Physics news

'Natural Nucleur Accelerators'

At www.physorg.com/print201279930.html there is a report on a paper in Physcial Review Letters with some interesting discoveries, one of which is that high energy cosmic rays were thought to come from remote galaxies that contained huge black holes capable of eating stars and accelerating protons like a bullet shooting out of a gun barrel. These protons, referred to as cosmic rays, travel through space and eventually enter our galaxy - the theory assumes.

Dark Attractors

At www.dailygalaxy.com August 16th .... 'Dark Attractors Believed to Shape the Universe' is the headline. The science community do not know what invisible or dark matter is but they think they know that it is out there and that without dark matter there would be no galaxies, no stars or planets, no life as we know it.

Supernovae and Amino Acids

A peculiar story is this one, and it was suitably published in Astrobiology as 'Supernovae and the Chirality of the amino acids' (but see www.liebertonline.com/doi/10.1089/ast.2009.0427?utum_source=io9+News but probably the peculiarity is due to the latter rather than the former. It appears to be an attempt to explain left handed amino acids and the virtual exclusion of right handed ones.

Novas emitting huge gamma ray bursts

At www.dailygalaxy.com August 14th ... gamma rays were thought only to come from supernovae but amateur astronomers in Japan have changed that view. They imaged a change in brightness of a small star in the constellation of Cygnus, ten times brighter than it had been a couple of days before, and reported the discovery of a nova event, a short lived brightening of an otherwise inconspicuous star. Novas are thought to occur when a white dwarf in a binary system erupts in an enormous thermo-nucleur explosion.

electron fractionalisation

At www.physorg.com/print200828132.html there is a report on a paper in Physical Review Letters 105, 057201 (2010) concerning the puzzle of electrons as they fractionalise into two separate quasi-particles, spinons and chargons, which carry spin, and charge, respectively, This is known as spin-charge separation and this paper is basically a new theory to explain what happens.

Big Bang

At www.dailygalaxy.com August 11th ... Casey Kazan wonders why the prevailing Big Bang theory predicts all galaxies should be evenly distributed on the outer rims of the initial expanding explosive force, but aren't. Galaxies move in the wrong directions, at different speeds, and collide into one another from every conceivable angle throught the Hubble Length Universe. Hundreds of millions of galaxies appear to clump together forming super clusters while great walls of galaxies are separated by apparently vast voids of empty space.

Space Time may be just a mirage?

At www.dailygalaxy.com August 10th ... Casey Kazan is winding people up again by questioning space time. Quoting a scientist from Berkely University in California, Peter Horava, who wants to split time apart from space in order to reconcile quantum mechanics with the mystery of dark energy (source New Scientist). The problem is that if he is right it will require a major overhaul of black hole physics.

Are physicists making up dark energy?

This story was sent in by Gary Gilligan and is interesting as it represents the problem from an astro-physicist that believes dark energy is real rather than a critique from a detractor. He is the author of a popular book and can be read on a regular basis at http://io9.com/5607692/are-physicists-making-up-dark-energy/ and as well as the article itself some of the comments following it are also just as interesting - the interaction between supporters of the consensus as opposed to the irreverent.

Strings and Things

At www.physorg.com/print200224981.html physicists use an offshoot of string theory to describe the puzzling behaviour of super conductors - material that conducts electricity without resistance. Published in Science August 5th

What the Large Hadron Collider is doing - in a nutshell

At www.physorg.com?print199730102.html the experiment at the Large Hadron Collider is described - and the objectives. This actually appears in an earlier posting but is not described in such simple layman's terms as in this article. A number of lead atoms travelling very near the speed of light will collide in the experiment, generating a fireball 100,000 times hotter than the core of the Sun.