A new bound on axions
An axion is a hypothetical elementary particle whose existence was postulated in order to explain why certain subatomic reactions appear to violate basic symmetry constraints, in particular symmetry in time. The 1980 Nobel ...
An axion is a hypothetical elementary particle whose existence was postulated in order to explain why certain subatomic reactions appear to violate basic symmetry constraints, in particular symmetry in time. The 1980 Nobel ...
Astronomy
Jan 22, 2018
1
77
The development of ultra-intense lasers delivering the same power as the entire U.S. power grid has enabled the study of cosmic phenomena such as supernovae and black holes in earthbound laboratories. Now, a new method developed ...
Plasma Physics
Jan 5, 2018
11
1110
The center of our Galaxy has been intensely studied for many years, but it still harbors surprises for scientists. A snake-like structure lurking near our galaxy's supermassive black hole is the latest discovery to tantalize ...
Astronomy
Dec 20, 2017
15
877
When fast radio bursts, or FRBs, were first detected in 2001, astronomers had never seen anything like them before. Since then, astronomers have found a couple of dozen FRBs, but they still don't know what causes these rapid ...
Astronomy
Sep 21, 2017
0
59
By reproducing the complexity of the cosmos through unprecedented simulations, a new study highlights the importance of the possible behaviour of very high-energy photons. In their journey through intergalactic magnetic fields, ...
General Physics
Sep 8, 2017
0
17
High up in the clear blue noontime sky, the sun appears to be much the same day-in, day-out, year after year.
Space Exploration
Jun 28, 2017
0
80
Every day, with little notice, the Earth is bombarded by energetic particles that shower its inhabitants in an invisible dusting of radiation, observed only by the random detector, or astronomer, or physicist duly noting ...
Plasma Physics
May 16, 2017
0
24
For the first time, astronomers have detected a magnetic field associated with the Magellanic Bridge, the filament of gas stretching 75 thousand light-years between the Milky Way Galaxy's nearest galactic neighbours: the ...
Astronomy
May 12, 2017
13
886
In 2016, researchers published "slam dunk" evidence, based on iron-60 isotopes in ancient seabed, that supernovae buffeted the Earth—one of them about 2.6 million years ago. University of Kansas researcher Adrian Melott, ...
Astronomy
May 11, 2017
2
489
Radio waves, microwaves and even light itself are all made of electric and magnetic fields. The classical theory of electromagnetism was completed in the 1860s by James Clerk Maxwell. At the time, Maxwell's theory was revolutionary, ...
General Physics
Apr 11, 2017
72
6578