...heute bei
http://www.spaceweather.com/
The sun has been remarkably blank and quiet lately. Don't be surprised, though, if solar activity surges later this week. For days, something on the farside of the sun has been exploding and throwing coronal mass ejections (CMEs) over the sun's limb. One of these CMEs is pictured
below:
Whatever's "over there"--probably a big sunspot--might soon turn toward Earth as the sun rotates. Keep an eye on the sun's eastern limb in the days ahead.
wow!!!
...vielleicht demnächst....
gruß
fr
July 24, CME farside of the sun
Moderator: StefanK
-
Wenz Frieder
- Beiträge: 90
- Registriert: 16. Jul 2005, 20:27
- Wohnort: Pfinztal bei Karlsruhe
July 24, CME farside of the sun
flowerinthesky
-
Lutz Schenk
- Administrator
- Beiträge: 1499
- Registriert: 9. Jan 2004, 18:34
- Wohnort: Baunatal, Nordhessen 51.25N 9.39E
- Kontaktdaten:
Re: July 24, CME farside of the sun
Hallo Zusammen,
die backside-cme-mails häufen sich doch deutlich, und der Lasco-C3-Film der letzten 3 Tage ist sehr eindrucksvoll!
http://star.mpae.gwdg.de/mpg/c3.mpg
Allein 3 CME-Mails bekam ich heute:
UCMEO 93001 50724 2230/
50724 61354 92018 0002/ 360// 113// 22500
50724 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
LASCO/EIT observed a strong Full Halo Event on 2005/07/24 in the aftermath
of at least a Partial Halo Event. Signatures of the Full Halo Event were
first seen in C2 at 13:54 UT as a bright and ragged loop front above the
E Limb. It develops as an expanding and bright loop front toward E,
surrounded by diffuse extensions. The C2 occulting disk appears to be
fully surrounded by 14:30 UT. Unfortunately, there are no C2 CME watch
images between 15:00 - 17:00 UT (last C2 image before the gap at 14:30 UT,
first one after the gap at 17:07 UT), because of especial C2 observations
(only PBs subfield images) for the Faraday Rotation Study (with Cassini).
The event is first seen in C3 at 14:18 UT, all above the eastern limb.
The next C3 image (17:18 UT) shows the LE on E apparently past the outer
edge, with faint extensions above the western limb. Due to the lack of C3
images between 15:00 - 17:00 UT, it becomes practically impossible to
determine the mean plane-of-sky speed of the LE on C3. Therefore, Using
only 2 C2 frames and and one C3 frame, the mean plane-of-sky speed was ~
2500 km/sec at PA 081, showing practically no acceleration.
GOES reported extremely low X-ray activity during the day (A-class).
Likewise, EIT 195 images do not show any significant activity on the disk.
However, it does show an important (backsided) CME signature above the E
Limb, starting at around 13:36 UT
In summary, the event has therefore been classified as a strong and
asymmetric full halo event, backsided.
Note that the Full Halo event, as said at the beginning of this report,
develops in the aftermath of at least a Partial Halo event that was first
seen in C2 at 11:30 UT. By 11:54 UT, faint extensions span up to above the
N Pole. By 12:43 UT, the whole event spans in C2 about 210 deg
(approximately from PA 310 - 160). It was first seen in C3 at 11:42 UT
just appearing above the ESE limb. Its mean plane-of-sky speed of the LE
of the bulk of the CME (not the diffuse front ahead, as it was too diffuse
for an accurate measurement) was ~ 960 km/sec at PA 112. The event was
apparently surpassed by the Full Halo Event during the C3 gap. EIT 195
images do not show frontsided activity during the time of the start
of the event. A faint CME signature can be seen however above the E limb
by around 11:12 UT. This event is catalogued therefore as at least a
partial halo event, backsided.
