Subscribe free to our newsletters via your
. 24/7 Space News .

Scientists track solar 'tsunami' to measure sun's magnetic field
by Staff Writers
London (UPI) Jul 11, 2013

disclaimer: image is for illustration purposes only

British astrophysicists report they've used a solar "tsunami" observed by U.S. and Japanese spacecraft to measure the sun's magnetic field.

Solar tsunamis such as the one observed by NASA's Solar Dynamics Observatory and the Japanese Hinode spacecraft are produced by enormous explosions in the sun's atmosphere called coronal mass ejections that spew masses of particles into space while the tsunami travels across the sun at speeds of as much as 2,200 mph.

Researchers at University College London said tracking the tsunami across the sun's surface allowed them to make the first accurate estimates of the sun's magnetic field.

Visible as loops and other structures in the solar atmosphere, the sun's magnetic field is difficult to measure directly, they said, but imaging and spectral observations from the two spacecraft allowed them to examine both slow and rapid changes in the magnetic field and make estimates of its strength.

"We've demonstrated that the sun's atmosphere has a magnetic field about 10 times weaker than a normal fridge magnet," lead researcher David Long said in a UCL release Thursday.

"These are rare observations of a spectacular event that reveal some really interesting details about our nearest star," Long said of the solar tsunamis.


Related Links
Solar Science News at SpaceDaily

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Cluster spacecraft detects elusive space wind
Toulouse, France (SPX) Jul 04, 2013
A new study provides the first conclusive proof of the existence of a space wind first proposed theoretically over 20 years ago. By analysing data from the European Space Agency's Cluster spacecraft, researcher Iannis Dandouras detected this plasmaspheric wind, so-called because it contributes to the loss of material from the plasmasphere, a donut-shaped region extending above the Earth's atmosp ... read more

Scientist says Earth may once have been orbited by two moons

Dust hazard for Moon missions: scientists

NASA Seeks Information on Commercial Robotic Lunar Lander Capabilities

Orbiting astronaut controls robot on Earth, testing feasibility of CU-Boulder project on far side of the moon

DNA-sequencing chip could be sent to Mars to search for signs of life

Opportunity Making Progress Toward Solander Point

Mars Rover Curiosity Begins Trek Toward Mount Sharp

Science Team Outlines Goals for NASA's 2020 Mars Rover

NASA Selects Seven Projects for 2014 X-Hab Innovation Challenge

Space seeds could "benefit" traditional Chinese medicines

Kennedy Facilities Key to NASA's Transition

Voyager 1 Explores Final Frontier Of Our Solar Bubble

China's space tracking ship Yuanwang-5 berths at Jakarta for replenishment

China plans to launch Tiangong-2 space lab around 2015

Twilight for Tiangong

China calls for international cooperation in manned space program

Station Astronauts Complete First of Two July Spacewalks

Russia to go ahead with space freighter launch

ISS technology to 'hear' potential leaks

Russian cosmonauts conduct space station tasks in spacewalk

Special group to be set up for inspecting production of Proton-M carrier rockets

Two Rockets Launched From Wallops

Specialists unrelated to Khrunichev to check Proton-M rocket production

Proton Rocket to Stay in Demand Despite Accidents

Hubble Finds a Cobalt Blue Planet

Gaps in dust around stars may not indicate planets as many believe

Hubble Telescope reveals variation between hot extrasolar planet atmospheres

UCSB Astronomer Uncovers The Hidden Identity Of An Exoplanet

Cool it, quick: Rapid cooling leads to stronger alloys

Bioengineers Use Adhesion to Combine Silicones and Organic Materials

NASA's OPALS to Beam Data From Space Via Laser

Experts row over 'earliest' Chinese inscriptions find

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement