Zonnevlammen: de meter voor rampen en bewustzijns sprongen

[univers]

July 15, 2015 @ 12:45 UTC
Quiet Times
Good morning. Here is an updated look at the visible solar disk on Wednesday. Solar activity is at very low levels with no noteworthy solar flares to report. What remains of region 2381 is now turning onto the west limb and out of direct Earth view. A new sunspot is turning into view off the east limb and so far appears to be stable. We will get a better look at it during the next day or so. Geomagnetic activity is also at quieter levels with no storming currently in the forecast. Stay tuned to SolarHam.com for the latest spaceweather data and imagery.


http://www.solarham.net/regions/regions_jul15.jpg

http://www.solarham.net/

[univers]

http://www.nasa.gov/image-feature/stere ... of-the-sun

[univers]

July 17, 2015 @ 12:30 UTC
The Quiet Continues
Good morning folks. Here is an updated look at the visible solar disk on Friday. Solar activity continues at very low levels with no noteworthy solar flares to report. Region 2387 did show minor growth during the past day and could produce isolated C-Flares. All other numbered regions remain quiet. No Earth directed coronal mass ejections were observed during the past day. Stay tuned to SolarHam.com for the latest information.


http://www.solarham.net/regions/regions_jul17.jpg

http://www.solarham.net/

[univers]

July 20, 2015 @ 13:40 UTC
Solar Update
Hello again folks. Below is an updated look at the visible solar disk on Monday. Sounding like a broken record, solar activity is at very low levels this morning. Region 2387 did show minor growth during the past day, but was otherwise very stable. No Earth directed coronal mass ejections were detected during the past day. Geomagnetic activity also remains at quiet levels with no storming currently in the forecast. Stay tuned to SolarHam.com for the most up to date spaceweather data and imagery.

http://www.solarham.net/regions/regions_jul20.jpg

http://www.solarham.net/

[univers]

July 22, 2015 @ 13:45 UTC
Oh So Quiet
Good morning. Below is a look at the not so active Earth facing side of the sun on Wednesday. Both numbered regions are quiet and non threatening. No Earth directed coronal mass ejections were observed during the past day.
So what can we expect in terms of solar activity during the upcoming months and years? A look at the smoothed solar flux and sunspot data will tell us that we are now exiting the second peak of the current solar cycle 24 and may very well be in the early stages of a slow decline to solar minimum. This does not mean that we have seen the last of large sunspot groups and big solar flares however. Spikes in activity will remain likely while make the long transition to the predicted solar minimum around 2019-2020.


July 22, 2015 @ 13:45 UTC
Oh So Quiet
Good morning. Below is a look at the not so active Earth facing side of the sun on Wednesday. Both numbered regions are quiet and non threatening. No Earth directed coronal mass ejections were observed during the past day.
So what can we expect in terms of solar activity during the upcoming months and years? A look at the smoothed solar flux and sunspot data will tell us that we are now exiting the second peak of the current solar cycle 24 and may very well be in the early stages of a slow decline to solar minimum. This does not mean that we have seen the last of large sunspot groups and big solar flares however. Spikes in activity will remain likely while make the long transition to the predicted solar minimum around 2019-2020.

http://www.solarham.net/

[Osiris]

Suspicious Observer news van gisteren en video waarom de zon steeds minder actief word.

http://www.suspicious0bservers.org/

[univers]

Geomagnetic Storm Watch Issued
A pair of coronal holes stretching across the southern hemisphere are now turning into a geoeffective position. A solar wind stream flowing from these holes could reach Earth within the next 48-72 hours and lead to elevated geomagnetic at higher latitudes. A minor (G1) geomagnetic storm watch beginning on July 31st has been issued by the NOAA Space Weather Prediction Center (SWPC). More updates in the days ahead.




http://www.solarham.net/

[univers]

