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جلِز وِلِز کردن باقیمانده ی یک ستاره ی مرده !!
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[تصویر:  13601665161.jpg]






Sizzling Remains of a Dead Star
This
new view of the historical supernova remnant Cassiopeia A, located
11,000 light-years away, was taken by NASA's Nuclear Spectroscopic
Telescope Array, or NuSTAR. Blue indicates the highest energy X-ray
light, where NuSTAR has made the first resolved image ever of this
source. Red and green show the lower end of NuSTAR's energy range, which
overlaps with NASA's high-resolution Chandra X-ray Observatory.


Light from the stellar explosion that created Cassiopeia A is thought
to have reached Earth about 300 years ago, after traveling 11,000 years
to get here. While the star is long dead, its remains are still bursting
with action. The outer blue ring is where the shock wave from the
supernova blast is slamming into surrounding material, whipping
particles up to within a fraction of a percent of the speed of light.
NuSTAR observations should help solve the riddle of how these particles
are accelerated to such high energies

X-ray light with energies
between 10 and 20 kiloelectron volts are blue; X-rays of 8 to 10
kiloelectron volts are green; and X-rays of 4.5 to 5.5 kiloelectron
volts are red.

The starry background picture is from the Digitized Sky Survey.

› Image without background stars

Image credit: NASA/JPL-Caltech/DSS
در مورد اظهار نظر آقایون در تاپیک دلخوری باید بگم:
آقایون: کم گوی و گزیده گوی چون در// تا ز اندک تو جهان شود پر!!!
هرچند ک کلام گوهر بار از زبان شما جاری نشده، نمیشود و نخواهد شد!!!
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  رقص یک ستاره ی نوزاد !!! amir astronomer 0 225 04-01-2013، 02:00 AM
آخرین ارسال: amir astronomer
  باقیمانده ی یک ستاره ی منفجر شده !! amir astronomer 0 215 17-11-2012، 03:24 PM
آخرین ارسال: amir astronomer
  ستاره Dash @li 0 373 14-08-2012، 07:17 PM
آخرین ارسال: Dash @li

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