String revival: Are cosmic strings behind unusual lensing effects?

Article Abstract:

Cosmic strings are hypothetical one-dimensional defects in the fabric of space-time, which fell out of favor in the late 1990s, are making a comeback. The mysterious behavior of a double quasar near the Big Dipper can be the best explained by an intervening loop of cosmic string. The moving cosmic string would act as an additional gravitational lens affecting both quasar images simultaneously.

Science & research, Research, Astronomical bodies, Cosmic strings

---

Rare flare: odd magnetar burst partly solves gamma-ray riddle

Article Abstract:

The giant flare of December 27th, 2004, produced by a bizarre star in the Milky Way galaxy, is providing a partial solution to a 10-year-old astrophysical mystery. Astronomers believe that long gamma-ray bursts, all detected in remote galaxies, signal the catastrophic and terminal detonation of supermassive, rapidly spinning stars.

Milky Way, Stellar oscillations

---

Dark riddles

Article Abstract:

The possibility that the distribution of dark matter in a distant cluster of galaxies might be influenced by a yet unknown fifth force of nature is discussed.

Dark matter (Astronomy), Natural history, Galaxies, Orbiting astronomical observatories, Astronomical satellites, Galaxy clusters, Dark matter, Chandra X-ray Observatory (Artificial satellite)

Similar abstracts:

• Abstracts: Illuminating the future for bioremediation. Analyzing toxicants on a chip. Science panel confirms low-dose estrogenic effects
• Abstracts: Biodegradation of styrene in samples of natural environments. Effect of aging of chemicals in soil on their biodegradability and extractability
• Abstracts: World's largest constructed marsh begins cleansing everglades. Bypass channel to aid fish at venerable Pennsylvania Dam
• Abstracts: Leveling the playing field: Economic development helps women pull even with men. The honeymoon is over
• Abstracts: Avoiding another Vioxx: Guarding against unsafe drugs means major changes. Register or Perish

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.