NASA sees activity continue on the sun

Public release date: 15-May-2013
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Contact: Susan Hendrix
Susan.m.hendrix@nasa.gov
301-286-7745
NASA/Goddard Space Flight Center

Solar activity continued on May 14, 2013, as the sun emitted a fourth X-class flare from its upper left limb, peaking at 9:48 p.m. EDT.

This flare is classified as an X1.2 flare and it is the 18th X-class flare of the current solar cycle. The flare caused a radio blackout categorized as an R3, or strong, on NOAA's space weather scales from R1 to R5 -- which has since subsided.

The flare was also associated with a non-Earth-directed CME. CMEs and flares are separate but related solar phenomena: solar flares are powerful bursts that send light and radiation into space; CMEs erupt with billions of tons of solar material. They often, but do not always, occur together. Any time we can see a solar flare from Earth's view, than at least some of its light and radiation must be directed at Earth. CMEs on the other hand may or may not be Earth directed. NASA observes CMEs, however, even when they are not traveling toward Earth, because they may impact spacecraft.

NASA's Solar Dynamics Observatory captured an image of the X1.2 class solar flare on May 14, 2013.

Experimental NASA research models show that this CME left the sun at around 745 miles per second, beginning at 10:18 p.m. EDT. It is not Earth-directed, however it may pass the Spitzer and Epoxi orbits, and their mission operators have been notified. If warranted, operators can put spacecraft into safe mode to protect the instruments from solar material.

Updates will be posted as necessary.

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NOAA's Space Weather Prediction Center is the U.S. government's official source for space weather forecasts, alerts, watches and warnings.

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AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.

Public release date: 15-May-2013
[ | E-mail | Share ]

Contact: Susan Hendrix
Susan.m.hendrix@nasa.gov
301-286-7745
NASA/Goddard Space Flight Center

Solar activity continued on May 14, 2013, as the sun emitted a fourth X-class flare from its upper left limb, peaking at 9:48 p.m. EDT.

This flare is classified as an X1.2 flare and it is the 18th X-class flare of the current solar cycle. The flare caused a radio blackout categorized as an R3, or strong, on NOAA's space weather scales from R1 to R5 -- which has since subsided.

The flare was also associated with a non-Earth-directed CME. CMEs and flares are separate but related solar phenomena: solar flares are powerful bursts that send light and radiation into space; CMEs erupt with billions of tons of solar material. They often, but do not always, occur together. Any time we can see a solar flare from Earth's view, than at least some of its light and radiation must be directed at Earth. CMEs on the other hand may or may not be Earth directed. NASA observes CMEs, however, even when they are not traveling toward Earth, because they may impact spacecraft.

NASA's Solar Dynamics Observatory captured an image of the X1.2 class solar flare on May 14, 2013.

Experimental NASA research models show that this CME left the sun at around 745 miles per second, beginning at 10:18 p.m. EDT. It is not Earth-directed, however it may pass the Spitzer and Epoxi orbits, and their mission operators have been notified. If warranted, operators can put spacecraft into safe mode to protect the instruments from solar material.

Updates will be posted as necessary.

###

NOAA's Space Weather Prediction Center is the U.S. government's official source for space weather forecasts, alerts, watches and warnings.

---

[ | E-mail | Share ]

?

AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.

Source: http://www.eurekalert.org/pub_releases/2013-05/nsfc-nsa051513.php

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