Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

UK and Polish team to observe the Sun’s atmosphere from Libya during 29 March eclipse

28.03.2006


A team of three scientists and engineers from the Mullard Space Science Laboratory, UK, and the Astronomical Institute of the University of Wroclaw, Poland, are travelling to Libya to observe the total eclipse of the Sun on March 29th 2006. They will be using an instrument designed to understand why the Sun’s outer atmosphere is so hot.

The solar atmosphere or corona, which is normally only visible from the Earth at times of total solar eclipses, has a temperature of 1—2 million degrees Celsius. The corona also emits ultraviolet and X-ray radiation, which has been observed with spacecraft such as the ESA/NASA Solar and Heliospheric Observatory (SOHO). But despite more than 60 years of study, the heating mechanism of the corona remains unknown.

The instrument used by the Anglo-Polish team, the Solar Eclipse Coronal Imaging System (SECIS), consists of a double telescope on a driven mount with fast-frame electronic cameras that will form images of the corona during eclipse totality at the rate of 40 frames per second. This is far higher than can be accomplished with spacecraft instrumentation because of telemetry restrictions.



The aim is to search for subtle oscillations in the corona’s light intensity - tell-tale signs of heating by magnetic waves, thought by many to be the main heating mechanism on local scales. The oscillations are likely to have periods of a few seconds or less.

Previous observations with SECIS have been successfully made during the total solar eclipses in 1999 (Bulgaria) and 2001 (Zambia), with 12,000 and 16,000 images of the solar corona captured during the few-minute period of totality in each case. Analysis of the 1999 eclipse data suggests an intriguing possibility of a wave travelling along part of the corona.

The present expedition to Libya by the Anglo-Polish team with SECIS will obtain about 10,000 images in the slightly more than 4 minutes of totality. The solar corona should be a little dimmer than in 1999 and 2001, and have a different form as the Sun is now at sunspot minimum – the brightness and shape alter with the 11-year sunspot cycle.

The Anglo-Polish team are going out at the kind invitation of The Planetary Society (Mr Andy Lound, UK Coordinator) and The British Council (Libya), and they are forming a part of the Operation Eratosthenes 2 Expedition which involves a lecture tour in Libya. The observing site is at Jalu, an oasis about 350 km south of Benghazi. The team consists of Dr Pawel Rudawy, Dr Ken Phillips, and Dr Adam Buczylko.

Anita Heward | alfa
Further information:
http://www.mssl.ucl.ac.uk

More articles from Physics and Astronomy:

nachricht Breakthrough with a chain of gold atoms
17.02.2017 | Universität Konstanz

nachricht New functional principle to generate the „third harmonic“
16.02.2017 | Laser Zentrum Hannover e.V.

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Switched-on DNA

20.02.2017 | Materials Sciences

Second cause of hidden hearing loss identified

20.02.2017 | Health and Medicine

Prospect for more effective treatment of nerve pain

20.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>