Results 81 to 90 of about 69,396 (273)

Exploring the solar system [PDF]

, 1964
Nasa programs for solar activity and radiation ...

core   +1 more source

Evolution of Ionospheric Ion Upflow Flux During the April 2023 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract We study the impact of the evolving magnetosphere‐ionosphere‐thermosphere system on upward ion fluxes during the 23–24 April 2023 geomagnetic storm. This storm has a “double‐dip” structure where two southward IMF Bz ${\mathrm{B}}_{z}$ periods cause two dips in the SYM‐H index.
Grace Kwon, Shasha Zou, Marc Hairston, Hu Sun, Maria Smirnova   +4 more
wiley   +1 more source

Studying the relationship of localization parameters of solar sources of magnetic clouds with their characteristics and substorm activity

Solar-Terrestrial Physics, 2019
We propose a method for determining location and orientation of extended solar sources of magnetic clouds, using coronagraph data and SOHO EIT/MDI images of the photosphere.
Barkhatov N.A., Revunova E.A., Romanov R.V., Barkhatova O.M., Revunov S.E.   +4 more
doaj   +1 more source

Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of axisymmetric pulsars

, 2014
We perform first-principles relativistic particle-in-cell simulations of aligned pulsar magnetosphere. We allow free escape of particles from the surface of a neutron star and continuously populate the magnetosphere with neutral pair plasma to imitate ...
Philippov, Alexander, Spitkovsky, Anatoly   +1 more
core   +1 more source

Derivation of the Two‐Dimensional Distribution of Low‐Energy Electron Precipitation From 630‐nm All‐Sky Auroral Images and Its Application to the Polar Cap Boundary Near Midnight

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract We present a methodology for deriving the horizontal two‐dimensional distribution of low‐energy electron precipitation, specifically the possible lower bound of the differential energy flux of electron precipitation at 100 eV, from a 630‐nm auroral image obtained with a ground‐based all‐sky imager.
K. Yashima, S. Taguchi, K. Hosokawa, H. Koike   +3 more
wiley   +1 more source

Saturation of the magnetosphere during superstorms: new results from the magnetogram inversion technique

Solar-Terrestrial Physics, 2017
Using data on three superstorms, we study new features of the saturation of the polar cap area when the solar wind (SW) increases. The polar cap saturation is shown to occur when the SW dynamic pressure and southward vertical (IMF) component rise.
Mishin V.V., Karavaev Yu.A.
doaj   +1 more source

Formation of "Lightnings" in a Neutron Star Magnetosphere and the Nature of RRATs

, 2011
The connection between the radio emission from "lightnings" produced by the absorption of high-energy photons from the cosmic gamma-ray background in a neutron star magnetosphere and radio bursts from rotating radio transients (RRATs) is investigated ...
A. A. Abdo, A. D. Kuz’min, A. Esamdin, A. G. Lyne, A. G. Lyne, A. G. Lyne, A. J. Deutsch, A. Karastergiou, A. V. Gurevich, B. J. Rickett, C. S. Shukre, D. A. Rumyantsev, D. N. Sobyanin, D. P. Barsukov, D. P. Barsukov, E. F. Keane, F. Camilo, F. Camilo, L. Levin, M. A. McLaughlin, M. A. McLaughlin, M.V. Chistyakov, N. P. Klepikov, N. Wang, P. Goldreich, S. Burke-Spolaor, V. M. Malofeev, V. M. Malofeev, V. M. Malofeev, V. Radhakrishnan, V. S. Beskin, V. S. Beskin, Ya. N. Istomin, Ya. N. Istomin, Ya. N. Istomin, Ya. N. Istomin, Ya. N. Istomin, Ya. N. Istomin, Yu. P. Shitov, Yu. P. Shitov   +39 more
core   +1 more source

Debye‐Scale Bipolar Structures and Their Role in the Electron Trajectory Instability at the Bow Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A number of mechanisms have been suggested to operate within the terrestrial bow shock to redistribute energy contained in the incoming solar wind flow. The majority of mechanisms involve the generation of turbulence while some are based on particle motion alone.
Simon N. Walker, Michael Gedalin, Michael A. Balikhin   +2 more
wiley   +1 more source

Magnetic Mapping in the Inner Magnetosphere using Kamodo         [PDF]

, 2022
L. Rastäetter, Rebecca Ringuette, Darren L. De Zeeuw, Oliver Gerland   +3 more
openalex   +1 more source

A correlative investigation of the propagation of ULF wave power through the dayside magnetosphere [PDF]

Three different ULF wave phenomena (azimuthally polarized Pc 3 pulsations, radially polarized Pc 4 pulsations, and solitary Pc 5 pulsations related to solar wind pressure pulses) were studied. The main problems covered are: (1) how do magnetospheric Pc 3-
Engebretson, Mark J.
core   +1 more source