Researchers from around the world have teamed up to build the High-Altitude Water Cherenkov (HAWC) gammy-ray observatory, an array of hundreds of huge water tanks on a mountain in Mexico. HAWC helps astrophysicists spot active cosmic neighborhoods by capturing the shower of particles created when high-energy packets of light smash into the earth's atmosphere. This material relates to a paper that appeared in the Nov. 17, 2017, issue of Science, published by AAAS. The paper, by A.U. Abeysekara at University of Utah in Salt Lake City, UT, and colleagues was titled, "Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth."
Relatively Certain is a production of the Joint Quantum Institute, a research partnership between the University of Maryland and the National Institute of Standards and Technology. This episode of Relatively Certain was produced by Chris Cesare, Sean Kelley and Emily Edwards and edited by Chris Cesare and Kate Delossantos, featuring music by Dave Depper, Podington Bear, Kevin MacLeod and Chris Zabriskie
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