Daily Archives: March 10, 2014

The Sun Online and solar activity. March 05, 2014

There were four low M flares and twelve C flares on the Sun during the past 24 hours, the large majority being released by NOAA AR 12002. The brightest one was an M1.1 flare from NOAA AR 12002 peaking at 00:26 UT on March 10. In the next 48 hours, the probability for C flares is very high (over 95%) and for M flares around 70%, mainly from beta-gamma-delta region NOAA AR 12002. An X flare is possible but unlikely. The halo CME detected by CACTUS on LASCO C2 imagery from 3:12 UT on March 9, is probably a backsided event related to an eruption in NOAA AR 11986, as can be seen in STEREO B images. This CME is not expected to be geoeffective.Since 12h UT on March 9, solar wind speed as observed by ACE decreased from around 340 km/s to around 270 km/s around 0h UT on March 10, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between 1.5 and 4.5 nT in this period. From then onwards, solar wind speed increased again to about 340 km/s, with the magnitude of the IMF fluctuating between 1.5 and 6 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 0 and 3; NOAA Kp between 0 and 3). Quiet geomagnetic levels are expected on March 10, 11, and 12.
SIDC

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 03/10/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer

  

Related posts:

  1. The Sun Online and solar activity. March 05, 2014
  2. The Sun Online and solar activity. March 05, 2014
  3. The Sun Online and solar activity. March 09, 2014
  4. The Sun Online and solar activity. March 04, 2014

The Sun Online and solar activity. March 05, 2014

There were four low M flares and twelve C flares on the Sun during the past 24 hours, the large majority being released by NOAA AR 12002. The brightest one was an M1.1 flare from NOAA AR 12002 peaking at 00:26 UT on March 10. In the next 48 hours, the probability for C flares is very high (over 95%) and for M flares around 70%, mainly from beta-gamma-delta region NOAA AR 12002. An X flare is possible but unlikely. The halo CME detected by CACTUS on LASCO C2 imagery from 3:12 UT on March 9, is probably a backsided event related to an eruption in NOAA AR 11986, as can be seen in STEREO B images. This CME is not expected to be geoeffective.Since 12h UT on March 9, solar wind speed as observed by ACE decreased from around 340 km/s to around 270 km/s around 0h UT on March 10, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between 1.5 and 4.5 nT in this period. From then onwards, solar wind speed increased again to about 340 km/s, with the magnitude of the IMF fluctuating between 1.5 and 6 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 0 and 3; NOAA Kp between 0 and 3). Quiet geomagnetic levels are expected on March 10, 11, and 12.
SIDC

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 03/10/14
Time UT: 14:00
Exposure 1/500 sec.

With SPONLI Space is getting closer

  

Related posts:

  1. The Sun Online and solar activity. March 05, 2014
  2. The Sun Online and solar activity. March 05, 2014
  3. The Sun Online and solar activity. March 09, 2014
  4. The Sun Online and solar activity. March 03, 2014

M3: globular cluster in Canes Venatici

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Messier 3 (also known as M3 or NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered by Charles Messier on May 3, 1764, and resolved into stars by William Herschel around 1784. Since then, it has become one of the best-studied globular clusters. Identification of the cluster’s unusually large variable star population was begun in 1913 by American astronomer Solon Irving Bailey and new variable members continue to be identified up through 2004.
This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 8 billion years old. It is located at a distance of about 33,900 light-years away from Earth.

Imaging telescopes or lenses: AT6RC
Imaging cameras: Canon EOS 1000D / Rebel XS
Mounts: Orion Atlas EQ-G
Guiding telescopes or lenses: Orion Mini Guide Scope
Guiding cameras: Orion Star Shoot Planetary Imager & Autoguider
Focal reducers: TeleVue 0.8x
Software: DeepSkyStacker, PHD guiding, photoshop, Canon EOS
Dates: May 11, 2012
Frames: 90×120″ ISO1600
Integration: 3.0 hours

Autor: Mike Carroll

10 March 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

Related posts:

  1. M13: Great Cluster in Hercules
  2. Globular cluster M13
  3. Globular Cluster M 13
  4. Globular cluster M56 in Lyra

Gamma Rays from Galactic Center Dark Matter?

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Image Credit: T. Daylan et al., Fermi Space Telescope, NASA

What is creating the gamma rays at the center of our Galaxy? Excitement is building that one answer is elusive dark matter. Over the past few years the orbiting Fermi Gamma-ray Space Telescope has been imaging our Galaxy’s center in gamma-rays. Repeated detailed analyses indicate that the region surrounding the Galactic center seems too bright to be accounted by known gamma-ray sources. A raw image of the Galactic Center region in gamma-rays is shown above on the left, while the image on the right has all known sources subtracted – leaving an unexpected excess. An exciting hypothetical model that seems to fit the excess involves a type of dark matter known as WIMPs, which may be colliding with themselves to create the detected gamma-rays. This hypothesis is controversial, however, and debate and more detailed investigations are ongoing. Finding the nature of dark matter is one of the great quests of modern science, as previously this unusual type of cosmologically pervasive matter has shown itself only through gravitation.

NASA APOD 10-Mar-2014

Related posts:

  1. Gamma-Ray Earth and Sky
  2. A Laser Strike at the Galactic Center
  3. The Cloudy Cores of Active Galaxies
  4. M7: Open Star Cluster in Scorpius