Movies and images of the Full Halo event (including the at least Partial
Halo event) will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050724
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Nr. 2
UCMEO 93001 50725 1700/
50724 62230 80842 0002/ 360// 113// 20650
50724 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
LASCO/EIT observed an asymmetric Full Halo Event on 2005/07/24-25. The
event was first seen in C2 on 07/24 at 22:30 UT as a bright and ragged
loop front above the E Limb with very faint and diffuse extensions to N
and S. The ragged loop front develops toward ESE, the C2 occulting disk
being fully covered by the extensions by ~ 23:54 UT (by that time the
LE on E is well past the outer edge of the C2 FOV, while on W-SW the
extensions are just above the inner edge of C2. The event is first seen
in C3 at 23:18 UT, all above the E-ESE limb. Faint expanding extensions
can be seen then to S, and up to past the N Pole. Though the C3 disk
becomes apparently fully covered by 02:18 UT, the signal is extremely
faint on SW. The mean plane-of-sky speed of the ragged LE at PA 098 was
~ 650 km/sec.
GOES reported extremely low X-ray activity during the 24th and 25th of
July (A-class). Likewise, EIT 195 images did not show any significant
activity on the disk.
In summary, the event has therefore been classified as a very asymmetric
full halo event, backsided.
Movies and images of the event will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050724b
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Nr. 3
UCMEO 93001 50725 1730/
50725 61106 91418 0002/ 360// 113// 31590
50725 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
Following the chain of events of the last days, LASCO/EIT observed another
asymmetric Full Halo Event, this time on 2005/07/25. The event was first
seen in C2 at 11:06 UT as a ragged front just appearing above the E Limb.
By 11:30 UT, the LE of the ragged front (now seen as a wide and ragged
loop front) already reached the outer edge of C2. Faint extensions reach
the W limb by 11:54 UT, the C2 occulting disk being fully covered by
12:43 UT (the signal is again extremely faint above the SW limb). The
event is first seen in C3 at 11:18 UT, just appearing above the E Limb.
By 11:42 UT faint extensions cover both the N and S poles. The C3
occulting disk is fully covered by 12:18 UT. The mean plane-of-sky speed
of the LE at PA 068 was ~ 1590 km/sec.
GOES reported extremely low X-ray activity during the day (A-class).
Likewise, EIT 195 images did not show any significant activity on the
disk. However, it did show signatures of an important backsided CME all
above the E Limb starting at around 11:00 UT.
In summary, the event has therefore been classified as an asymmetric full
halo event, backsided.
Movies and images of the event will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050725
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Da sind doch schon einige heftigere Sachen dabei.
Mal hoffen das die auch noch was bringen, wenn sie herumkommen.
Viele Grüße,
Lutz
die backside-cme-mails häufen sich doch deutlich, und der Lasco-C3-Film der letzten 3 Tage ist sehr eindrucksvoll!
http://star.mpae.gwdg.de/mpg/c3.mpg
Allein 3 CME-Mails bekam ich heute:
UCMEO 93001 50724 2230/
50724 61354 92018 0002/ 360// 113// 22500
50724 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
LASCO/EIT observed a strong Full Halo Event on 2005/07/24 in the aftermath
of at least a Partial Halo Event. Signatures of the Full Halo Event were
first seen in C2 at 13:54 UT as a bright and ragged loop front above the
E Limb. It develops as an expanding and bright loop front toward E,
surrounded by diffuse extensions. The C2 occulting disk appears to be
fully surrounded by 14:30 UT. Unfortunately, there are no C2 CME watch
images between 15:00 - 17:00 UT (last C2 image before the gap at 14:30 UT,
first one after the gap at 17:07 UT), because of especial C2 observations
(only PBs subfield images) for the Faraday Rotation Study (with Cassini).
The event is first seen in C3 at 14:18 UT, all above the eastern limb.
The next C3 image (17:18 UT) shows the LE on E apparently past the outer
edge, with faint extensions above the western limb. Due to the lack of C3
images between 15:00 - 17:00 UT, it becomes practically impossible to
determine the mean plane-of-sky speed of the LE on C3. Therefore, Using
only 2 C2 frames and and one C3 frame, the mean plane-of-sky speed was ~
2500 km/sec at PA 081, showing practically no acceleration.
GOES reported extremely low X-ray activity during the day (A-class).
Likewise, EIT 195 images do not show any significant activity on the disk.
However, it does show an important (backsided) CME signature above the E
Limb, starting at around 13:36 UT
In summary, the event has therefore been classified as a strong and
asymmetric full halo event, backsided.