August 1, 2015 @ 13:20 UTC
Geomagnetic Storm Watch Issued
Good morning and welcome to the first day of August. Here is an updated look at the visible solar disk on Saturday. Solar activity remains at very low levels with no noteworthy solar flares to report. All visible sunspot regions are stable and non threatening. Region 2390 is now about to rotate onto the west limb and will soon be out of direct Earth view. No Earth directed coronal mass ejections were observed during the past day.
A high speed solar wind stream currently above 500 km/s continues to move past our planet, however the Bz component of the interplanetary magnetic field (IMF) carried within it has been predominately pointing north, a condition known to suppress geomagnetic activity. A minor storm watch will remain in effect for the next 24 hours.

http://www.solarham.net/regions/regions_aug1.jpg

http://www.solarham.net/

[univers]

August 3, 2015 @ 14:20 UTC
Limb Activity
Good morning. Solar activity on Monday remains at fairly low levels with no noteworthy Earth facing solar flares to report. Activity beyond the east limb is a different story however with a large coronal mass ejection (CME) observed late on Sunday. Another event of interest just occurred within the past few hours of this update. Below is a short video courtesy of the Solar Dynamics Observatory (SDO) using the 304 angstroms channel capturing an eruptive prominence off the southeast limb. Neither event should have a major impact on our planet. Is an increase in Earth facing activity on the horizon? Stay tuned to SolarHam.com to find out.

http://www.solarham.net/

[univers]

August 4, 2015 @ 13:30 UTC
Solar Update
Good morning. Below is an updated look at the visible solar disk on Tuesday. Solar activity is currently at very low levels. New region 2396 continues to evolve in the southeast quadrant and is considered an increased threat for at least C-Class solar flares. Elsewhere, region 2394 did show minor growth during the past day, but was otherwise stable. No Earth directed coronal mass ejections were observed during the past day. Stay tuned to SolarHam.com for the latest data and imagery.


http://www.solarham.net/regions/regions_aug4.jpg

http://www.solarham.net/

[Osiris]

Blijft rustig op de zon.
Iets verhoging qua flare activiteit,niet noemenswaardig, van B naar C range.
Enigszins geo storm door coronal holestream.

http://www.solarham.net/

[univers]

Zonneactiviteit vertoont toch geen stijgende trend
Astronomen hebben twee historische meetreeksen die inzicht geven in de activiteit van de zon beter met elkaar in overeenstemming gebracht. De ‘gekalibreerde’ gegevens laten zien dat de activiteit van de zon sinds 1700 geen duidelijk stijgende tendens vertoont. Dat betekent dat de zon waarschijnlijk geen significante bijdrage heeft geleverd aan de temperatuurstijging op aarde, die sinds het begin van de industriële revolutie is waargenomen. De magnetische activiteit van de zon gaat op en neer met een periode van ongeveer 11 jaar. In actieve perioden zijn meer donkere, ‘koele’ plekken te zien dan anders. Je kunt het verloop van de zonnecyclus dus bijhouden door simpelweg het aantal zonnevlekken te tellen. Sinds 1856 wordt bij die telling gebruik gemaakt van het zogeheten Wolf-getal. Dat is een methode waarbij zowel het aantal individuele zonnevlekken als het aantal zonnevlekgroepen in rekening wordt gebracht. Er bestaan echter ook veel oudere waarnemingen van zonnevlekken, die teruggaan tot het begin van de 17de eeuw. Die zijn echter gedaan met telescopen die niet goed genoeg waren om alle afzonderlijke zonnevlekken te zien: alleen de grotere groepen van zonnevlekken werden opgetekend. Om toch iets met deze oude waarnemingen te kunnen doen, werd in 1998 het ‘Group Sunspot Number’ (GSN) geïntroduceerd. Dit getal vertoont dezelfde 11-jarige zonnecyclus als het Wolf-getal. Maar vóór 1885 en rond 1945 vertonen de beide reeksen duidelijke verschillen: het GSN-getal is daar lager. Het gevolg daarvan was dat de zonneactiviteit, zoals uitgedrukt in het GSN-getal, een stijgende trend leek te vertonen. Daaruit leidden sommige wetenschappers af dat de mondiale temperatuurstijging van de afgelopen eeuwen wellicht voor een belangrijk deel aan de zon kon worden toegeschreven. Een nieuwe analyse heeft nu echter laten zien dat de vermeende stijgende trend het gevolg is van een kalibratiefout in het GSN-getal. Anders gezegd: er is een fout gemaakt in de wijze waarop dit getal werd berekend. Nu deze fout is rechtgezet, zijn de beide historische meetreeksen veel beter met elkaar in overeenstemming en lijkt het erop dat de zonneactiviteit de afgelopen 300 jaar niet significant is veranderd. De conclusies van dit onderzoek zijn vrijdag 7 augustus gepresenteerd tijdens een persbijeenkomst bij de 29ste Algemene Bijeenkomst van de Internationale Astronomische Unie, die momenteel in Honolulu (Hawaï) plaatsvindt. (EE)



