Physics News of the Week: On Magnetic Monopoles and Black Holes

| June 2, 2013 | 0 Comments

This week once again we have a bunch of interesting news from physicists from all around the globe. As always, if you would like to receive these news straight to your email, please register for our email newsletter.

1. Blazars Measure Extragalactic Background Light (May 27)

A new way of measuring the extragalactic background light was developed by an international group of researchers. The technique involves measuring the attenuation of high-energy gamma rays from distant blazars and it could improve our understanding of how galaxies form and evolve, as well as how the universe has expanded since the Big Bang. More on this discovery here.

2. Loop Quantum Gravity Theory Applied to Black Holes (May 31) 

Rodolfo Gambini and Jorge Pullin of University of the Republic in Montevideo, Uruguay, and Louisiana State University respectively, have applied the loop quantum gravity theory to black holes. While doing so they have provided an argument that, at the center of black hole, there might be a “portal” to another part of the universe, or even another universe.

For a long time the leading theory of describing the beginning of the universe has been the Big Bang theory, which states that the universe started from a singularity. The problem with such an approach is that Einstein’s theory of general relativity breaks down at the singularity, which can also be found at the heart of black holes. To avoid these issues, the mentioned scientists applied the loop quantum gravity theory. The interesting result of their research is that, according to the paper, everything that was pulled into the black hole doesn’t compress to a singularity after all—instead it is compressed to a finite size that is then spit out to another part of a universe, or another universe altogether. Read the full article here, also the research paper can be found here.

3. Artificial Magnetic Monopoles Created (May 31)

Researchers from Cologne, Munich and Dresden have managed to create artificial magnetic monopoles. In order to do this, scientists merged tiny magnetic whirls called skyrmions. At the point of merging, the physicists were able to create a monopole, which has similar characteristics to a fundamental particle postulated by Paul Dirac in 1931. The question of whether magnetic whirls can be used in the production of computer components one day is currently being researched by a number of groups worldwide. Read the full report here.

Other news:

NASA’s Magnetospheric Multiscale Team Assembles Final Observatory
Radiation Measured by NASA’s Curiosity on Voyage to Mars Has Implications for Future Human Missions
Asteroid Has Its Own Moon, NASA Radar Reveals

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