From Manu: ” N49, supernova remnant in the LMC.”


Manu Garcia, a friend from IAC.

The universe around us.
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Stellar Shrapnel taken with the aftermath of the explosion.

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This beautiful composite image shows N49 , the aftermath of a supernova explosion in the Large Magellanic Cloud, LMC . A new observation over from X-ray Observatory Chandra NASA , shown in blue , reveals evidence of a shaped object bullet goes out of a field of debris remaining an exploded star, BULLET in image.

NASA/Chandra Telescope

To detect this bullet, a team of researchers led by Sangwook Park Pennsylvania State University used Chandra to observe N49 for over 30 hours. This bullet can be seen in the lower right corner of the image and is rich in silicon, sulfur and neon. The detection of this bullet shows that the explosion that destroyed the star was highly asymmetric.

The bullet is traveling at a high speed of about 5 million miles per hour from a bright point source in the upper left part of N49 . This light source may be a so – called soft gamma ray repeater (SGR), a source that emits bursts of gamma rays and X-rays. A major explanation for these objects is that they are neutron stars with extremely powerful magnetic fields. Since neutron stars are often created in supernova explosions, an association between the SGR and supernova remnants is not unexpected. This case is enhanced by the apparent alignment between the bullet trajectory and bright source of X – rays. However, new data from Chandra also shows that the light source is more obscured by gas than expected if it really lies inside the supernova remnant. In other words, it is possible that the bright X-ray source actually lies beyond the remnant and is projected along the line of sight. Another possible bullet is on the opposite side of the remnant, but is more difficult to see the image because it overlaps with the light emission of shock interaction cloud.

Optical data space telescope Hubble ( yellow and purple ) shows bright filaments where the shock wave generated by the supernova is interacting with the densest regions near cold clouds, molecular gas.

NASA/ESA Hubble Telescope

Using new data from Chandra , the age of N49, as it appears in the image, is believed to be about 5,000 years and the energy of the explosion is estimated to be approximately twice that of a normal supernova. These preliminary results suggest that the original explosion was caused by the collapse of a massive star, Type II supernova.

Credits for N49:
X ray (NASA / CXC / Penn State / S.Park et al.);
Optical: NASA / STScI / UIUC / YHChu and R.Williams et al

See the full article here .

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