Supernova shockwave velocity measured accurately
Washington: Researchers have succeeded in precisely measuring the expansion velocity of a shockwave of the supernova remnant W44.
The remnant is located in the constellation of Aquila, approximately 10,000 light-years away from our solar system.
The team, led by Tomoro Sashida and Tomoharu Oka (Keio University), observed the high-temperature and high-density molecular gas in the millimeter/submillimeter wave ranges.
The analysis shows that the expansion velocity of the W44 shockwave is 12.9 plus/minus 0.2 km/sec.
In addition, it became clear that the supernova explosion released kinetic energy of 1-3 x 10 to the power of 50 erg into the interstellar medium. The energy emitted from the Sun is approximately 3.6 x 10 to the power 33 erg/sec.
Can you image how enormous amount of energy is released from the supernova explosion? Furthermore, other molecular gas with an extremely high velocity of higher than 100 km/sec was also detected.
The origin of this super-high-velocity molecular gas remains unclear at the present time.
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