เหตุการณ์ใน-นอกโลก VS ภัยธรรมชาติ และupdate พายุสุริยะ

Plasma Vortex
Below is an awesome video capturing the C8.7 solar flare around Sunspot 1667. During the eruption, a blob of plasma above the blast site is captured spinning like a Tornado vortex. Most of us Sun lovers hope for X-Class solar flares, however even a C-Class flare can be fascinating. A slow motion version is also included.

[ame=http://www.youtube.com/watch?v=43pG76BDbqE&feature=player_embedded]Plasma Vortex / C8.7 Solar Flare (2/6/2013) - YouTube[/ame]

C8.7 Solar Flare
A solar flare nearing moderate levels (C8.7) was detected at 00:21 UTC early Wednesday morning. The source of the flare was Sunspot 1667. A Coronal Mass Ejection is associated with this event and a portion of the expanding cloud may be Earth directed. More information to follow. Image below by SDO.

ALERT: Type II Radio Emission
Begin Time: 2013 Feb 06 0013 UTC
Estimated Velocity: 548 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT: Type IV Radio Emission
Begin Time: 2013 Feb 06 0017 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.





ที่มา SOLARHAM.com / Solar Cycle 24 / Spaceweather / Amateur Radio VHF Aurora Website

 

EARTH-DIRECTED ERUPTION: The magnetic canopy of decaying sunspot AR1667 erupted this morning (Feb. 6th @ 00:21 UT), producing a C9-class solar flare and hurling a coronal mass ejection into space. According to first-look images from NASA's STEREO-B spacecraft, the CME appears to be heading in the general direction of Earth. If so, the likely time of arrival would be Feb. 8-9. Stay tuned for updated forecasts.

 

MAP 5.1 2013/02/07 00:41:32 1.425 98.935 82.8 NORTHERN SUMATRA, INDONESIA

 

DOUBLE ERUPTION (UPDATED): Sunspot AR1667 erupted this morning (Feb. 6th @ 00:21 UT), producing a double-peaked C9-class solar flare that lasted more than ten hours from beginning to end. The slowly-unfolding explosion also hurled two CMEs into space. The clouds are not heading directly for Earth, but they could deliver glancing blows to our planet's magnetic field on Feb. 9-10. High-latitude sky watchers should be alert for auroras this weekend.



A close-up of the blast site shows an inky-dark plume of plasma spiralling away from the explosion. The darkness of the material is a sign that it was extra-dense and cool relative to the surrounding atmosphere of the sun.

ที่มา SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

3 กุมภาพันธ์ เกิดปฏิกริยาดวงอาทิตย์ ในเวลา 9:55 UTC ส่งพลังงานความเร็วสูงออกไปทางทิศเหนือของโลก และพบปฏิกริยา X-ray ที่มากกว่าปกติ คาดว่าพลังงานดังกล่าวจะส่งผลกระทบต่อโลกในระหว่างวันที่ 6-8 กุมภาพันธ์ จากโมเดลพบว่าพลังงานจะเดินทางมายังโลกในวันที่ 7 กุมภาพันธ์ เวลา 12 UTC +/- 7 ชั่วโมง (ประมาณทุ่มนึง +/- 7 ชั่วโมง)

6 กุมภาพันธ์ เกิดพายุสุริยะขนาดใหญ่มีทิศทางมายังโลก ซึ่งจะส่งผลกระทบกับโลกในวันที่ 6 และ ระหว่างวันที่ 8-9 กุมภาพันธ์ ผู้ที่ทำงานด้านการแจ้งเตือนภัยพิบัติโปรดติดตามสถานการณ์อย่างใกล้ชิด update 7 กพ จากการคำนวณพบว่าพลังงานจะเดินทางมาถึงโลกในวันที่ 8 กุมภาพันธ์ เวลาประมาณ 8 UTC +/- 7 ชั่วโมง (ประมาณ บ่ายสามศุกร์ที่ 8 +/-7 ชั่วโมง)

ที่มา http://www.truth4thai.org/planetaryalignment/Feb_2013

แคคตัส

COMMENT: Four C-class flares were detected during last 24 hours. The C-class flares are possible, in particular from the Catania sunspot group 79 (NOAA AR 1667). The strongest observed flare was C8.7 flare peaking at 00:21 UT, on February 6. The long duration flare originated

from the Catania sunspot group 79 (NOAA AR 1667) and was associated with the type II radio burst and the CME. Due to the data gap it is not possible to determine when the CME first time appeared in the SOHO/LASCO C2 field of view. The C1.3 flare peaking at 03:16 UT on February 6, was associated with the partial halo CME. From the currently available data it seems that the CME was directed somewhat northward of the Sun-Earth line. Therefore, only arrival of a CME-driven shock at the Earth is expected. The additional information will be possible once the data are available. The interplanetary magnetic field magnitude is about 4 nT.

The solar wind speed is still low, having value of about 320 km/s. The fast flow from the small low-latitude coronal hole in the southern hemisphere might arrive on February 9. The fast flow associated with the low-latitude coronal hole in the northern hemisphere should arrive
today. We expect quiet to possibly active geomagnetic conditions in the next 48 hours.

