Browsing by Author "Cohen, I. J."

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Advanced Methods for Analyzing in-Situ Observations of Magnetic Reconnection
    (Springer Nature, 2024) Hasegawa, H.; Argall, M. R.; Aunai, N.; Bandyopadhyay, R.; Bessho, N.; Cohen, I. J.; Denton, R. E.; Dorelli, J. C.; Egedal, J.; Fuselier, S. A.; Garnier, P.; Génot, V.; Graham, D. B.; Hwang, K. J.; Khotyaintsev, Y. V.; Korovinskiy, D. B.; Lavraud, B.; Lenouvel, Q.; Li, T. C.; Liu, Y.-H.; Michotte de Welle, B.; Nakamura, T. K. M.; Payne, D. S.; Petrinec, S. M.; Qi, Y.; Rager, A. C.; Reiff, P. H.; Schroeder, J. M.; Shuster, J. R.; Sitnov, M. I.; Stephens, G. K.; Swisdak, M.; Tian, A. M.; Torbert, R. B.; Trattner, K. J.; Zenitani, S.; Rice Space Institute
    There is ample evidence for magnetic reconnection in the solar system, but it is a nontrivial task to visualize, to determine the proper approaches and frames to study, and in turn to elucidate the physical processes at work in reconnection regions from in-situ measurements of plasma particles and electromagnetic fields. Here an overview is given of a variety of single- and multi-spacecraft data analysis techniques that are key to revealing the context of in-situ observations of magnetic reconnection in space and for detecting and analyzing the diffusion regions where ions and/or electrons are demagnetized. We focus on recent advances in the era of the Magnetospheric Multiscale mission, which has made electron-scale, multi-point measurements of magnetic reconnection in and around Earth’s magnetosphere.
  • Thumbnail Image
    Item
    Global-Scale Processes and Effects of Magnetic Reconnection on the Geospace Environment
    (Springer Nature, 2024) Fuselier, S. A.; Petrinec, S. M.; Reiff, P. H.; Birn, J.; Baker, D. N.; Cohen, I. J.; Nakamura, R.; Sitnov, M. I.; Stephens, G. K.; Hwang, J.; Lavraud, B.; Moore, T. E.; Trattner, K. J.; Giles, B. L.; Gershman, D. J.; Toledo-Redondo, S.; Eastwood, J. P.
    Recent multi-point measurements, in particular from the Magnetospheric Multiscale (MMS) spacecraft, have advanced the understanding of micro-scale aspects of magnetic reconnection. In addition, the MMS mission, as part of the Heliospheric System Observatory, combined with recent advances in global magnetospheric modeling, have furthered the understanding of meso- and global-scale structure and consequences of reconnection. Magnetic reconnection at the dayside magnetopause and in the magnetotail are the drivers of the global Dungey cycle, a classical picture of global magnetospheric circulation. Some recent advances in the global structure and consequences of reconnection that are addressed here include a detailed understanding of the location and steadiness of reconnection at the dayside magnetopause, the importance of multiple plasma sources in the global circulation, and reconnection consequences in the magnetotail. These advances notwithstanding, there are important questions about global reconnection that remain. These questions focus on how multiple reconnection and reconnection variability fit into and complicate the Dungey Cycle picture of global magnetospheric circulation.