of the most important topics in Heliophysics: 1) the acceleration of charged particles and 2) the interaction …

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On the Spatial Relationship Between the Aurora and Relativistic Electron Precipitation During a Storm‐Time Substorm

Mykhaylo Shumko, Anton Artemyev, Savvas Raptis, Ying Zou et autres

Abstract During substorms, Earth's magnetotail undergoes rapid dipolarization, driving Earthward plasma flows that decelerate and dissipate energy upon encountering the dipole magnetic field in the nightside transition region. This region mediates the interaction between the magnetotail, inner magnetosphere, and the ionospheric auroral …

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The Correlation Function for Magnetic Field Fluctuations at Ion Dissipation Scales in the Solar Wind

A. Ángeles, H. E. Spence, C. W. Smith, Bernard J. Vasquez et autres

This study investigates energy dissipation in small-scale solar wind turbulence using a novel approach to autocorrelation function analysis leveraging high-resolution data from the Magnetospheric Multiscale Mission (MMS). We analyze magnetic field fluctuations at ion dissipation scales, focusing on short 20-second intervals to …

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The Uranus Flagship: Investigating New Paradigms for Outer Solar System Exploration Workshop Summary Report

Amy Simon, L. M. Prockter, I. J. Cohen, Kathleen Mandt et autres

This white paper is a summary of the Uranus Flagship Workshop that took place 21 to 23 May 2024 at NASA's Goddard Space Flight Center. Co-led by Goddard and Johns Hopkins Applied Physics Lab conveners, we had a broad, international, Science Organizing …

Statistical analysis of storm-time $O^+$ outflows as observed from the Van Allen Probes

Aditi Upadhyay, M. Gkioulidou, S. Ohtani, I. J. Cohen

The outflow of low-energy O$^+$ ions into inner magnetosphere is a key contributor to the warm plasma cloak, and O+ torus, which can also contribute to storm time ring current particularly after local acceleration. Although O$^+$ outflows are well observed, their source …

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Energy Partitioning Between Thermal and Non‐Thermal Electrons and Ions in Magnetotail Reconnection

Abhishek Rajhans, M. Oka, M. Øieroset, T. D. Phan et autres

Abstract Magnetic reconnection is an explosive energy release event. It plays an important role in accelerating particles to high non‐thermal energies. These particles often exhibit energy spectra characterized by a power‐law distribution. However, the partitioning of energy between thermal and non‐thermal components, …

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