Archive

Posts Tagged ‘flares’

NASA Hosts Media Teleconference on Solar Flare Characteristics

September 2, 2011 Leave a comment

NASA will host a media teleconference at 1 p.m. EDT on Wednesday, Sept. 7, to discuss new observations about solar flares that can impact communication and navigation systems.

NASA’s Solar Dynamics Observatory, or SDO, is providing new data and images for scientists to better understand the sun’s dynamic processes, which can affect Earth. The spacecraft launched in February 2010.

Full Story: http://www.nasa.gov/home/hqnews/2011/sep/HQ_M11-183_SDO_Telecon.html

New Method Detects Emerging Sunspots Inside the Sun

August 19, 2011 Leave a comment

New Method Detects Emerging Sunspots Inside the Sun

A full disk image of the Sun showing the sunspot group in AR11158 after emergence, observed by SDO/HMI. Courtesy of NASA/SDO and the HMI science teams.

The first clear detection of emerging sunspot regions prior to any indication of the region in magnetograms was published in Science on 19 August 2011.

Sunspots, dark features in the solar photosphere with strong magnetic field, have been observed for more than 400 years. They are the most visible components of regions where solar flares and coronal mass ejections (CMEs) occur, and these eruptive events may cause power outages and interruptions of telecommunication and navigation services on the Earth. Although it is widely believed that sunspot regions are generated in the deep solar interior, the detection of these regions before they emerge from the convection zone into the photosphere has remained undetected until now.

Full Story: http://hmi.stanford.edu/Press/18Aug2011/