Results 31 to 40 of about 3,964,850 (349)

Ultrafast annular-magnetic-field-driven vortex-core reversals

AIP Advances, 2016
By micromagnetic numerical simulations, we investigate the dynamics of vortex-core reversal in a soft magnetic nanodisk under the excitation of annular, perpendicular, resonant magnetic fields.
Zhenyu Wang, Ruifang Wang
doaj   +1 more source

Transcriptomics as an Early Warning of Domoic Acid Exposure in Pacific Razor Clams (Siliqua patula)

Toxins
As oceans warm, harmful algal blooms (HABs) are expected to increase, including blooms of Pseudo-nitzschia, a diatom that produces domoic acid (DA), which is a potent neurotoxin.
Lizabeth Bowen, Shannon Waters, Brenda Ballachey, Heather Coletti, Zachary Forster, Jie Li, Bradley Jenner   +6 more
doaj   +1 more source

A Laboratory Model for Iron Snow in Planetary Cores

Geophysical Research Letters, 2023
Solidification of the cores of small planets and moons is thought to occur in the “iron snow” regime, in which iron crystals form near the core‐mantle boundary and fall until re‐melting at greater depth. The resulting buoyancy flux may sustain convection
Ludovic Huguet, Michael Le Bars, Renaud Deguen   +2 more
doaj   +1 more source

Site-selective nuclear magnetic relaxation time in a superconducting vortex state

, 2000
The temperature and field dependences of the site-selective nuclear spin relaxation time T_1 around vortices are studied comparatively both for s-wave and d-wave superconductors, based on the microscopic Bogoliubov-de Gennes theory. Reflecting low energy
Caroli C., Caroli C., Curro N. J., de Gennes P. G., Fite W., Franz M., Franz M., Haase J., Han J. H., Hayashi N., Hayashi N., Hayashi N., Hayashi N., Himeda A., Horvatić M., Hudson E. W., Ichioka M., Ichioka M., Ichioka M., Ichioka M., Ichioka M., Ishida K., Jankó B., Jankó B., Kramer L., Kung A., Leadon R., Machida K., Maggio-Aprile I., Masuda Y., Mayaffre H., Mel'nikov A. S., Morr D. K., Ogata M., Ozaki M., Renner Ch., Silbernagel B. G., Sonier J., Sá de Melo C. A. R., Takigawa M., Volovik G. E., Wang Y., Wang Y., Won H., Wortis R.   +44 more
core   +1 more source

Protostellar Jet and Outflow in the Collapsing Cloud Core

, 2009
We investigate the driving mechanism of outflows and jets in star formation process using resistive MHD nested grid simulations. We found two distinct flows in the collapsing cloud core: Low-velocity outflows (sim 5 km/s) with a wide opening angle ...
A Belloche, GA Hirth, H Masunaga, MN Machida, MN Machida, MN Machida, MN Machida, MN Machida, MN Machida, MN Machida, R Mundt, RB Larson, T Nakano, T Pyo   +13 more
core   +1 more source

Geomagnetic core field models and secular variation forecasts for the 13th International Geomagnetic Reference Field (IGRF-13)

Earth, Planets and Space, 2020
Observations of the geomagnetic field taken at Earth’s surface and at satellite altitude are combined to construct continuous models of the geomagnetic field and its secular variation from 1957 to 2020.
I. Wardinski, D. Saturnino, H. Amit, A. Chambodut, B. Langlais, M. Mandea, E. Thébault   +6 more
doaj   +1 more source

Quantitative stray field imaging of a magnetic vortex core [PDF]

, 2013
Thin-film ferromagnetic disks present a vortex spin structure whose dynamics, added to the small size (~10 nm) of their core, earned them intensive study.
Hingant, T., Jacques, V., Roch, J. -F., Rohart, S., Rondin, L., Tetienne, J. -P., Thiaville, A.   +6 more
core   +2 more sources

The intensity of the geomagnetic field from 2.4 Ga old Indian dykes

Geochemistry, Geophysics, Geosystems, 2014
Precambrian paleomagnetic records from dyke swarms provide a unique source of information regarding the Archean geomagnetic field and more specifically the average field strength produced by the early dynamo.
Jean‐Pierre Valet, Jean Besse, Anil Kumar, Sayoob Vadakke‐Chanat, Edouard Philippe   +4 more
doaj   +1 more source

A Long-lived Lunar Magnetic Field Powered by Convection in the Core and a Basal Magma Ocean

The Planetary Science Journal, 2023
An internally generated magnetic field once existed on the Moon. This field reached high intensities (∼10–100 μ T, perhaps intermittently) from ∼4.3 to 3.6 Gyr ago and then weakened to ≲5 μ T before dissipating by ∼1.9–0.8 Gyr ago.
Saira S. Hamid, Joseph G. O’Rourke, Krista M. Soderlund   +2 more
doaj   +1 more source

Testing Magnetic Field Models for the Class 0 Protostar L1527

, 2014
For the Class 0 protostar, L1527, we compare 131 polarization vectors from SCUPOL/JCMT, SHARP/CSO and TADPOL/CARMA observations with the corresponding model polarization vectors of four ideal-MHD, non-turbulent, cloud core collapse models.
Chapman, N. L., Crutcher, R. M., Davidson, J. A., Hull, C. L. H., Jones, T. J., Kwon, W., Li, Z. -Y., Looney, L. W., Matthews, B. C., Novak, G., Plambeck, R. L., Stephens, I. W., Tobin, J. J.   +12 more
core   +1 more source