Distant Quasar Illuminates a Filament of the Cosmic Web

01/21/2014 02:52PM

Distant Quasar Illuminates a Filament of the Cosmic Web

Astronomers have discovered a distant quasar illuminating a vast nebula of diffuse gas, revealing for the first time part of the network of filaments thought to connect galaxies in a cosmic web. Cosmologists generally believe that matter in intergalactic space is distributed in a vast network of interconnected filamentary structures of gas known as the cosmic web. The vast majority of atoms in the Universe reside in this web as primordial hydrogen -- vestigial matter left over from the Big Bang. Researchers from the University of California at Santa Cruz and the Max Planck Institute for Astronomy have now captured an image of these filamentary structures for the first time. To achieve this, they exploited the intense radiation generated by a supermassive black hole in a quasar.


Comments:

Thanks for sharing this article, it is a great discovery and very helpful to bolster my outreach work on magnetism related to THEMIS/ARTEMIS. I am submitting a few grants to develop new K-12 curriculum to explain the importance of magnetism not just in electronics and hybrid cars, but in the very existence of life on earth (due to magnetospheric shielding of our atmosphere and water), and the mechanism of solar system formation and water condensation that led to our biomolecules (see here: http://news.rpi.edu/content/2013/09/30/rensselaer-researchers-propose-new-theory-explain-seeds-life-asteroids). <br><br>On a related note, I wanted to share a fascinating documentary about the "electric universe", it presents some interesting hypotheses about electricity and magnetism affecting early human culture (via the aurorae), and challenges the viewer to consider the dominance of plasmas and the related electromagnetic processes that occur in the vast majority of our universe.<br><br>http://www.youtube.com/watch?v=5AUA7XS0TvA<br><br>While it provides a lot of useful background info and points out some possible alternatives to ideas like dark matter, some of the conclusions are a bit far-fetched and have been rejected by my physics friends but still it makes you think outside the box. I never even realized there was an ideological battle between gravity and electromagnetism as the main force in our universe, which is a bit silly since clearly both are involved though we cannot yet explain how they are linked. Our missions are revealing more about the intricacies of space electromagnetism on the microscale near Earth, and very soon new missions will begin to fill in the gaps at the sun and interstellar and galactic scales, and beyond. If anyone gets around to watching it, curious to hear your thoughts.<br><br>Once again, thanks for your excellent choice of news stories (keeps me distracted from shopping too)!<br><br>-E