PHYSICAL REVIEW FOCUS 13 March 2007 http://focus.aps.org/
David Ehrenstein, American Physical Society
Introductions to the Focus stories of the past week;
visit http://focus.aps.org for the complete stories.
TURNING STARLIGHT INTO GAMMA RAYS
Extremely high energy gamma rays coming from a region in the
constellation Cygnus have stumped astronomers. But in an upcoming
issue of Physical Review Letters, researchers propose that the
mysterious rays are produced by fast-moving nuclei that give a
"double boost" to ultraviolet photons from stars, multiplying
their energy one trillion times. The model may also account for
high-energy nuclei seen in cosmic rays that rain down on Earth
from all directions.
(Luis A. Anchordoqui et al., Phys. Rev. Lett. to be published)
COMPLETE Focus story at http://focus.aps.org/story/v19/st8
Also from PRL (story from AIP's Physics News Update):
SPONTANEOUS SYMMETRY BREAKING IN WOMEN'S GENES
Story at http://www.aip.org/pnu/2007/split/813-1.html
Mario Nicodemi and Antonella Prisco, Phys. Rev. Lett. 98, 108104)
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Copyright 2007, The American Physical Society.
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