Sentences with phrase «of stellar magnetic fields»

Here, by carrying out a series of simulations of stellar magnetic fields, Antoine Strugarek and colleagues show that the Sun's magnetic cycle depends on its rotation rate and luminosity.

Not exact matches

Inside this shell is a ghostly blue glow that is radiation given off by electrons spiraling at nearly the speed of light in the powerful magnetic field around the crushed stellar core.

The shock waves from such stellar explosions, or the magnetic fields of the superdense neutron stars left behind, were thought to be able to boost particles from the explosion and surrounding region to very high energies.

Such a fierce stellar wind would batter the atmosphere of any planet in the habitable zone, unless that planet was shielded by a magnetic field.

They used a series of filters, like polarised, glare - blocking sunglasses but bigger and more precise, to observe the light from a nearby, relatively dim neutron star — a dense stellar corpse with a colossal magnetic field — and compared it with light from ordinary nearby stars.

Another protostar forming in the same cloud of material, dubbed W75N (B)- VLA 1, sported an organized magnetic field in 1996 and therefore is farther along in its stellar evolution, likely because it's more massive.

But observations last year hint that the protostar's stellar wind was flowing more quickly from the object's poles (relative speeds depicted in bluish ovoid in image above), and its magnetic field had become aligned with that of the larger cloud of gas and dust that surrounds it, the researchers report online today in Science.

They looked at light from a neutron star — a dense stellar corpse with a colossal magnetic field — through a series of filters.

They combined observations in the visible and the near infrared from the Hubble Space Telescope with radio observations from the Very Large Array and the Submillimeter Array to explore the effect of the turbulence, stellar radiation, and magnetic field on massive star formation in the galaxy's nuclear ring.

«These data recover the well - known solar 5 - minute oscillation at a peak of 3 mHz (5.5 min) from the disk - averaged light with a radial - velocity amplitude of only 47 cm / s, an incredibly small velocity from a stellar point of view», says Prof. Strassmeier, PEPSI principal investigator and director of the Cosmic Magnetic Field branch at the Leibniz Institute for Astrophysics Potsdam (AIP).

Superflares - According to one recent hypothesis, unusually intense stellar flares from a sun - like («Sol - type») star could be caused by the interaction of the magnetic field of a giant planet in tight orbit with that star's own magnetic field.

This governs the nature of the dynamo that generates magnetic field in the stellar interior and determines the observed large - scale magnetic structure.

Binary central stars, stellar discs and magnetic fields have been suggested as the mechanism that produces such a variety of shapes.

Supernova remnants — the leftovers of massive stellar explosions — possess magnetic fields much stronger than previously thought, recent observations of pulsating X-ray hot spots reveal.

X-rays are emitted from a star's corona — the «outer atmosphere» of a stellar body that forms as the result of complex interactions between a stellar body's magnetic fields and its turbulent outer layer.

Our results show not only the magnetic field orientation of around young stellar objects but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight.

With the VLBA's capability to make detailed maps of the star's magnetic field and to monitor the mass - loss process, the researchers hope to shed some light on this longstanding mystery of stellar physics.

Current - day Earth generates a strong magnetic field capable of deflecting the majority of the stellar material flung at it through events such as a coronal mass ejections.

The study does not address whether Proxima Centauri's activity cycle would affect the potential habitability of the planet Proxima b. Theory suggests that flares or a stellar wind, both of which are driven by magnetic fields, could scour the planet and strip away any atmosphere.

A number of physical mechanisms could locally increase the dust scale height near the inner disk wall, and we discuss several of those mechanisms; the most plausible mechanisms are either a disk warp due to interaction with the stellar magnetic field or dust entrained in funnel - flow accretion columns arising near the inner disk wall.

In 2010, model simulations of rocky super-Earths between two and 10 Earth - masses indicated that high pressures could keep their cores solid instead of molten, which would prevent a protective magnetic field from forming protecting developing surface life from stellar radiation.

Without a magnetic field generated by a rotating molten metallic core, the atmosphere of such a planet would also face progressive erosion by the stellar wind of its host star.

Common solar flares manifest themselves when a magnetic field on the surface of a star collapses, releasing vast amounts of magnetic energy and stellar material that goes on to interact with satellite bodies such as our home planet.

There is also an interesting suite of anomalies associated with observations related to the solar magnetic field and stellar magnetic fields.

Heliophysics encompasses cosmic rays and particle acceleration, space weather and radiation, dust and magnetic reconnection, solar activity and stellar cycles, aeronomy and space plasmas, magnetic fields and global change, and the interactions of the solar system with our galaxy.»

Such proximity introduces hazards that are of negligible importance for life on Earth: increased exposure to (time - varying) short wavelength radiation, stronger magnetic fields, tidal effects, and atmospheric removal by the stellar wind.

In terms of climate it means that the energy coming into the earth - system is not only the solar radiation that «everyone» quotes, but also via light itself in the magnetic field, as well as via the polar Birkeland currents, and much like the stellar circuit proposed by Alven as reported in Parker, E. N., 2000, Physics Today, June issue p. 28, where the earth replaces the stellar object and the currents dropped down in density to dark current mode.