스크랩 관련정보 the Prominence erupt!!

[havona]

 

An erupting prominence observed by SDO on March 30, 2010. The 29 MB movie takes a while to download, but it is worth the wait. A high-res still frame is also available.

Credit: SDO/AIA

"We've seen solar prominences before—but never quite like this," says Alan Title of Lockheed Martin, principal investigator of the Atmospheric Imaging Assembly (AIA), the observatory's main telescope array. "Some of my colleagues say they've learned new things about prominences just by watching this one movie."

SDO is the first mission of NASA's Living with a Star (LWS) program. The goal of LWS is to understand the sun as a magnetic variable star and to measure its impact on life and society on Earth. Program scientist Lika Guhathakurta of NASA headquarters envisions big things for the new observatory:

"SDO is our 'Hubble for the sun'," she says. "It promises to transform solar physics in the same way the Hubble Space Telescope has transformed astronomy and cosmology."

"No solar telescope has ever come close to the combined spatial, temporal and spectral resolution of SDO," adds Title. "This is possible because of the combination of 4096 x 4096-pixel CCDs with huge dynamic range and a geosynchronous orbit which allows SDO to observe the sun and communicate with the ground around the clock."

A full-disk multiwavelength extreme ultraviolet image of the sun taken by SDO on March 30, 2010. False colors trace different gas temperatures. Reds are relatively cool (~60,000 K); blues and greens are hotter (> 1,000,000 K). [full-resolution image]

Credit: SDO/AIA

One of the most amazing things about the observatory is its "big picture" view. SDO is able to monitor not just one small patch of sun, but rather the whole thing--full disk, atmosphere, surface, and even interior. "We're going to make connections that were impossible in the past," says Title.

As an example he offers the events of April 8th:

With SDO looking on, decaying sunspot 1060 unleashed a minor "B3-class" solar flare. A shock wave issued from the blast site and raced across the surface of the sun (movie). SDO images clearly show magnetic loops and other structures rocking back and forth when the wave passes over them. Eventually, the wave disappeared over the sun's horizon--but the show wasn't over. Four hours after the initial blast, and some 200,000 km away, a massive prominence erupted (image).

Coincidence? Not according to Title.

"As the wave swept across the surface of the sun, it de-stabilized magnetic fields it encountered en route. I believe the magnetic underpinnings of the prominence were upset by the wave, and this led to the eruption."

A seemingly insignificant B-flare triggered a massive prominence eruption halfway across the sun. This is the sort of unexpected connection that, when fully understood, could lead to big advances in space weather forecasting.

On April 8th this active region unleashed a B3-class solar flare. Click on the image to view an 8 MB movie of the flare and the subsequent shock wave that went rippling through the sun's atmosphere.

Credit: SDO/AIA

So far, SDO's prettiest pictures have come from the bank of telescopes called AIA. Other instruments on the spacecraft are working just as well—and they promise similarly exciting results.

"The Helioseismic Magnetic Imager (HMI) is performing splendidly," reports HMI principal investigator Phil Scherrer of Stanford University. "We're getting very high-quality, high signal-to-noise data."

HMI is designed to look inside the sun using a technique called helioseismology. Just as geologists use seismic waves to map the interior of our planet, solar physicists can use acoustic waves to map the interior of our star. On the sun, acoustic waves are generated by the sun's own internal motions. HMI detects the waves pulling the sun's surface back and forth, revealing indirectly what lies within.

"We're processing the data now," says Scherrer, "and soon we expect to have some nice maps of the sun's interior."

In addition to mapping the solar interior, the Helioseismic Magnetic Imager can also map magnetic fields on the sun's surface. This bipolar sunspot was observed by HMI on March 29th. White and black trace opposite magnetic polarities. The sunspot's main core (white) is about the size of Earth. [2 MB movie]

Credit: SDO/HMI

The Extreme UV Variability Experiment (EVE) is online, too, "and we're getting great data as well,"

An erupting prominence observed by SDO on March 30, 2010. False colors trace different plasma temperatures. Red is relatively cool (60,000 K); green and yellow are hotter (1,400,000 - 2,200,000 K). [15 MB movie]

출처 _ nasa science

[가브리엘]

초록이 짙은 청록색의 태양을 지구 내부의 용암처럼 칼라 색칠을 해서 보여주는군요 nasa 에서.. ㅎㅎ

확실히 태양은 청록색입니다. 뿜어져나오는 용암처럼 보이는것은 청색의 태양 오로라입니다.

뜨겁게보이는 태양은 청록색이며 차갑고 기온이 낮은 상태입니다.

[havona]

설명 잘들었습니다.
사실 제대로 이해못했거든요.^^