Electromagnetism news

Magnetic Pulses

Scientists have discovered previously undetected observational evidence of frequent energetic pulses transporting energy from the solar surface to the higher solar atmosphere. Magnetic plasma waves or pulses have long been suggested as one of the big mechanisms in order to explain why the temperature of the solar atmosphere rises quickly, from thousands to millions of degrees. These are short lived Alfven pulses which seem to be generated by photospheric plasma swirls. They are said to be at least as many as 150,000 of them in the solar photosphere at any given point in time.

Noctilucent Mystery

The prevalence of noctilucent clouds in June has sparked a lot of response from blog authors, mostly as a result of visiting http://spaceweather.com (post on June 19th 2019) ... which has the title 'mysterious moisture in the mesosphere' and its effects on noctilucent clouds. Their providence as far south as Los Angelese in California and Albuquerque in New Mexico (as well as repeated reports from Poland and Germany) make this year unusual to say the least.

Radio Emission Bridge

Interesting one at https://phys.org/news/2019-06-ridge-radio-emissions-galaxy-clusters.html ... an article in the journal Science by an international team describe how they found a ridge of radion emissions joining two galaxy clusters - a sort of bridge between the pair. Prior studies had shown that some galaxy clusters have magnetic fields - and the research was intent on seeing how this works.

Earth's Mantle is Magnetic

At https://tallbloke.wordpress.com/2019/06/07/Earths-mantle-is-magnetic-res... ... which is derived from www.upi.com/Science_News/2019/06/06/Earths-mantle-is-magnetic-researcher... ... most scientists have thought in terms of the Earth's magnetism powered by materials in the core or crust. A new study published in the journal Nature differs. Hematite, a common iron oxide, retains it magnetic qualities even at very high temperatures. Hence, the Mantle is magnetic as well. Unsettled science is action.

Air Glow

At http://spaceweather.com (June 2nd 2019) we have several days of reports of noctilucent clouds circling around the Arctic and providing photographers with a lot of images (which can be seen at the link). The circling process takes around 5 days as a result of a planetary wave that is driving the motion. Noctilucent clouds over Europe appear every time 5 days elapse. The noctilucent clouds are also expanding in size. The swirling is caused by a planetary wave, temperature and pressure that form in the atmosphere in response to Coriolis forces.

Northern Lights

Also sent in by William - https://www.yahoo.com/news/earths-magnetic-north-pole-shifting-101845338... ... the magnetic north pole is shifting. Scientists asked themselves, could this mean the northern lights will move with the magnetic pole. Apparently not. A recent study made a computer model of the aurora and the Earth's magnetic poles using data going back to 1965. It delivered the answer that rather than following the magnetic poles the aurora seems to keep in step with what is known as the geomagnetic poles.

Jupiter and the Eyes of the Storm

There are a couple of interesting posts at Thunderbolts - go to www.thunderbolts.info/wp/2019/05/05/the-eye-of-the-storm-part-2/ ... Jupiter is our largest neighbour and generates the largest electro-magnetic field in the solar system - apart from the Sun. It has a thick and turbulent atmosphere with swirling storms producing winds of supersonic speed and lightning arcs that are stupendously big in comparison to those on Earth. Jupiter also has contra flowing bands of wind - and the great red spot.

Naked Eye Red Sprites

This story is at http://spaceweather.com (30th April 2019) which could also have the title - how to look for sprites ...

That Black Hole Image

William has sent in a link to Thunderbolts - on the black hole image. Thunderbolts reply and claim the ring of lighyt with a dark centre, somewhat like a liquorice allsort, is in fact a plasmoid - not a black hole. Go to www,thunderbolts,info/wp/2019/04/black-hole/ ... which is one way of approaching the so called event horizon - a plasmoid captured ramping up charged particles, electrons spirally into the electromagnetic field giving off X-rays and radio emissions. It also makes sense for the galaxy to have the equivalent of the solar wind - but in a supermassive form.

Sun Spot Germination

At https://tallbloke.wordpress.com/2019/03/17/solar-tsunami-can-trigger-the... .... it begins by saying the next sun spot cycle can be expected to begin in 2020 according to The Hindu (see www.thehindu.com/sci-tech/solar-tsunami-can-trigger-the-sunspot-cycle/ar... ). It is thought the solar dynamics which produce electric and magnetic fields in the Sun is linked to the production of sun spots. What kick starts the 11 year sun spot cycle? A group of solar physicists suggest a solar tsunami is at work.