• Ionizációs terjedések

 #35002  Szerző: zvartoshu
Update - C-Class flare activity continues as a C3.7 flare took place 13:00 UTC Wednesday.

The largest Solar Flare of Cycle 24 thus far took place early Wednesday morning. It registered C5.3 on the flare scale. It is small in comparison to flares at solar max, however it is a good sign nonetheless. Click HERE for a movie of the flare.

A CME was associated with the C5.3 flare and an image is below. This may possibly produce Aurora by Friday when the CME arrives.

Sunspot 1035 is an impressive sunspot cluster consisting of around 20 spots. There will remain a chance for B-Class and perhaps more C-Class flares.

The solar flux reached 82 on Tuesday. The sunspot number of 38 is a new Cycle 24 record.

 #32406  Szerző: zvartoshu
It was indeed e-skip today towards East Europe !
I did switch on my TV in my lunch break, but didn't get signals here in the North-West. But TV-DX-guys in Central and Sounth Germany observed signals on TV from Russia and Estland !

Worth to read:,752777

 #30965  Szerző: zvartoshu
first big opening with a mirnor alert in ionosone measurement
 #30139  Szerző: zvartoshu
Updated 2009 Nov 03 2201 UTC

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 307 Issued at 2200Z on 03 Nov 2009

Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity was very low. The SOHO/LASCO imagery observed a slow coronal mass ejection (CME) off the southwest limb at 0501 UTC on 31 October. The CME appears to be earth directed with a plane-of sky speed of 380 km/s.

Solar Activity Forecast: Solar activity is expected to be low.

Geophysical Activity Summary 02/2100Z to 03/2100Z: Geomagnetic field was quiet.

Geophysical Activity Forecast: The geomagnetic field is expected to be quiet on day 1 (4 November). Unsettled conditions are expected on day 2 (5 November) due to possible effects from the CME observed on 31 October. Quiet levels are expected to return on day 3 (6 November). ... uPabvZPpAM ejefctions SW

IONOSFERE status : LOW protons in 1cm³

 #30055  Szerző: zvartoshu
NOT-SO-BLANK SUN: Today, the sunspot number is zero, which means the sun is blank, right? Wrong. This morning, NASA's STEREO-A spacecraft photographed sunspot 1029 seething with activity over the sun's western horizon:

Photo credit: STEREO Extreme Ultra Violet Telescope (195 A)

This impressive sunspot, which rotated over the sun's western limb three days ago, does not add to the sunspot number because it is no longer visible from Earth. Astronomers only count spots that are on the Earth-facing side of the sun. That's how it's been done since Rudolph Wolf invented the sunspot number in 1848. In those days, only one side of the sun was visible from Earth, so the tradition was established.

Now, however, for the first time in the history of astronomy, NASA's twin STEREO spacecraft are seeing over the sun's horizon, tracking sunspots that officially "don't count." The two spacecraft are moving toward opposite sides of the sun, and by February 2011 the entire sun will be under their watchful eyes. Perhaps it is time to start thinking about a "whole sun" sunspot number. As today's image shows, the sun is not always as blank as it appears to be.
 #28975  Szerző: zvartoshu
Sunspot 1029 has been fairly quiet since the C1.5 flare from the weekend. Only B-Class activity has taken place. There will remain a chance for C-Class flares on this night.

The solar flux reached 81.3 Monday night.

de la centrul de detectare MUF/sporadic al europei .. mail primit acum .23:53

This is the highest flux of Cycle 24 . Season e-skip reopen in this night at poor level in Europe and medium in sudden Africa
 #28856  Szerző: zvartoshu
wellcome in first ionization good in start solar cycle 24 !
In this night band 27/28mhz indicate a high performance opening .
Protons in atmosphere up contnous and today muf indicate a value 110mhz .
 #28781  Szerző: zvartoshu
new realization in picture, aurora + orionid meteor .. :D
 #28741  Szerző: zvartoshu
GEOMAGNETIC ACTIVITY: High-latitude sky watchers should be alert for Northern Lights. A sharp gust of solar wind hit Earth on Oct. 21st, and the Arctic Circle is still ringing with geomagnetic activity. "[We had a] stunning display of active auroras last night," reports Thomas Hagen, who sends this picture from Tromsø, Norway:


"The entire sky turned green and stayed green for much of the night," adds Fredrik Broms of Kvaløya, Norway.
The solar wind gust that sparked the display is interesting because it likely originated with a spotless explosion in the Sun's southern hemisphere on Oct. 17th: movie. The blast hurled a faint coronal mass ejection (CME) toward Earth. Normally, CMEs reach Earth in only 2 or 3 days, but this one took a leisurely 4 days to cross the Sun-Earth divide. Why so long? Since solar minimum began in ~2007, solar physicists have noticed that CMEs have been moving in slow motion. They take a long time to get here, and they don't hit very hard when they arrive. Nevertheless, this one managed to spark some nice auroras.