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Health & Science4h 26m ago
Astronomers detected dramatic, unexpected changes in the X-ray brightness of supernova remnants in the Messier 83 (M83) galaxy.
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Pasadena, California (American Astronomical Society meeting); Messier 83 (M83) galaxy
Who
astronomers, Andrea Prestwich, Michael McCollough, Roy Kilgard, Zoe Hoiland, NASA's Chandra X-ray Observatory
What
Astronomers detected dramatic, unexpected changes in the X-ray brightness of supernova remnants in the Messier 83 (M83) galaxy.
When
Mon, 15 Jun 2026 21:20:07 GMT · 4h 26m ago
Where
Pasadena, California (American Astronomical Society meeting); Messier 83 (M83) galaxy ·
Why
Researchers found that roughly half of the 22 X-ray sources associated with supernova remnants showed unexpected changes in X-ray brightness over 14 years, leading to hypotheses about stellar survivor stars and high-mass X-ray binaries (HMXBs).
The Frontline Impact
How this affects you
The discovery of unexpectedly variable supernova remnants suggests that many stellar explosions leave behind a black hole or neutron star orbiting a surviving companion, or that explosion debris is being recaptured. This challenges previous assumptions about the stability of supernova remnants and expands understanding of high-mass X-ray binaries.
Story chain
9 events in this thread- Health & Science4h 26m agoAstronomers found that roughly half of the 22 X-ray sources associated with supernova remnants in M83 showed unexpected changes in X-ray brightness over 14 years of observations.Open article
- Health & Science4h 26m agoAstronomers using NASA's Chandra X-ray Observatory found supernova remnants in galaxy Messier 83 (M83) showing unexpected dramatic changes in brightness over 14 years.Open article
- Health & Science4h 26m agoAstronomers found a population of supernova remnants in the M83 galaxy showing dramatic changes in their brightness over 14 years.Open article
- Health & Science4h 26m agoAstronomers using NASA's Chandra X-ray Observatory found that half of the 22 supernova remnants observed in galaxy M83 showed unexpected changes in their X-ray brightness over 14 years.Open article
- Health & Science4h 26m agoAstronomers found a population of supernova remnants in the nearby galaxy Messier 83 (M83) showing dramatic changes in their brightness, a discovery presented at the American Astronomical Society meeting and published in The Astrophysical Journal.Open article
- Currently Reading4h 26m agoAstronomers detected dramatic, unexpected changes in the X-ray brightness of supernova remnants in the Messier 83 (M83) galaxy.
- Health & Science4h 26m agoAstronomers found a population of supernova remnants in the nearby galaxy M83 showing dramatic changes in their brightness, contrary to expectations.Open article
- Health & Science4h 26m agoAstronomers using NASA's Chandra X-ray Observatory found a population of supernova remnants in the nearby galaxy Messier 83 (M83) showing dramatic changes in their brightness over 14 years.Open article
- Health & Science4h 26m agoAstronomers using NASA's Chandra X-ray Observatory found that roughly half of 22 supernova remnants in M83 showed unexpected changes in X-ray brightness over 14 years.Open article