Results 91 to 100 of about 203,115 (295)

Slow onset type PCA events and associated pre-SSC polar geomagnetic disturbances [PDF]

Observation of polar geomagnetic disturbances in connection with polar cap absorptions of slow onset ...
Hakura, Y., Nagai, M.
core   +1 more source

Modeling Sun‐aligned polar cap arcs

Radio Science, 1994
We present results of a new model of the time‐dependent ionospheric response to a generalized steady state Sun‐aligned (SA) arc structure. The thermal and plasma structure of a “prototype” arc is compared to the general features of observed SA arcs. We find that the general features of electron density, Ne, electron temperature, Te, and ion temperature,
Crain, D. J., Sojka, Jan Josef, Schunk, Robert W., Zhu, Lie   +3 more
openaire   +3 more sources

Infrared Nanocrystals for Space Application: Hardness to Irradiations

Advanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret, Dario Mastrippolito, Bingbing Xia, Adrien Khalili, Maxime Lebreton, Giorgia Strobbia, Albin Colle, Marco Paye, Mariarosa Cavallo, Erwan Bossavit, Claire Abadie, Yoann Prado, Debora Pierucci, Victor Parahyba, Francois Coursaget, David Darson, Emrick Briand, Ian Vickridge, Stephane Demiguel, Sebastien Massenot, Jean‐Marc Belloir, Vincent Goiffon, Emmanuel Lhuillier   +22 more
wiley   +1 more source

Uncertainties of Modeling Gamma-Ray Pulsar Light Curves with Vacuum Dipole Magnetic Field

, 2010
Current models of pulsar gamma-ray emission use the magnetic field of a rotating dipole in vacuum as a first approximation to the shape of plasma-filled pulsar magnetosphere.
Abdo, Anatoly Spitkovsky, Bai, Bai, Cheng, Contopoulos, Deutsch, Dyks, Dyks, Dyks, Hirotani, Jackson, Muslimov, Muslimov, Spitkovsky, Spitkovsky, Takata, Takata, Thompson, Venter, Watters, Xue-Ning Bai, Yadigaroglu   +22 more
core   +1 more source

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Relation of electric field and particle precipitation in the polar cap region inferred from Akebono observations

Antarctic Record, 1994
Akebono (EXOS-D) observations revealed that an electric field in the polar cap region was very irregular and an entire polar cap region was filled with many electron precipitation spikes when the interplanetary magnetic field (IMF) was directed northward.
Takahiro Obara, Toshifumi Mukai, Hajime Hayakawa, Koichiro Tsuruda, Ayako Matsuoka, Atsuhiro Nishida   +5 more
doaj   +1 more source

Force-free magnetosphere of an aligned rotator with differential rotation of open magnetic field lines

, 2006
Here we briefly report on results of self-consistent numerical modeling of a differentially rotating force-free magnetosphere of an aligned rotator. We show that differential rotation of the open field line zone is significant for adjusting of the global
A. Gruzinov, A. N. Timokhin, A. Spitkovsky, A.G. Muslimov, A.K. Harding, A.N. Timokhin, F.C. Michel, I. Contopoulos, I. Contopoulos, I. Okamoto, J. Gil, J.C. McKinney, M.A. Ruderman, N. Bucciantini, P. Goldreich, S.P. Goodwin, S.S. Komissarov, V.S. Beskin   +17 more
core   +1 more source

Polarized radiation from extended magnetic polar caps

The Astrophysical Journal, 1987
Cyclotron emission from large magnetic polar caps in DQ Her binaries is calculated taking the magnetic field distribution and self-eclipses into account. The calculative method is based on the additivity of Stokes parameters for incoherent beams. The principal result obtained is that the large polar cap effectively leads to the averaging out of the ...
G. Chanmugam, J. Frank
openaire   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

Advanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan, Joe Sunny, Tamer Karaman, Reshma Peremadathil‐Pradeep, Emily Darwin, Felix Büttner, Dieter Suess, Hans Josef Hug, Manfred Albrecht   +8 more
wiley   +1 more source

Closed Fluxtubes and Dispersive Proton Conics at Jupiter's Polar Cap. [PDF]

Geophys Res Lett, 2022
Szalay JR, Clark G, Livadiotis G, McComas DJ, Mitchell DG, Rankin JS, Sulaiman AH, Allegrini F, Bagenal F, Ebert RW, Gladstone GR, Kurth WS, Mauk BH, Valek PW, Wilson RJ, Bolton SJ.   +15 more
europepmc   +1 more source