Chandra Discovers Unusual Brightness Changes in Supernova Remnants
6 Min Read NASA’s Chandra Finds Unexpected Fireworks in Aftermath of Stellar Explosions To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video A composite image of the nearby galaxy Messier 83, and short timelapse videos of two curious supernova remnants hidden inside. X-ray: NASA/CXC/SAO; Optical: NASA/ESA/AURA/STScI, Hubble Heritage Team, W. Blair (STScI/Johns Hopkins University) and R. O’Connell (University of Virgini
NASA's Chandra X-ray Observatory detected unexpected changes in the brightness of supernova remnants within the galaxy Messier 83. Researchers analyzed 14 years of data from the galaxy, which is 15 million light-years away. They observed that about half of the X-ray sources associated with these remnants showed significant brightness variations. This contradicted expectations, as older remnants were thought to fade gradually. The study was presented at the American Astronomical Society meeting and published in The Astrophysical Journal. One of the variable remnants, SN 1957D, is believed to be colliding with surrounding material, causing X-ray flares. However, this does not explain the other changes. The cause of the variability remains unclear, highlighting the need for further investigation.
Understanding these changes could provide insights into the complex processes occurring in the remnants of stellar explosions.
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