Posts Tagged ‘Solar Dynamics Observatory’

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Lots of Solar flares

October 22, 2014

What’s up in space

During the past 48 hours, monster sunspot AR2192 has unleashed seven M-class solar flares. The most powerful of the bunch (Oct 22nd at 0159 UT) was an M9-class eruption that almost crossed the threshold into X-territory. NASA’s Solar Dynamics Observatory recorded the extreme ultraviolet flash:

m9_strip2

UV radiation from the flare ionized Earth’s upper atmosphere, causing a brief blackout of HF radio communications on the dayside of Earth (e.g., parts of Asia and Australia). In addition, the explosion might have hurled a CME into space. Confirmation awaits the arrival of coronagraph data from the Solar and Heliospheric Observatory (SOHO). Stay tuned for updates.

More flares are in the offing. AR2192 has an unstable ‘beta-gamma-delta’ magnetic field that harbors energy for powerful explosions. NOAA forecasters estimate at 65% chance of M-class flares and a 20% chance of X-flares on Oct. 22nd.

*Sunset Solar Eclipse

Oct 17, 2014: Sunsets are always pretty. One sunset this month could be out of this world. On Thursday, Oct. 23rd, the setting sun across eastern parts of the USA will be red, beautiful and … crescent-shaped.

“It’s a partial solar eclipse,” explains longtime NASA eclipse expert Fred Espenak. In other words, the New Moon is going to ‘take a bite’ out of the sun.

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X-flare directed at Earth

September 11, 2014

What’s up in space

X-FLARE: Earth-orbiting satellites have just detected a powerful X1.6-class solar flare (Sept. 10 @ 17:46 UT). The source was active sunspot AR2158, which is directly facing Earth. NASA’s Solar Dynamics Observatory recorded the extreme ultraviolet flash:

xflare_strip

Ionizing radiation from the flare could cause HF radio blackouts and other communications disturbances, especially on the day-lit side of Earth. In the next few hours, when coronagraph data from SOHO and STEREO become available, we will see if a CME emerges from the blast site. If so, the cloud would likely be aimed directly at Earth and could reach our planet in 2 to 3 days.

Looks like a Heart to me…

(Thanks @Dr. John!)

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The Bouncy Solar Dynamics Observatory

April 19, 2012

4/18/2012 — Please fasten your SDO seatbelts — possible ‘turbulence’ ahead

Regardless of what is causing it — we see the spacecraft camera make a turbulent move to the left right up down and diagonal. Then come back to the original point it started.

I can’t find any description on the SDO site of what is occurring. If you find anything , please put it down below this video in the comment field.

Uploaded by dutchsinse on 18 apr 2012

*SDO site

Maneuvers and Images

Thu, 19 Apr 2012

Last Wednesday and yesterday (April 11 and 18, 2012) we performed several spacecraft maneuvers to help calibrate our instruments. On April 4 we did an EVE cruciform and an AIA bakeout. This means the Sun moves back and forth and up and down. AIA images may be noisy (because the CCDs were warmed up to reduce contamination) and the Sun absent during this maneuver. HMI images may not show the Sun, or show it whizzing by as SDO moves.

On April 18 SDO did an EVE field of view and HMI flatfield maneuver.

While we do these maneuvers the data may be unavailable but by doing these maneuvers we keep the instruments healthy.

*Large explosion seen on the Sun’s northeastern limb

April 17, 2012 – SPACE – Magnetic fields on the Sun’s northeastern limb erupted around 17:45 UT on April 16th, producing one of the most visually-spectacular explosions in years. NASA’s Solar Dynamics Observatory (SDO) recorded the blast at extreme ultraviolet wavelengths. The explosion, which registered M1.7 on the Richter scale of solar flares, was not Earth-directed, but it did hurl a CME into space. Analysts at the Goddard Space Weather Lab have analyzed the trajectory of the cloud and found that it will hit NASA’s STEREO-B spacecraft, the Spitzer space telescope, and the rover Curiosity en route to Mars. Planets Venus and Mars could also receive a glancing blow. –Space Weather

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