Magnetic monopole plasma oscillations and the survival of Galactic magnetic fields

AbstractThe role of starburst winds versus active galactic nuclei (AGN) jets/winds in the formation of the kiloparsec scale radio emission seen in Seyferts is not yet well understood. In order to be able to disentangle the role of various components, we have observed a sample of Seyfert galaxies exhibiting kpc-scale radio emission suggesting outflows, along with a comparison sample of starburst galaxies, with the EVLA B-array in polarimetric mode at 1.4 GHz and 5 GHz. The Seyfert galaxy NGC 2639, shows highly polarized secondary radio lobes, not observed before, which are aligned perpendicular to the known pair of radio lobes. The additional pair of lobes represent an older epoch of emission. A multi-epoch multi-frequency study of the starburst-Seyfert composite galaxy NGC 3079, reveals that the jet together with the starburst superwind and the galactic magnetic fields might be responsible for the well-known 8-shaped radio lobes observed in this galaxy. We find that many of the Seyfert galaxies in our sample show bubble-shaped lobes, which are absent in the starburst galaxies that do not host an AGN.

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Boundary Fitting Problems Associated with Coronal Magnetic Models

Symposium - International Astronomical Union ◽

10.1017/s007418090023413x ◽

1974 ◽

Vol 57 ◽

pp. 89-91 ◽

Cited By ~ 1

Author(s):

Kenneth H. Schatten

Keyword(s):

Magnetic Fields ◽

Legendre Polynomial ◽

Magnetic Monopole ◽

Polynomial Fit ◽

Coronal Magnetic Fields ◽

Boundary Fitting

The calculation of coronal magnetic fields was first suggested by Gold (1958). Altschuler and Newkirk (1969) and Newkirk et al. (1968) used a Legendre polynomial fit to the photospheric observations of magnetic fields whereas Schatten (1968) with Wilcox and Ness (Schatten et al., 1969) use a magnetic monopole fit, first incorporated by Schmidt (1964).

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FINITE ENERGY ONE-HALF MONOPOLE SOLUTIONS

Modern Physics Letters A ◽

10.1142/s0217732312502331 ◽

2012 ◽

Vol 27 (40) ◽

pp. 1250233 ◽

Cited By ~ 5

Author(s):

ROSY TEH ◽

BAN-LOONG NG ◽

KHAI-MING WONG

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

Magnetic Flux ◽

Topological Charge ◽

Magnetic Monopole ◽

Magnetic Charge ◽

Finite Energy ◽

Spatial Infinity ◽

Yang Mills ◽

The Magnetic Field

We present finite energy SU(2) Yang–Mills–Higgs particles of one-half topological charge. The magnetic fields of these solutions at spatial infinity correspond to the magnetic field of a positive one-half magnetic monopole at the origin and a semi-infinite Dirac string on one-half of the z-axis carrying a magnetic flux of [Formula: see text] going into the origin. Hence the net magnetic charge is zero. The gauge potentials are singular along one-half of the z-axis, elsewhere they are regular.

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The generation and dissipation of solar and galactic magnetic fields

Astrophysics and Space Science ◽

10.1007/bf00647427 ◽

1973 ◽

Vol 22 (2) ◽

pp. 279-291 ◽

Cited By ~ 33

Author(s):

E. N. Parker

Keyword(s):

Magnetic Fields ◽

Galactic Magnetic Fields

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Pseudo-magnetic fields of strongly-curved graphene nanobubbles

International Journal of Modern Physics B ◽

10.1142/s0217979218501370 ◽

2018 ◽

Vol 32 (11) ◽

pp. 1850137 ◽

Cited By ~ 2

Author(s):

Li-Chi Liu

Keyword(s):

Magnetic Fields ◽

Magnetic Monopole ◽

Spherical Surface ◽

Tight Binding ◽

Constant Field ◽

Curvature Effect ◽

Tight Binding Model ◽

Binding Model ◽

The Magnetic Field ◽

Orbital Axis

We use the [Formula: see text]-orbital axis vector (POAV) analysis to deal with large curvature effect of graphene in the tight-binding model. To test the validities of pseudo-magnetic fields (PMFs) derived from the tight-binding model and the model with Dirac equation coupled to a curved surface, we propose two types of spatially constant-field topographies for strongly-curved graphene nanobubbles, which correspond to these two models, respectively. It is shown from the latter model that the PMF induced by any spherical graphene nanobubble is always equivalent to the magnetic field caused by one magnetic monopole charge distributed on a complete spherical surface with the same radius. Such a PMF might be attributed to the isometry breaking of a graphene layer attached conformably to a spherical substrate with adhesion.

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