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Message Subject <<TIMEWATCHER'S>> DAILY SPACE/SUN NEWS((UPDATES DAILY OR AS NEEDED)) 4MIN NEWS UPDATE 05/17/2013 "How to Watch the Sun"
Poster Handle <<TIMEWATCHER>>
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02/09/2013

Picture of the Day

Emission Nebula LHA 120-N 44

LHA 120-N 44 (or N44 for short) is an emission nebula (H II region) of some 1,000 light-years across, located about 157,000 light-years away in the Large Magellanic Cloud, a satellite galaxy of our own Milky Way, toward the southern constellation of Dorado.

This very rich region of gas, dust and young stars surrounds NGC 1929, a rich large cluster of bright young, blue-white stars, and is without doubt the original source of the material that formed these stars that produce intense radiation.

LHA 120-N 44 is dominated by a cosmic superbubble. This superbubble, of roughly 325 by 250 light-years across, is expanding outwards due to an interaction between two destructive forces generated by the stars at its center: Young stars in the cluster send out streams of charged particles (or stellar winds) that have cleared out the bubble center, and massive stars have exploded to create supernovae shock waves that push the gas out further.

LHA 120-N 44 has a smaller bubble structure inside known as N44F which has been shaped in a similar manner; it has a hot, massive central star with an unusually powerful stellar wind that moves at 7 million kilometers per hour. This is because it loses material at 100 million times the rate of the Sun, or approximately 1,000,000,000,000,000 tons per year.

LINK WITH PIC: [link to annesastronomynews.com]

Supernova Alert! Astronomers Spot Warning Outburst

Supernovas are the most powerful stellar explosions in the universe, visible all the way to the edge of the cosmos. These stars detonate for two known reasons: either from gorging on too much mass stolen from a companion star or by running out of fuel and abruptly collapsing.

Astronomers have suggested that stars can give off smaller explosions just before they go supernova. To find out more about supernovas, researchers used three telescopes — the Palomar Observatory, the Very Large Array and NASA's Swift mission — to investigate a star 500 million light-years away. The star, which had about 50 times the mass of the sun, ultimately detonated as a supernova named SN 2010mc.

The researchers' data suggest that 40 days before the final explosion, the dying star produced a giant outburst, releasing as much matter as 1 percent the mass of the sun — about 3,330 times the mass of Earth — at about 4.5 million mph (7.2 million km/h). [Photos of Great Supernova Explosions]

"What is surprising is the short time between the precursor eruption and the eventual supernova explosion; one month is an extremely tiny fraction of the 10-million-year lifespan of a star," said one of the study authors, Mansi Kasliwal at the Carnegie Institution for Science in Pasadena, Calif.

This explosion radiated "about a million times more than the energy output of the sun in an entire year," author Mark Sullivan of the University of Southampton in England told SPACE.com. But this precursor "is still about 5,000 times less than the energy output of the subsequent supernova."

LINK: [link to www.space.com]

Distant Star Goes Disco

A disco inferno in space? Astronomers have been keeping an eye on an unusual star that unleashes a burst of light every 25 days, like an extremely slow pulsating disco ball. Similar pulsating bursts of light have been seen before, but this one, named LRLL 54361 is the most powerful beacon ever seen.

Using the Spitzer and Hubble space telescopes, astronomers have solved the mystery of this star. It is actually two newly formed protostars in a binary system, doing a little disco dance of their own. And as they spin around each other on the smoky dance floor (actually a dense cloud of gas and dust), a blast of radiation is unleashed each time the stars get close to each other in their orbits. The effect seen by the telescopes is enhanced by an optical illusion called a light echo.

Read more: [link to www.universetoday.com]

Sun News 02/09/2013

Product: Forecast Discussion
Issued: 2013 Feb 09 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

Solar Activity

.24 hr Summary...
Solar activity reached low levels due to a long duration C2 flare. The
flare began at 09/0530 UTC, peaked at 09/0640 UTC and ended at 09/0726
UTC. This two-ribbon, Hyder flare erupted along a 27 degree NE-SW
oriented, quiescent filament centered near N23W06. Imagery from STEREO
Ahead COR2 imagery indicated a CME lifted off the NE limb, first
observed at 09/0709 UTC. Subsequent LASCO C2 and C3 imagery revealed a
partial-halo CME lifted off the N-W limb, first visible on C3 at 09/0806
UTC. Initial shock velocity estimates put the plane-of-sky speed at
about 500 km/s. It appears most of the ejecta has a northly trajectory.
Region 1670 (N19E06) indicated the most change during the period.
Intermediate spot growth was observed coupled with an increase in area
and development of a Beta-Gamma magnetic configuration. This region, as
well as the remander of the disk and limb, was quiet and stable.

.Forecast...
Solar activity is expected to be low during the period (09 - 11 Feb)
with a slight chance for an M-class flare from developing Region 1670.


Energetic Particle

.24 hr Summary...
The greater than 10 MeV proton flux at geosynchronous orbit was at
background levels. The greater than 2 MeV electron flux was at normal
levels.

.Forecast...
The greater than 10 MeV proton flux at geosynchronous orbit is expected
to remain at background levels through the period (09 - 11 Feb). The
greater than 2 MeV electron flux at geosynchronous orbit is expected to
be at normal levels through the period.

Solar Wind

.24 hr Summary...
ACE EPAM data showed a slight decrease in values through the period.
Solar wind speeds remained steady between 450 km/s to 475 km/s. Total
IMF varied between 2 nT to 7 nT with a maximum southward Bz component of
-7 nT observed at 08/1237 UTC. The phi component remained in a mostly
positive (away) orientation.

.Forecast...
Wind speed is expected to stay elevated on day 1 (09 Feb) due to coronal
hole high speed stream (CH HSS) effects. A gradual decrease in wind
speed is expected on days 2 and 3 (10 - 12 Feb) as CH HSS effects
subside.

Geospace
.24 hr Summary...
The geomagnetic field was mostly quiet with an isolated unsettled
interval observed at 08/1500 UTC.

.Forecast...
Field activity is expected to remain at quiet to unsettled levels on
day 1 (09 Feb) due CH HSS effects. Activity is expected to
decrease to mostly quiet levels on day 2 (10 Feb) as CH HSS effects
subside with quiet levels persisting through day 3 (11 Feb).

LINK: [link to www.solarham.net]

Streamer: [link to iswa.gsfc.nasa.gov]
[link to iswa.gsfc.nasa.gov]
[link to www.gdgps.net]

Active Region Map: [link to sidc.oma.be]
STAR Active region map: [link to solen.info]
EVE 3-Day: [link to lasp.colorado.edu]
Magnetometer: [link to www.swpc.noaa.gov]
Ionospheric Electrons: [link to www.ips.gov.au]
Ionospheric foF2: [link to www.ips.gov.au]
Surface Heat Index (USA): [link to weather.unisys.com]
Sea Surface Temps (02/08/13): [link to www.ssec.wisc.edu]

Estimated Planetary K-Index: [link to www.solarham.net]

Filament Eruption and CME

A potentially Earth directed Coronal Mass Ejection (CME) is visible in the latest STEREO Ahead COR 2 imagery and was the result of a filament eruption between Sunspots 1667 and 1670. The eruption registered as a long duration C-Class solar flare. More information on this later today.



3MIN News February 9, 2013



News Addendum February 9, 2013

 
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