RADIOSITE Fórum

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 #38149  Szerző: zvartoshu
 2010.01.20. 14:15
Space weather for the next 24 hours is expected to be minor.
Radio blackouts reaching the R1 level are expected.
 #38137  Szerző: zvartoshu
 2010.01.20. 11:42
Yesterday's M2-class solar flare bathed Earth's upper atmosphere in X-rays and caused a wave of ionization to sweep over Europe. This actually improved the propagation of low-frequency radio signals, which use the ionosphere as a reflector to skip over the horizon. A SID monitor operated by Rudolf Slosiar in Bojnice, Slovakia, recorded the surge in signal strength:
 #38134  Szerző: zvartoshu
 2010.01.20. 11:02
In this day M1.1 class flare continue with multiple activity and luminance ..
This M-class add SWX . solar weather .. a minor storm R1 - value changed to : 10-5W/m²

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 #38111  Szerző: zvartoshu
 2010.01.19. 23:05
SOLAR FLARES: Today, Jan. 19th at 1340 UT, Earth-orbiting satellites detected the strongest solar flare in almost two years. The M2-class eruption came from old sunspot 1039, currently located behind the sun's eastern limb. NASA's STEREO-B spacecraft recorded this extreme ultraviolet movie of the blast:
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Considering the fact that the sunspot is not even visible from Earth, the flare was probably much stronger than its M2 classification would suggest. This active region has produced at least three significant eruptions since Jan. 17th (including this notable flare) and it is showing no signs of cooling off.

At the moment only STEREO-B, stationed over the east limb, can monitor the active region directly. Soon, this will change. The sun's rotation is turning sunspot 1039 toward Earth and it should emerge for direct viewing within the next 48 hours. Readers with solar telescopes are encouraged to monitor the east limb for developments.
 #37982  Szerző: zvartoshu
 2010.01.19. 16:58
first solar tsunami in M2.3 flare
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 #37312  Szerző: zvartoshu
 2010.01.13. 10:44
Updated 2010 Jan 12 2201 UTC

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 012 Issued at 2200Z on 12 Jan 2010

Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity was low. Region 1040 (N28W04) produced a C1.1 flare at 1320Z along with numerous B-class flares. Region 1040 showed little change in areal coverage (300 millionths) and was classified as an Eao-beta group with 25 spots.

Solar Activity Forecast: Solar activity is expected to be very low to low. There is a slight chance Region 1040 could produce an isolated M-class flare.
 #37300  Szerző: zvartoshu
 2010.01.12. 23:15
C-Flare - At 13:20 UTC a small C1.1 solar flare took place.

Solar Update - Sunspot 1040 remains a fairly large sunspot group and there remains slight chance for an M-Class flare. The Solar X-Ray Flux background levels are in the B-Class territory and holding steady.

The solar flux reached a daily max of 95.4 on Tuesday and ended with an average of 93 which is yet another new record for Cycle 24.
 #37245  Szerző: zvartoshu
 2010.01.12. 09:56
01/12/2010 by Kevin VE3EN at 03:30
Comment on Message Board

Solar Update - Sunspot 1040 remains a fairly large sunspot group and there remains slight chance for an M-Class flare. The Solar X-Ray Flux background levels are in the B-Class territory and holding steady.

The solar flux reached a daily max of 90.8 on Monday and ended with an average of 89 which is a new record for Cycle 24.

Solar Wind

Sunspot 1040 (Monday)
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Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field was quiet to unsettled. Solar wind observations from the ACE spacecraft indicated the onset of a co-rotating interaction region around 11/0844Z. Solar wind velocity increased from around 357 km/s to a max of 542 km/s at around 11/1540Z. The interplanetary magnetic field (IMF) activity showed an enhancement of total field of 14 nT, and the southern component of the IMF ranged between +10 nT and -9 nT.

Geophysical Activity Forecast: The geomagnetic field is expected to be quiet, with isolated unsettled levels for the next two days (12-13 January) due to a coronal hole high-speed stream. Quiet levels are expected on day three (14 January).

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Latest Solar Wind Values
Created: 2010 Jan 12 0853 UTC
Magnetic Field
(Based on GSM coordinates) Plasma
Total Field, B : 2.0 nT Speed, V : 473.6 km s-1
Field in x-direction, Bx : -1.2 nT Temperature, T : 68597.9 k
Field in y-direction, By : -1.4 nT Density, n : 2.4 particles cm-3
Field in z-direction, Bz : -0.8 nT Pressure, P : 0.9 nPa
Latitude angle, beta : -23.5°
Angle, theta : 113.5°

# Flux solar = 89

# A = 8 INSTABIL

# K = 2
 #35895  Szerző: zvartoshu
 2009.12.28. 10:12
SIGNS OF LIFE ON THE SUN: 2009 is ending with a flurry of sunspots. So far this month, the visible disk of the sun has had spots 67% of the time, a sharp increase compared to the annual average. Furthermore, all six of December's sunspot groups have been members of new Solar Cycle 24. These numbers could herald the sun's awakening from the deepest solar minimum in nearly a century and a livelier sun in 2010.

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