Astrophysics

Published September 14, 2009

Astrophysics Nuclear Physics

Simulations support the prediction that when nuclei are squeezed to high densities in the core of a supernova, they merge into exotic shapes such as rods and slabs.

Published August 31, 2009

Astrophysics Nuclear Physics Particles & Fields

The Moon might be stranger than we think.

Michael Wiescher, Physics 2, 69 (2009) – Published August 17, 2009

Astrophysics Nuclear Physics

Advances in experimental techniques that measure nuclear reactions that occur in stars are opening new opportunities for understanding the stellar and chemical evolution of our Universe.

Aaron Pierce, Physics 2, 44 (2009) – Published May 26, 2009

Particles & Fields Astrophysics

New connections have been made between experimental astrophysical signatures and theories that unify the electromagnetic, weak, and strong forces, called grand unified theories.

Published May 26, 2009

Astrophysics Cosmology Particles & Fields

Detectors buried beneath the Antarctic ice place stringent limits on the presence of dark matter particles, called neutralinos, in the sun.

Bruce Winstein, Kathryn M. Zurek, Physics 2, 37 (2009) – Published May 4, 2009

Particles & Fields Astrophysics Cosmology

New results from the Fermi Gamma-Ray Space Telescope, the most precise to date in the energy range 20 GeV to 1 TeV, should help resolve whether cosmic rays composed of the lightest charged particles, i.e., electrons and positrons, come from dark matter or some other astrophysical source.

Simon Swordy, Physics 2, 10 (2009) – Published February 2, 2009

Astrophysics Particles & Fields Cosmology

Many cosmologists believe that antiprotons in cosmic rays come from the annihilation of dark matter. Data from the PAMELA experiment on board a Russian satellite provide an important test of this possibility.

Karl van Bibber, Physics 2, 2 (2009) – Published January 5, 2009

Astrophysics Particles & Fields Cosmology

New upper limits on the spin-independent interaction of WIMPs and nucleons marks the latest volley in the worldwide effort to detect and identify particle dark matter.

Stuart D. Bale, Physics 1, 42 (2008) – Published December 22, 2008

Astrophysics Plasma Physics

New satellite measurements may help solve the puzzle of how the sun’s energy heats the corona and solar wind.

Karl-Heinz Kampert, Physics 1, 37 (2008) – Published November 24, 2008

Astrophysics

Unusual localized excess fluxes of cosmic rays of unknown origin have been observed at an energy of 10 TeV. Several explanations are being considered, but none are convincing.

Michael E. Peskin, Physics 1, 14 (2008) – Published August 18, 2008

Particles & Fields Astrophysics Accelerators

New arguments based on astrophysical phenomena constrain the possibility that dangerous black holes will be produced at the CERN Large Hadron Collider.

Michael L. Cherry, Physics 1, 9 (2008) – Published August 4, 2008

Particles & Fields Astrophysics

Forty years ago, it was predicted that there would be a sharp cutoff in the intensity of the very-high-energy cosmic rays that strike the earth’s surface. Two collaborations—the HiRes and Auger telescopes—are providing compelling evidence for this so-called “GZK effect.”