Sentences with phrase «magnetic activity»

It appears more than likely that climate change is controlled by variations in solar magnetic activity and by periodic changes in ocean circulation.

One possible reason for the drop off in magnetic energy is that the reduction in magnetic activity mirrors a greater decrease in the rate of spin of older stars compared to their younger counterparts.

On magnetic activity band overlap, interaction, and the formation of complex solar active regions.

Without interference, sensors would register the increased magnetic activity.

During solar minimum, which is when the upcoming eclipse will occur, there is more magnetic activity at the sun's equator and poles.

By raising organisms in an environment with very little magnetic activity, researchers may be able to discern whether use of such fields is a learned or an innate trait.

Surprisingly, based on discoveries since 2001, it now appears that radio - emitting magnetic activity may actually become more common in these very low - mass objects.

The findings found increased incidents of RA and GCA to be in periodic concert with the cycle of magnetic activity of the sun.

Such sunspots are an indication of intense magnetic activity on the sun, including solar flares.

For Sun - like stars with magnetic activity levels similar to the Sun, one should be very careful with such analysis.

These dark blots mottle the face of the sun, increasing in number to a peak every 11 years and then falling off again in a rhythmic march choreographed by magnetic activity inside the star.

Similar flare rates were calculated by Maehara et al. 15 and Shibayama et al. 16 using rotation instead of chromospheric emission as the criterion for selecting Sun - like stars with magnetic activity levels similar to the Sun.

In addition, I will also present the first results of my postdoctoral stay at the University of Western Ontario: a search for H - alpha emission in ultra-cool dwarfs to seek a correlation between magnetic activity and photometric variability.

While there has not been great resistance to Eddy's arguments for a lull in solar magnetic activity during the Maunder Minimum, one of the main reasons why his ideas caught the imagination is more contentious.

This twisting action gives rise to the solar dynamo and an 11 - year solar cycle of magnetic activity as the Sun's magnetic field reverses itself about every 11 years.

Basri has worked on stellar magnetic activity and low mass stars (including the sun) throughout his career, and has been an active user of the Lick and Keck Observatories as well as a number of space telescopes.

Title: The Physics and Chemistry of Brown Dwarf Clouds: Results from HST and Spitzer Phase Mapping Programs Abstract: Many Sun - like stars exhibit cyclical magnetic activity.

«It's possible this hot Jupiter is keeping the star's rotation and magnetic activity high because of tidal forces, making it behave in some ways like a much younger star.»

Weaker magnetic activity on the Sun means less ozone which means a weaker jet stream which means it meanders more, bringing cold air south in some places.

Solar physicists believe that waxing and waning magnetic activity within the sun drives the solar cycle, but they do not know why the cycle occurs.

«We think magnetic activity plays an important role,» Hamaguchi says, with temperatures reaching 40,000,000 to 50,000,000 °C.

The sun's magnetic activity waxes and wanes roughly every 11 years, generating more dark sunspots at the peak of the cycle and fewer at the trough.

The world's aurora, reported in Nature in July as about a million times brighter than Earth's, suggests that brown dwarfs have magnetic activity more like planets than stars.

Sunspots form when magnetic activity creates areas on the solar surface that are temporarily cooler and darker than normal, affecting the Sun's overall brightness.

Gilliland suspects that such magnetic activity is higher among the Sun - like stars in the Kepler field than in the Sun itself, probably because they are younger.

These dark patches of concentrated magnetic activity are dynamic, variegated features that solar physicists have long tried to understand in detail.

Every 11 years or so, the sun's magnetic activity peaks and then troughs, resulting in relatively high and then low numbers of dark spots and flares on the solar surface.

The day of the failed eruption, scientists pointed the VAULT2.0 sounding rocket — a sub-orbital rocket that flies for some 20 minutes, collecting data from above Earth's atmosphere for about five of those minutes — at an area of intense, complex magnetic activity on the Sun, called an active region.

In August European and American researchers used seismological data from the Corot telescope (similar in concept to Kepler) to study magnetic activity on a distant sunlike star, an achievement that could provide insights into the poorly understood dynamo that drives our sun's 11 - year activity cycle.

This is because their intense magnetic activity interferes with the light emitted by the star to a far greater extent than a potential giant planet, even in a close orbit.

And there is no indication that it is accreting material from a companion star, no suggestion of anomalous magnetic activity, and no reason to think it might be young and still forming — all phenomena that could rapidly alter its brightness.

Astronomers have spied magnetic activity surrounding a massive young star in the Orion Nebula (inset), a hot spot of such activity in the Milky Way.

But these rocks are difficult to analyse because they were re-heated around 2.6 billion years ago, which left a record of magnetic activity then that partially overlaid older evidence.

(A sunspot is a dark patch on the sun that marks a region of elevated magnetic activity.)

A study of the Sun using sound waves suggests that the layer in which the significant magnetic activity is located has grown thinner in recent years.

Astronomers have indirectly detected magnetic activity associated with other stars.

Very low mass stars and brown dwarfs are cool enough to kill magnetic activity (but not the fields), leaving them very rapid rotators.

Add into the mix the fact that M - dwarfs can maintain high levels of magnetic activity for billions of years.

The number of sunspots varies as solar magnetic activity does — the change in this number, from a minimum of none to a maximum of roughly 250 sunspots or clusters of sunspots and then back to a minimum, is known as the solar cycle, and averages about 11 years long.

Sunspots are regions of intense magnetic activity where energy transport is inhibited by strong magnetic fields.

(b) Observational study of space weather using the Solar Magnetic Activity Research Telescope (SMART) and the international ground - based solar observation network (CHAIN).

Current research foci include the magnetized solar atmosphere, global magnetic activity in the sun and stars, and high resolution techniques.

There is no room for complacency, Svalgaard warns: «If the Earth does cool during the next sunspot crash and we do nothing, when the sun's magnetic activity returns, global warming will return with a vengeance.»

The 20th century warming may have been caused by the increased solar magnetic activity which may reduce low cloud cover, decreasing sulphate aerosols (which reflect sunlight) due to pollution controls and changes to ocean cycles.