A drawing of the Sun made by Galileo Galilei on 23 June 1613 showing the positions and sizes of a number of sunspots. Galileo was one of the first to observe and document sunspots.
Credit:The Galileo Project/M. Kornmesser


http://www.iau.org/news/pressreleases/detail/iau1508/

[univers]

August 9, 2015 @ 12:25 UTC
Solar Update
Hello again folks. Here is an updated look at the visible solar disk on Sunday. Solar activity during the past 24 hours was low. Region 2396 produced a minor C4.2 flare at 07:52 UTC early Sunday morning. The region showed minor spot growth within the center of the group during the past 12 hours and will remain a threat for an isolated M-Flare. All other regions are currently stable. A filament was seen lifting off near the northwest limb beginning at approximately 10:45 UTC (Aug 9), however is not expected to be geoeffective. No Earth directed coronal mass ejections were observed during the past day.
Although geomagnetic activity is at relatively low levels, a minor (G1) geomagnetic storm watch will remain in effect while a high speed solar wind stream continues to move past our planet. Stay tuned to SolarHam.com for the latest information.

http://www.solarham.net/regions/regions_aug9.jpg

http://www.solarham.net/

[univers]

August 13, 2015 @ 15:55 UTC
Solar Update
Hello again folks. Below is an updated look at the visible solar disk on Thursday. Solar activity is currently at very low levels. Region 2396 is stable as it prepares to turn onto the west limb. New sunspot 2400 grew slightly, but was otherwise stable. A small new sunspot is forming in the southeast quadrant and should be numbered 2401 later today. A coronal mass ejection (CME) observed on Wednesday following a southwest quadrant filament eruption looks to be headed away from our planet. A noteworthy impact to our geomagnetic field is unlikely. Stay tuned to SolarHam.com for the latest spaceweather data and imagery.


http://www.solarham.net/regions/regions_aug13.jpg

http://www.solarham.net/

[Osiris]

Oops,je laat de zon even een paar dagen voor wat ie is, vanwege de praktische nihil activiteit.

Vervolgens vraag je je af waarom mensen onrustig zijn,zeer slecht slapen en vermoeid ( in eerste instantie ikzelf en bleek dus zeker niet de enige ).

Tja, dan is volgende weer niet zo verwonderlijk;

http://www.solarham.net/planetk.htm

http://www.suspicious0bservers.org/

[univers]

Ook aardse evenaargebieden gevoelig voor gevolgen zonnestormen
Bij krachtige zonnestormen worden elektrisch geladen deeltjes de ruimte in geblazen. Wanneer die in de omgeving van de magnetische polen van de aarde de atmosfeer binnendringen, produceren ze niet alleen spectaculair poollicht, maar kunnen ze ook inductiestromen aan het aardoppervlak veroorzaken, die aanleiding kunnen geven tot storingen in onder andere elektriciteitscentrales. Dat was bijvoorbeeld het geval in 1989 in Quebec en in 2003 in Zweden. Uit nieuw onderzoek, gebaseerd op een analyse van 14 jaar aan meetgegevens en gepubliceerd in Geophysical Research Letters, blijkt nu echter dat ook de evenaargebieden van de aarde gevoelig zijn voor dit soort verstoringen, en zelfs voor de gevolgen van kleinere zonnestormen. Op ca. 100 kilometer hoogte boven de evenaar bevindt zich een soort elektronenstraalstroom (de equatorial electro-jet geheten), die opgewekte inductiestromen kan versterken, waardoor ook minder heftig 'ruimteweer' tot het uitvallen van elektriciteitscentrales en andere verstoringen kan leiden. (GS)



