Opposite Magnetic Poles Research Articles

The discovery of variable polarization over the 13.9 minute spin period of the intermediate polar RE 0751 + 14

view Abstract Citations (83) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Discovery of Variable Polarization over the 13.9 Minute Spin Period of the Intermediate Polar RE 0751+14 Piirola, V. ; Hakala, P. ; Coyne, G. V. Abstract The discovery is reported of variable linear and circular polarization over the 13.9 minute spin period of the intermediate polar (IP) RE 0715 + 14. Evidence is found of accretion onto extended ribbonlike regions near two opposite magnetic poles. The polarized fluxes detected in the red and NIR band suggest that RE 0751 + 14 has a stronger magnetic field than the other known IPs. The existence of a highly asynchronous magnetic binary with a field strength approaching those found in the strictly synchronous CV counterparts, if confirmed, would be important for checking the effects of magnetic torque on the binary evolution. Publication: The Astrophysical Journal Pub Date: June 1993 DOI: 10.1086/186891 Bibcode: 1993ApJ...410L.107P Keywords: Accretion Disks; Binary Stars; Circular Polarization; Light Curve; White Dwarf Stars; Photosphere; Stellar Magnetic Fields; Astrophysics; ACCRETION; ACCRETION DISKS; STARS: BINARIES: CLOSE; MAGNETIC FIELDS; POLARIZATION; STARS: INDIVIDUAL ALPHANUMERIC: RE 0751; 14; STARS: WHITE DWARFS full text sources ADS | data products SIMBAD (1)

Video Magnetic Field and Velocity Fields of Solar Flares and Relative Active Region

By means of Solar Magnetic Field Telescope, the fine structure of video magnetic fields (5324A) and sight-of-line velocity fields (4861A) of flare active region on July 23 (E53, S19) and Aug. 8(W25, S28) in 1987 has been obtained. The main characters are following:1. The flares occur in places where there are compressive and osmotic motion between opposite magnetic poles. In some causes, the osmotic opposite magnetic pole dissipates after the flares.

Low-frequency polarimetry of the millisecond pulsar PSR1937 + 214

Pulsars with periods of a few milliseconds1,2 test theories of the radio emission process in extreme conditions. The velocity of light radius, which is an important scale-length in most theories, is less than 10 stellar radii for the millisecond pulsar PSR1937 + 214, and the inferred surface magnetic field is a few times 108 G, less than 10−3 that inferred for the Crab pulsar. Polarization observations across both the main pulse and the prominent interpulse can help clarify the emission geometry and probe similarities between this pulsar and others, such as the Crab pulsar, that have very different magnetospheric conditions. High-frequency polarization observations exist for this pulsar3,4, but the temporal smearing produced by interstellar dispersion has hampered low-frequency observations. We now report polarization observations at 431 MHz that have 4 µs time resolution and are free from the effects of interstellar dispersion. We find that the interpulse polarization decreases towards lower frequencies, opposite in trend to the polarization of the main pulse and of most other pulsars. The position angles at the centre of the main pulse and interpulse are approximately equal and the position angle gradients have the same sign, supporting a model in which the main pulse and interpulse are emitted above opposite magnetic poles.

The acceleration magnetic field of a steady-current loop

Centripetal acceleration in a current loop results in an azimuthal, inverse-square magnetic field--with no counterpart from differentially separated, opposite magnetic poles. A result, large on the atomic scale of dimensions, is a torque that rotates such moments to be collinear with an applied field, i.e., space quantization.

An hydrodynamic explanation of mitotic figures

The distinctly polar arrangement of the chromatin substance about the astral centers in dividing cells, combined with the pronounced curvature of the astral rays and of the spindle fibers, have demanded the assumption of some polar force as universally operative. On such an assumption it is of course necessary to assume further that astral centers represent either opposite or like poles. On the alternative of opposite poles, we should expect, with any force so far proposed, a configuration of astral rays simulating that of iron filings between opposite magnetic poles, coupled with a mutual attraction of the astral centers. On the other alternative, we should similarly expect a configuration of astral rays and spindle fibers simulating that of iron filings between like magnetic poles, coupled with a mutual repulsion of the astral centers. Actually, we have neither of these conditions, but instead, a configuratian like that of iron filings between opposite magnetic poles and at the same time an apparent repulsion between the astral centers or the centrosomes. This is not the case with the forces of attraction or repulsion existing between bodies oscillating or pulsating in a fluid medium. More specifically, if two spheres are pulsating synchronously and in opposite phase, or oscillating synchronously and in the same phase, they will repel one another, but at the same time the field between them will simulate the configuration of iron filings between opposite magnetic poles. If then we assume that the centrosomes are pulsating in opposite phase, or better, oscillating in the same phase, we will obtain the desired repulsion and at the same time have a configuration like that actually observed.