Note that the Full Halo event, as said at the beginning of this report,
develops in the aftermath of at least a Partial Halo event that was first
seen in C2 at 11:30 UT. By 11:54 UT, faint extensions span up to above the
N Pole. By 12:43 UT, the whole event spans in C2 about 210 deg
(approximately from PA 310 - 160). It was first seen in C3 at 11:42 UT
just appearing above the ESE limb. Its mean plane-of-sky speed of the LE
of the bulk of the CME (not the diffuse front ahead, as it was too diffuse
for an accurate measurement) was ~ 960 km/sec at PA 112. The event was
apparently surpassed by the Full Halo Event during the C3 gap. EIT 195
images do not show frontsided activity during the time of the start
of the event. A faint CME signature can be seen however above the E limb
by around 11:12 UT. This event is catalogued therefore as at least a
partial halo event, backsided.
Movies and images of the Full Halo event (including the at least Partial
Halo event) will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050724
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Nr. 2
UCMEO 93001 50725 1700/
50724 62230 80842 0002/ 360// 113// 20650
50724 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
LASCO/EIT observed an asymmetric Full Halo Event on 2005/07/24-25. The
event was first seen in C2 on 07/24 at 22:30 UT as a bright and ragged
loop front above the E Limb with very faint and diffuse extensions to N
and S. The ragged loop front develops toward ESE, the C2 occulting disk
being fully covered by the extensions by ~ 23:54 UT (by that time the
LE on E is well past the outer edge of the C2 FOV, while on W-SW the
extensions are just above the inner edge of C2. The event is first seen
in C3 at 23:18 UT, all above the E-ESE limb. Faint expanding extensions
can be seen then to S, and up to past the N Pole. Though the C3 disk
becomes apparently fully covered by 02:18 UT, the signal is extremely
faint on SW. The mean plane-of-sky speed of the ragged LE at PA 098 was
~ 650 km/sec.
GOES reported extremely low X-ray activity during the 24th and 25th of
July (A-class). Likewise, EIT 195 images did not show any significant
activity on the disk.
In summary, the event has therefore been classified as a very asymmetric
full halo event, backsided.
Movies and images of the event will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050724b
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Nr. 3
UCMEO 93001 50725 1730/
50725 61106 91418 0002/ 360// 113// 31590
50725 ///// ///// ///// ///// 5//2/
99999
PLAIN
BT
Following the chain of events of the last days, LASCO/EIT observed another
asymmetric Full Halo Event, this time on 2005/07/25. The event was first
seen in C2 at 11:06 UT as a ragged front just appearing above the E Limb.
By 11:30 UT, the LE of the ragged front (now seen as a wide and ragged
loop front) already reached the outer edge of C2. Faint extensions reach
the W limb by 11:54 UT, the C2 occulting disk being fully covered by
12:43 UT (the signal is again extremely faint above the SW limb). The
event is first seen in C3 at 11:18 UT, just appearing above the E Limb.
By 11:42 UT faint extensions cover both the N and S poles. The C3
occulting disk is fully covered by 12:18 UT. The mean plane-of-sky speed
of the LE at PA 068 was ~ 1590 km/sec.
GOES reported extremely low X-ray activity during the day (A-class).
Likewise, EIT 195 images did not show any significant activity on the
disk. However, it did show signatures of an important backsided CME all
above the E Limb starting at around 11:00 UT.
In summary, the event has therefore been classified as an asymmetric full
halo event, backsided.
Movies and images of the event will shortly be made available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20050725
Best wishes,
Guillermo Stenborg
+--------------------------------------------------+
Dr. Guillermo A. Stenborg
SOHO-LASCO Operations Scientist,
CUA, MC 612.5, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
e-mail: stenborg@kreutz.nascom.nasa.gov
+--------------------------------------------------+
Da sind doch schon einige heftigere Sachen dabei.
Mal hoffen das die auch noch was bringen, wenn sie herumkommen.
Viele Grüße,
Lutz
-
PeterKuklok
- Beiträge: 949
- Registriert: 9. Jan 2004, 07:59
- Wohnort: Ffm
Hallo,
dazu passend anbei ein AstroAlert vom STD.
Grüße
Peter
dazu passend anbei ein AstroAlert vom STD.
