In the KIPAC Visualization Lab - and in major planetariums - visitors can watch three dimensional movie renderings of processes from the history of the Universe. KIPAC scientists use novel computer graphics techniques to produce and display the animations, which are based on the results from computational simulations. Image from a movie showing a simulation of the... Read More
By the end of the decade, the Large Synoptic Survey Telescope (LSST) will begin gazing at the sky and revolutionizing the study of dark energy and astronomy. Today, however, scientists are already hard at work learning how to analyze LSST's unprecedented amount and complexity of data with the Image Simulator. Simulated image of a galaxy as seen by LSST, including... Read More
Active galactic nuclei reveal the presence of enormous amounts of matter interacting with a supermassive black hole at the center of a galaxy. Because galaxies merge over the history of the Universe, we should see the signatures of supermassive black holes merging in some places. An analysis of X-ray observations may have shown just that. X-ray image of SDSS... Read More
Gamma-ray observations of the Universe by the Fermi Gamma-ray Space Telescope have enabled another astrophysical constraint on the properties of particle dark matter. The Fermi Gamma-ray Space Telescope continues to bridge astronomy and particle physics. Many observations in astrophysics make it clear that the matter content of the Universe is dominated by dark... Read More
Simulating the evolution of the early Universe on computers is the starting point for cosmologists' understanding of structure formation in the cosmos. With techniques to pursue both a large volume of simulated universe and high spatial resolution, KIPAC researchers are leading the charge against one of the foremost computational challenges in astrophysics. Multi-... Read More
The Fermi Gamma-ray Space Telescope, famous for probing the Galaxy and distant reaches of the Universe, has now seen its first flare from our own Sun. Ultraviolet light image of a solar flare, seen as a bright patch by NASA's Solar Dynamics Observatory (SDO) satellite. One of the three main instruments on SDO was built at Stanford. Since gamma rays are the... Read More
An analysis of X-ray observations has provided the clearest picture to date of the size, mass, and matter content of a giant cluster of galaxies. The study also provides the first direct evidence that the multi-million-degree gas in the cluster's outskirts is clumped into enormous clouds. X-ray images of the Perseus cluster on top of an optical one. The colors... Read More
A new prediction of the density and velocity distribution of dark matter particles at our position in the Galaxy has provided a revised estimate of the likely detection rates for dark matter in particle physics experiments. Typical conception of the halo of dark matter surrounding the Galaxy. Looking at all of the bright stars in the sky, it is easy to forget... Read More
Unifying the astronomically near and far, the Fermi Gamma-ray Space Telescope has seen its first signature of cosmic rays interacting with the light from our Sun. The left panel shows the LAT gamma rays per pixel from near the Sun and the right panel shows the same for another patch of sky. There is a clear large flux from the solar disk and a less dense but... Read More
A KIPAC researcher uses images of very distant galaxies to learn about somewhat nearer galaxies, through the phenomenon of gravitational lensing. The right panel shows a background galaxy with the image of the lens galaxy (in the center) removed. A proper model of the mass distribution of the lens galaxy results in the reconstructed shape for the background galaxy... Read More