2017: 'Magnetic cavities in solar wind as natural tokamaks', by Dr. Olga Khabarova, 12 July 2017 ppt talk .

 

2017: The discovery of electron beam effects on formation of H-alpha ribbons in solar flares:

  Publication in Nature Communications, 2017, 8,Article number: 15905 (2017) doi:10.1038/ncomms15905 .

 

2016: Further media response to the discovery of double dynamo waves:

 

"The winter is coming" including this U-tube clip .

 

2015: Extended press-release - solar activity is approaching Maunder Minimum in 2020-2055!

 

Publication in Nature Scientific Reports, 2015, 29 October, 15689 .

 

Presentation at the National Astronomy Meeting, 2015, Landudno with the links to wide media coverage.

 

2014: New Project - for the attention of undergarduate students !

 

PhD studentship with the Northumbria University Bursary is available for UK and EU students from October 2014 or soon after on mutual agreement http://www.findaphd.com/search/ProjectDetails.aspx?PJID=53687&LID=2317.

 

The studentship includes stipend covering living and accommodation expenses and UK student tuition fees for 3 years.

 

Contact with application or inquiry Prof. Valentina Zharkova on tel. 0191 243 7943, email: valentina.zharkova@northumbria.ac.uk.

 

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1. Royal Society International Joint Projects 2008/R4 - Shared cost with Russian Foundation for Basic Research

Multi-wavelength diagnostics of energy release and transport in solar flares,  rewarded in May 2009 for 2 years.

participants: University of Bradford, UK (PI  - Prof. V.V. Zharkova) and SibIZMIR, Irkutsk, Russia (PI - A. Altyntsev) .

 

2. Solar storms to be examined in new STFC grant

In April 2007 a Bradford professor has received over £167,805 to study the storms that occur in the atmosphere of the Sun and how they affect life on Earth.

Valentina Zharkova, Professor of Applied Mathematics in the University’s School of Informatics, has received a two-year research grant from the Science, Technology and Facilities Council (STFC) (former Particle Physics and Astronomy Research Council - PPARC), the first award of its kind for the University of Bradford from this funding council, for a project entitled Proton and Electron Kinetics and Dynamics in Flaring Atmospheres.

It will allow her to investigate proton and electron acceleration and transport into flaring atmospheres with a converging magnetic field using the Bradford theory http://kinetics.inf.brad.ac.uk/ and their appearance in hard X-ray, gamma-ray, radio and optical emission (see image below).

Proton and electron acceleration and transport into flaring atmospheres with a converging magnetic field and their appearance in hard X-ray, gamma-ray, radio and optical emission.

Particularly, she will be interested in the conditions that produce solar quakes on the surface of the Sun (or photosphere), which were discovered in 1998 by her and Stanford University research scientist Dr. Alexander G. Kosovichev (See figure below).

Conditions that produce solar quakes on the surface of the Sun (or photosphere).

"The solar quake we recorded in 1998 looked much like the ripples that spread when a rock is dropped into a pool of water," added Professor Zharkova. “The difference is that the solar flare explodes in a space above the Sun's surface and then generates high energy particles transporting them into the deep photosphere, leading to a major seismic wave in the Sun's interior."

"However, over the course of an hour the solar waves travelled for a distance equal to 10 times the Earth’s diameter before fading into the fiery background of the Sun's photosphere. Unlike water ripples that travel outward at a constant velocity, the solar waves accelerated from an initial speed of 22,000 miles per hour to a maximum of 250,000 miles per hour before disappearing."

"The waves contained enough energy to make the solar quake measure 15 on the Richter scale, which gives you an idea of its power as we only measure up to level 10 on Earth. The amount of energy released was enough to power the United States for 20 years at its current level!"

Professor Zharkova explained: "We will be investigating a variety of solar flares and the mechanisms of their energy release, their transport into deeper atmospheric levels leading, on one hand, to solar quakes and, on the other hand, to geomagnetic disturbances affecting the human lives."

"Very often these flares are so powerful that they travel through interplanetary space and affect the Earth’s magnetosphere and climate, leading to geomagnetic storms and often observed auroras, or even to power station discharges observed in 1989 for the whole province of Canada, or the infamous 2 Japanese communication satellite failure caused the Halloween flare on the 28 October 2003." (See figure below).

Solar flares.