Grüße
Peter
A s t r o A l e r t
26 July 2005
Solar Terrestrial Dispatch
www.spacew.com
POSSIBLE STRONG SUNSPOT COMPLEX TO ROTATE INTO VIEW SOON
Roughly two weeks ago, an active region known as Region 10786 (or simply
Region 786) increased in complexity as it approached the western limb of the
Sun. As it rotated out of view behind the western limb, it spawned a powerful
X-class solar flare and a fast coronal mass ejection. The trajectory of the
ejected mass took the bulk of the space weather disturbance away from the
Earth. During the last two weeks, this active region has been rotating from
the western limb, behind the sun and back toward the eastern limb. In the
process, it has been blamed for producing numerous strong coronal mass
ejections that originated from behind the Sun - supposedly related to
energetic solar flare activity.
Old Region 786 is due to return to the eastern solar limb and rotate
back into view during the next 72 hours (it will be assigned a new number
when it returns). There is excitement concerning its imminent return because
of the potential volatility associated with this region. If the region
retains its volatility, it has the potential to be the source of several
additional major solar flares during the next two weeks. Approximately one
week from now, it should be in a fairly good position for producing
Earthward-directed coronal mass ejections. As a result, aurora observers
should be aware of the increased risk for auroral activity (northern lights)
during the next two weeks. Much more will be known once the sunspot complex
rotates into view and presents itself for material scrutiny during the next 3
to 5 days.
As the region rotates into view, solar observers should monitor the
eastern limb for signs of activity. Volatile active regions are often
associated with active prominences, strong surging and sometimes powerful
sprays of mass outward. Such observations require hydrogen-alpha solar
filters to be attached to telescopic equipment. For those who do not have
such equipment, near-realtime views from various professional solar
observatories can be seen on-line by visiting: www.spacew.com/sunnow.
** End of AstroAlert **
-
Peter Hauser
- Beiträge: 84
- Registriert: 17. Jan 2004, 23:57
- Wohnort: Stuttgart
-
Wenz Frieder
- Beiträge: 90
- Registriert: 16. Jul 2005, 20:27
- Wohnort: Pfinztal bei Karlsruhe
something's coming
SOMETHING'S COMING: A big active sunspot group is lurking just behind the sun's eastern limb. How do we know? It keeps exploding and throwing clouds of hot magnetized gas into space. Andreas Murner of Bavaria, Germany took this snapshot of one such blast on July 27th:
Soon, perhaps within 48 hours, this hidden sunspot will reveal itself. The sun's 27-day rotation is slowly turning the sunspot toward Earth. If the 'spot remains active, we can expect Earth-directed explosions as early as this weekend and continuing next week. Stay tuned for updates.
more images: from Harald Paleske of Langendorf, Sachsen-Anhalt, Germany; from Pavol Rapavy of Rimavska Sobota, Slovakia; from Sean Walker of Cambridge, MA; from Peter Paice of Belfast, Northern Ireland;
http://www.spaceweather.com/
....etwas "liegt in der Luft..." / "...hinter der Sonne" ....und wir werden es jedenfalls bald sehen....
schon jetzt sehenswert: das schöne Foto von "Andreas Murner of Bavaria, Germany"... auf spaceweather.com....
Wow! Danke, Andreas Murner!
gruß
frieder
Soon, perhaps within 48 hours, this hidden sunspot will reveal itself. The sun's 27-day rotation is slowly turning the sunspot toward Earth. If the 'spot remains active, we can expect Earth-directed explosions as early as this weekend and continuing next week. Stay tuned for updates.
more images: from Harald Paleske of Langendorf, Sachsen-Anhalt, Germany; from Pavol Rapavy of Rimavska Sobota, Slovakia; from Sean Walker of Cambridge, MA; from Peter Paice of Belfast, Northern Ireland;
http://www.spaceweather.com/
....etwas "liegt in der Luft..." / "...hinter der Sonne" ....und wir werden es jedenfalls bald sehen....
schon jetzt sehenswert: das schöne Foto von "Andreas Murner of Bavaria, Germany"... auf spaceweather.com....
Wow! Danke, Andreas Murner!
gruß
frieder
flowerinthesky
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