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We report the properties of a novel type of sub-proton scale magnetic hole found in two dimensional PIC simulations of decaying turbulence with a guide field. The simulations were performed with a realistic value for ion to electron mass…

Plasma Physics · Physics 2015-06-23 Christopher T. Haynes , David Burgess , Enrico Camporeale , Torbjorn Sundberg

A deconstructed holographic model for an $s$-wave superconductor in $2+1$ dimensions has been proposed in the literature. Here, we consider solutions in the presence of perpendicular magnetic fields, where vortex formed. We calculate the…

High Energy Physics - Theory · Physics 2018-06-07 Zainul Abidin , Herry J. Kwee , Jong Anly Tan

Low magnetic field scanning tunneling spectroscopy of individual Abrikosov vortices in heavily overdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ unveils a clear d-wave electronic structure of the vortex core, with a zero-bias conductance peak at…

Superconductivity · Physics 2021-08-25 Tim Gazdić , Ivan Maggio-Aprile , Genda Gu , Christoph Renner

An ultrathin superconducting bilayer creates a coreless fractional vortex when only the second layer has a hole. The quantization is broken by the hole, and the normal core disappears. The magnetic flux is no longer confined near the normal…

Superconductivity · Physics 2018-05-10 Y. Tanaka , H. Yamamori , T. Yanagisawa , T. Nishio , S. Arisawa

We present the discovery of a magnetic field on the white dwarf component in the detached post common envelope binary (PCEB) CC Cet. Magnetic white dwarfs in detached PCEBs are extremely rare, in contrast to the high incidence of magnetism…

Solar and Stellar Astrophysics · Physics 2021-09-08 David J. Wilson , Odette Toloza , John D. Landstreet , Boris T. Gaensicke , Jeremy J. Drake , J. J. Hermes , Detlev Koester

We report the observations of an electron vortex magnetic hole corresponding to a new type of coherent structures in the magnetosheath turbulent plasma using the Magnetospheric Multiscale (MMS) mission data. The magnetic hole is…

Observations suggest a slower stellar rotation relative to gas rotation in the outer part of the Milky Way Galaxy. This difference could be attributed to an interaction with the interstellar magnetic field. In a simple model, fields of…

Astrophysics of Galaxies · Physics 2016-12-21 Joanna Jałocha , Łukasz Bratek , Jan Pękala , Szymon Sikora , Marek Kutschera

The origin of magnetic fields in white dwarfs (WDs) remains mysterious. Magnetic WDs are traditionally associated with field strengths $\gtrsim1\,\mathrm{MG}$, set by the sensitivity of typical spectroscopic magnetic field measurements.…

Solar and Stellar Astrophysics · Physics 2025-01-30 Nicholas Z. Rui , Jim Fuller , J. J. Hermes

An ideal gas of twodimensional Dirac fermions in the background of a pointlike magnetic vortex with arbitrary flux is considered. We find that this system acquires fractional electric charge at finite temperatures and determine the…

High Energy Physics - Theory · Physics 2009-11-10 Yurii A. Sitenko , Volodymyr M. Gorkavenko

Ground-state properties of a two-dimensional system of superconducting vortices in the presence of a periodic array of strong pinning centers are studied analytically and numerically. The ground states of the vortex system at different…

Superconductivity · Physics 2009-11-07 Toby Joseph , Chandan Dasgupta

Spectropolarimetic campaigns have established that large-scale magnetic fields are present at the surfaces of approximately 10% of massive dwarf stars. However, there is a dearth of magnetic field measurements for their deep interiors.…

Solar and Stellar Astrophysics · Physics 2024-11-20 D. M. Bowman , D. Lecoanet , T. Van Reeth

In a recent paper by Link, it was pointed out that the the standard picture of the neutron star core, composed of a mixture of a neutron superfluid and a proton type-II superconductor, is inconsistent with observations of long period…

High Energy Physics - Phenomenology · Physics 2009-11-10 Kirk B. W. Buckley , Max A. Metlitski , Ariel R. Zhitnitsky

Compared to the results in \cite{Shivamoggi}, using the normal mode method, we have rigorously confirmed that a transverse magnetic field reduces the stability of the system. Specifically, a larger velocity is required for stability in the…

Analysis of PDEs · Mathematics 2025-04-28 Binqiang Xie , Yueyang Feng , Ying Zhang

We study the possibility of the vortices formation in axion condensate on the galactic scale. Such vortices can occur as a result of global rotation of the early universe. We study analytical models of vortices and calculate exemplary…

Astrophysics · Physics 2010-09-28 Jakub Mielczarek , Tomasz Stachowiak , Marek Szydlowski

In this paper we examine the role of weak magnetic fields in breaking Kelvin's circulation theorem and in vortex breakup in two-dimensional magnetohydrodynamics for the physically important case of a low magnetic Prandtl number (low $Pm$)…

Fluid Dynamics · Physics 2018-06-12 D. G. Dritschel , P. H. Diamond , S. M. Tobias

Hydrostatic equilibrium of the multiphase interstellar medium in the solar vicinity is reconsidered, with the regular and turbulent magnetic fields treated separately. The regular magnetic field strength required to support the gas is…

Astrophysics · Physics 2009-11-06 Andrew Fletcher , Anvar Shukurov

Magnetic platelets with a vortex configuration are attracting considerable attention. The discovery that excitation with small in-plane magnetic fields or spin polarised currents can switch the polarisation of the vortex core did not only…

The global-scale interior magnetic field needed to account for the Sun's observed differential rotation can be effective only if confined below the convection zone in all latitudes, including the polar caps. Axisymmetric nonlinear MHD…

Solar and Stellar Astrophysics · Physics 2015-05-19 Toby S. Wood , Michael E. McIntyre

We present a new scenario for magnetic field amplification where an electrically conducting fluid is confined in a differentially rotating, spherical shell with thin aspect-ratio. When the angular momentum sufficiently decreases outwards,…

Fluid Dynamics · Physics 2016-06-14 Florence Marcotte , Christophe Gissinger

Based on CO(2-1) public data, we study the monoxide oxygen gas excitation conditions and the magnetic field strength of four spiral galaxies. For the galaxy outskirts, we found kinetic temperatures in the range of $\lesssim$35--38 K, CO…

Astrophysics of Galaxies · Physics 2017-09-20 Ericson López , Jairo Armijos-Abendaño , Mario Llerena , Franklin Aldás
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