The Formation of Population III Binaries from Cosmological Initial Conditions.
Simulation by Matthew Turk, Tom Abel, and Brian O'Shea. Image by Ralf Kaehler.
Still from a simulation depicting an early stage of a gamma-ray burst. Collaborators: Stan Woosley (UCSC) and Weiqun Zhang (Stanford University).
"Simulated Observations" generated using the Sunrise code.
Image credit: Chris Moody
BigBolshoi Cosmological Simulation. Image Credit: Stefan Gottloeber (AIP)
Simulated Observations generated using the Sunrise code. Image Credit: Patrik Jonsson (Harvard/CfA)

The purpose of the University of California High-Performance AstroComputing Center (UC-HiPACC) is to realize the full potential of the University of California world class resources in computational astronomy. Read the letter from the Director

Call for Proposals for Grants

UC-HiPACC Director Joel Primack announces a call for proposals in 4 categories: small travel grants, working group grants, matching grants for astrocomputing equipment purchases, and innovative initiative grants.

October 2014 AstroShort: Without a Trace — Almost
This image is a slice through the interior of a supermassive star of 55,500 solar masses. This snapshot shows a moment one day after the onset of the explosion, when the radius of the outer circle would be slightly larger than that of the orbit of the Earth around the sun. Credit: Ken Chen, UC Santa Cruz

It was a classic case of serendipity. While investigating how supermassive black holes formed in the early universe, UC Santa Cruz postdoc Ke-Jung Chen stumbled on the discovery that some truly monstrous primordial supermassive stars could explode without leaving any black hole or other stellar remnant behind.

Read the AstroShort Without a Trace — Almost


posted: 2014-10-27 16:11:16
Bioinformatics fight Ebola; cybertools in Hong Kong; data-mining Exxon Valdez; Johnny Depp; & computational sarcasm
Model of vesicle adhesion, rupture and island dynamics during the formation of a supported lipid bilayer featured on the cover of the journal Soft Matter. Credit: Peter Allen

Bioinformatics attacking Ebola and superbugs, new X-ray “nanoscope” (microscopy at the nanoscale), cybertools’ dark side in Hong Kong’s democracy movement, Google Earth Engine predicts malaria outbreaks, data-mining the Exxon Valdez oil spill, digitizing humanities research, Southern Hemisphere ocean warming underestimated (uh-oh), studying the endangered Irish tongue—literally, soft architecture/soft matter, big bucks for big data initiatives, why we all don’t look alike + telling Johnny Depp from his stunt double, and teaching computers to recognize sarcasm (you’re kidding, right?). Read these and other stories in the UC-HiPACC Data Science Press Room http://hipacc.ucsc.edu/dataSciRoom.php. Like us on Facebook and follow us on Twitter.

posted: 2014-10-26 09:43:10
Neutrinos and planets, black holes, oh my

Some supermassive primordial stars could explode completely without leaving a supermassive black hole, sterile neutrinos still elude detection, an experimental ultrahot “perfect fluid” suggests secrets about the Big Bang, an astronomer received funding to train computers to be surrogate astronomers, Claire Max takes the helm of the UC Observatories, the most brilliant and massive pulsar was just discovered, and a team mapped the blast-furnace atmosphere of a “hot Jupiter” 260 light-years away. Check out seven recent news summaries in the UC-HiPACC computational astronomy press room. Updates highlighted on Facebook and Twitter.

posted: 2014-10-20 12:33:00
Coding magic, giving back, and dreamforcing

Kids create magic spells to learn coding, grad students work at the Large Hadron Collider, undergrads do physics research with grad student mentors, the public delights in digital arts, a national lab gives back to the community, and researchers realize the force of dreams—read more of the latest in the UC-HiPACC education and public outreach press room.

posted: 2014-10-17 16:49:18
September 2014 AstroShort—Separated at Birth: Finding our Sun’s Long-Lost Siblings?

Any stars born of the same giant molecular cloud always show the same “DNA fingerprint” of chemical abundances of trace elements. But most groups of stars drift apart, eventually even ending up on opposite sides of a galaxy—as likely happened with our Sun. Thus, astronomers have long wondered whether it might be possible to tell if two stars now on opposite sides of the galaxy were born billions of years ago from the same cloud. New simulations explain why, and offer hope: might it be possible to find our own Sun’s long-lost siblings?

Read the AstroShort Separated at Birth: Finding our Sun’s Long-Lost Siblings?


posted: 2014-09-19 10:41:47
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  • On October 14, Oak Ridge National Lab highlighted UC-HiPACC's 2014 advanced International Summer School on AstroComputing (ISSAC) in the story "Supernova Summer School on the Road to Exascale"

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  • In the June, 2014, Sky & Telescope, Sandra M. Faber, Henry C. Ferguson, David C. Koo, Joel R. Primack, and Trudy E. Bell explain how Hubble’s single largest observing program is detecting the earliest galaxies, finding the most distant supernovae, and revealing the fireworks-like peak of star formation at cosmic high noon.

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