X-rays From A Young Supernova Remnant
More than fifty years ago, a supernova was rescued in M83, a turn universe about 15 million light years from Earth. Astronomers have used NASA’s Chandra X-ray Observatory to make a initial showing of X-rays issued by a waste from this explosion.
Named SN 1957D since it was a fourth supernova to be rescued in a year 1957, it is one of usually a few located outward of a Milky Way universe that is detectable, in both radio and visual wavelengths, decades after a blast was observed. In 1981, astronomers saw a vestige of a exploded star in radio waves, and afterwards in 1987 they rescued a vestige during visual wavelengths, years after a light from a blast itself became undetectable.
A comparatively brief regard — about 14 hours prolonged — from NASA’s Chandra X-ray Observatory in 2000 and 2001 did not detect any X-rays from a vestige of SN 1957D. However, a most longer regard performed in 2010 and 2011, totaling scarcely 8 and 1/2 days of Chandra time, did exhibit a participation of X-ray emission. The X-ray liughtness in 2000 and 2001 was about a same as or reduce than in this low image.
This new Chandra picture of M83 is one of a deepest X-ray observations ever done of a turn universe over a own. This full-field perspective of a turn universe shows a low, medium, and high-energy X-rays celebrated by Chandra in red, green, and blue respectively.
The new X-ray information from a vestige of SN 1957D yield critical information about a inlet of this blast that astronomers consider happened when a large star ran out of fuel and collapsed. The placement of X-rays with appetite suggests that SN 1957D contains a proton star, a fast spinning, unenlightened star shaped when a core of pre-supernova star collapsed. This proton star, or pulsar, might be producing a cocoon of charged particles relocating during tighten to a speed of light famous as a pulsar breeze nebula.
If this interpretation is confirmed, a pulsar in SN 1957D is celebrated during an age of 55 years, one of a youngest pulsars ever seen. The vestige of SN 1979C in a universe M100 contains another claimant for a youngest pulsar, though astronomers are still uncertain either there is a black hole or a pulsar during a core of SN 1979C.
Image Credits: X-ray: NASA/CXC/STScI/K.Long et al., Optical: NASA/STScI