A telescope made of water—HAWC, high in Mexico’s mountains—has begun monitoring the heavens to capture the Universe’s most violent events. Link to AstroShort
The Southern California Center for Galaxy Evolution (CGE) and the University of California High-Performance AstroComputing Center (HiPACC) are bringing together theorists and observers for a three-day conference on the Near-Field Deep-Field Connection. Topics to be covered include (1) local relics of reionization, (2) connections between first stars and local metallicity, (3) the evidence for and impact of IMF variation, (4) the CGM of the Milky Way and beyond, (5) dwarf galaxies at high and low z, and (6) star-formation histories near and far.
The Near-Field Deep-Field Connection February 12-14, 2014 Beckman Center of the National Academies, Irvine, CA
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UC-HiPACC will support focused working groups of UC scientists from multiple campuses to pursue joint projects in computational astrophysics by providing funds for travel and lodging. At the heart of UC-HiPACC are working groups. These groups will typically consist of collaborations of two to a dozen people, in practice mostly graduate students and post-doctoral fellows, from two or more UC campuses or DOE labs. Periods will typically range from a few days to a few months. UC-HiPACC funding can provide career-shaping opportunities for students in which they learn from other leading faculty members, master skills not taught on their own campus, line up writers for crucial letters of recommendation, and form other contacts and alliances that can powerfully shape their future careers. Some collaborations will also bring together senior astrophysicists with computer scientists and engineers to extend the state of the art in computation and data analysis. More Information
Streaming through deep space today in some form is almost all the light that all galaxies have ever radiated. Capturing those precious ancient photons of extragalactic background light allows astronomers to deduce details about the grand story of cosmic origin.
How much light has been emitted by all galaxies since the cosmos began? The Universe is suffused in a bath of almost every photon (particle of light) from ultraviolet to far infrared wavelengths ever radiated by all galaxies that ever existed throughout cosmic time. An accurate measurement of this extragalactic background light (EBL) is as fundamental to cosmology as measuring the heat radiation left over from the Big Bang (the cosmic microwave background) at radio wavelengths. A new paper, called "Detection of the Cosmic γ-Ray Horizon from Multiwavelength Observations of Blazars," by Alberto Dominguez and six coauthors, just published by the Astrophysical Journal—based on observations spanning wavelengths from radio waves to very energetic gamma rays, obtained from several NASA spacecraft and several ground-based telescopes—describes the best measurement yet of the evolution of the EBL over the past 5 billion years.