 

"I took this image of Comet Lemmon on the 28th of January," says Olsen. "It has become quite bright now and has also grown a beautiful tail."

COMET LEMMON UPDATE: Glowing much brighter than expected, Comet Lemmon (C/2012 F6) is gliding through the skies of the southern hemisphere about 92 million miles (0.99 AU) from Earth. Amateur astronomer Rolf Wahl Olsen sends this picture from his backyard in Auckland, New Zealand:

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

 

NASA's Deep Impact Spacecraft Eyes Comet ISON



Feb. 5, 2013 — NASA's Deep Impact spacecraft has acquired its first images of comet C/2012 S1 (ISON). The images were taken by the spacecraft's Medium-Resolution Imager over a 36-hour period on Jan. 17 and 18, 2013, from a distance of 493 million miles (793 million kilometers). Many scientists anticipate a bright future for comet ISON; the spaceborne conglomeration of dust and ice may put on quite a show as it passes through the inner solar system this fall.

"This is the fourth comet on which we have performed science observations and the farthest point from Earth from which we've tried to transmit data on a comet," said Tim Larson, project manager for the Deep Impact spacecraft at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "The distance limits our bandwidth, so it's a little like communicating through a modem after being used to DSL. But we're going to coordinate our science collection and playback so we maximize our return on this potentially spectacular comet."

Deep Impact has executed close flybys of two comets -- Tempel 1 and Hartley 2 -- and performed scientific observations on two more -- comet Garradd and now ISON. The ISON imaging campaign is expected to yield infrared data, and light curves (which are used in defining the comet's rotation rate) in addition to visible-light images. A movie of comet ISON was generated from initial data acquired during this campaign. Preliminary results indicate that although the comet is still in the outer solar system, more than 474 million miles (763 million kilometers) from the sun, it is already active. As of Jan. 18, the tail extending from ISON's nucleus was already more than 40,000 miles (64,400 kilometers) long.
Long-period comets like ISON are thought to arrive from the solar system's Oort cloud, a giant spherical cloud of icy bodies surrounding our solar system so far away its outer edge is about a third of the way to the nearest star (other than our sun). Every once in a while, one of these loose conglomerations of ice, rock, dust and organic compounds is disturbed out of its established orbit in the Oort cloud by a passing star or the combined gravitational effects of the stars in the Milky Way galaxy. With these gravitational nudges, so begins a comet's eons-long, arching plunge toward the inner solar system.

ISON was discovered on Sept. 21, 2012, by two Russian astronomers using the International Scientific Optical Network's 16-inch (40-centimeter) telescope near Kislovodsk. NASA's Near-Earth Object Program Office, based at JPL, has plotted its orbit and determined that the comet is more than likely making it first-ever sweep through the inner solar system. Having not come this way before means the comet's pristine surface has a higher probability of being laden with volatile material just spoiling for some of the sun's energy to heat it up and help it escape. With the exodus of these clean ices could come a boatload of dust, held in check since the beginnings of our solar system. This released gas and dust is what is seen on Earth as comprising a comet's atmosphere (coma) and tail.

ISON will not be a threat to Earth -- getting no closer to Earth than about 40 million miles on Dec. 26, 2013. But stargazers will have an opportunity to view the comet's head and tail before and after its closest approach to the sun -- if the comet doesn't fade early or break up before reaching the sun.

Launched in January 2005, NASA's Deep Impact spacecraft traveled about 268 million miles (431 million kilometers) to the vicinity of comet Tempel 1. On July 3, 2005, the spacecraft deployed an impactor that was essentially "run over" by the nucleus of Tempel 1 on July 4. Sixteen days after comet encounter, the Deep Impact team placed the spacecraft on a trajectory to fly past Earth in late December 2007. This extended mission of the Deep Impact spacecraft culminated in the successful flyby of comet Hartley 2 on Nov. 4, 2010. In January of 2012, the spacecraft performed, from a distance, an imaging campaign on comet C/2009 P1 (Garradd).
To date, Deep Impact has traveled about 4.39 billion miles (7.06 billion kilometers) in space.

JPL, a division of the California Institute of Technology in Pasadena, manages the Deep Impact mission for NASA's Science Mission Directorate, Washington. The mission is part of the Discovery Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. The spacecraft was built for NASA by Ball Aerospace & Technologies Corp., Boulder, Colo.

For more information about Deep Impact, visit: http://solarsystem.nasa.gov/deepimpact .

 

Coronal Holes: 06 Feb 13
Solar wind flowing from this coronal holes could brush against Earth's magnetic field on Feb. 8-9. Credit: SDO/AIA.

 

จริงๆ เหตุผลหนึ่งที่เอาข้อมูลเก็บไว้ในกระทู้นี้ เพราะจะได้เอาเป็นตัวไปเทียบกับเหตุการณ์ที่เกิดขึ้น (บางทีแปะๆ ไว้โดยไม่ได้อธิบายออะไรไว้) ถ้าคนติดตาม จะสังเกตเห็นความสัมพันธ์กัน

 

Coronal Holes: 07 Feb 13



Solar wind flowing from this coronal holes could brush against Earth's magnetic field on Feb. 8-9. Credit: SDO/AIA.