The equatorial electrojet is a naturally occurring flow of current approximately 100 kilometers (60 miles) above the surface of the Earth. New findings raise the issue of increasing power grid safeguards in regions previously thought to be less prone to space weather than high-latitude regions.
Credit: Brett A. Carter


http://news.agu.org/press-release/equat ... udy-finds/

[univers]

August 18, 2015 @ 13:10 UTC
Solar Update
Good morning. Here is an updated look at the visible solar disk on Tuesday. Solar activity remains at very low levels with no noteworthy solar flares to report. New region 2403 continues to move into view off the southeast limb and appears to be fairly stable. No Earth directed coronal mass ejections were observed during the past day.
A minor (G1) geomagnetic storm watch will remain in effect while a high speed solar wind continues to stream past our planet.

http://www.solarham.net/

[univers]

Deze ‘Eiffeltoren’ laat het exemplaar in Parijs verbleken en meet ongeveer zeven keer de diameter van onze planeet!

De Zweedse astrofotograaf Göran Strand moest ongetwijfeld twee keer kijken, toen hij zijn telescoop op de zon richtte en deze bijzondere protuberans zag. Met een beetje fantasie lijkt de protuberans sterk op de Eiffeltoren!

Een protuberans wordt ook wel een plasmaboog genoemd. Het is een boog van gemagnetiseerd plasma die in de zonneatmosfeer zweeft. De boog is aanzienlijk koeler dan de omgeving en genereert zichtbaar licht, waardoor deze vrij gemakkelijk gespot kan worden.


Strand – die sinds 1996 actief is als astrofotograaf en er in 2012 zelfs zijn werk van maakte – maakte zo’n duizend foto’s van de zon en protuberans en verwerkte deze samen tot onderstaande foto. Om in beeld te brengen hoe omvangrijk de protuberans is, zette hij de aarde er op schaal bij.



De zon. Het kader is uitvergroot hieronder te zien. Afbeelding: Göran Strand /Astrofotografen.se.



Foto: Göran Strand / Astrofotografen.se.

http://www.astrofotografen.se/

[univers]

August 20, 2015 @ 12:40 UTC
Region 2403 / Solar Update
Good morning. Solar activity during the past 24 hours increased to low levels with minor C-Flares detected around sunspot 2403 located in the southeast quadrant. The active region continued to gradually expand during the past day and has a Beta-Gamma magnetic classification. There will remain a chance for C-Flares and now perhaps an isolated M-Flare. Elsewhere, region 2401 in the southwest quadrant was stable and non threatening. No Earth directed coronal mass ejections were observed during the past day. Stay tuned to SolarHam.com for the latest data and imagery.

http://www.solarham.net/pictures/archiv ... 5_2403.jpg

http://www.solarham.net/

[univers]

August 21, 2015 @ 11:55 UTC
M-Flares (UPDATED)
It's been a while, but solar activity is now at moderate levels. Region 2403 was responsible for an M1.2 solar flare peaking at 02:18 UTC (Aug 21). This was the first M-Flare since July 6th. Another M-Flare (M1.4) is in progress at the time of this update at 09:50 UTC. More flaring will remain possible as the active region turns into a more geoeffective Earth facing position.
UPDATE @ 11:55 UTC: The second M-Flare (M1.4) I first reported on earlier this morning may have produced a coronal mass ejection (CME). The event was associated with a Type II radio emission with an estimated velocity of 490 km/s. Coronal dimming surrounding the active region was observed following the flare, indicating that a CME is possible. There is currently a lack of coronagraph imagery, so more updates to follow once new imagery comes in.

M1.4 Solar Flare (Region 2403) - Early Friday

http://www.solarham.net/pictures/archiv ... 5_m1.4.jpg

http://www.solarham.net/