Research Highlights

Jun 22, 2015 | Where are they now? 
 -- An Interview with KIPAC alum Aurelien Bouvier

In the series, "Where are they now?" we check in with KIPAC alumni: where they are now, how they've fared since their days exploring particle astrophysics and cosmology at the Institute, and how their KIPAC experiences have shaped their journeys.

Jun 22, 2015 | Where are they now? An Interview with KIPAC alum Aurelien Bouvier

In the series, "Where are they now?" we check in with KIPAC alumni: where they are now, how they've fared since their days exploring particle astrophysics and cosmology at the Institute, and how their KIPAC experiences have shaped their journeys.

Jun 18, 2015 | Detecting black hole gravitational atoms in the sky (with half-diamonds)

 

By Xinlu Huang and Masha Baryakhtar

Why are there no "gravitational atoms"? 

Jun 2, 2015 | Where are they now? 
 -- An Interview with KIPAC alum Chihway Chang

In the series, "Where are they now?" we check in with KIPAC alumni: where they are now, how they've fared since their days exploring particle astrophysics and cosmology at the Institute, and how their KIPAC experiences have shaped their journeys.

May 5, 2015 | Astronomers Capture Cosmic Jet Firing Up

Using X-ray, radio, and gamma-ray observations of a distant galaxy, a multinational team of astrophysicists has seen perhaps the first live instance of the turning on of a powerful jet from a supermassive black hole.

Optical image of the region of the new jet, showing the localization of the jet with Swift's X-ray detection and the radio detection from long distance interferometry. Image courtesy of NASA.

May 5, 2015 | Bundles of Rays Raise Prospects for LSST

In order to properly design and construct LSST, and to effectively use its eventual data, scientists are devising sophisticated models to follow light through a complicated optical system that isn't yet built.

Example of ray bundle modeling for LSST: Image size (red) and measures of ellipticity (blue and purple) as a function of focal plane fine positioning relative to mirrors (z), for a simulated star image falling halfway to the outer edge of the focal plane

May 5, 2015 | Creating Magnetic Fields In The First Stars, In Computers

Newly detailed computer simulations show how magnetic fields grew in the first stars, and may change our view of the Universe's original shiny objects.

Magnetic energy map of a forming star in the simulations. Columns from left to right show increasing resolution of simulation. Rows from top to bottom show the view zooming in from far away.

May 5, 2015 | Spectroscopy for the FSRQ Zoo

KIPAC scientists have amassed detailed optical light spectra for 165 FSRQ-type blazars seen by the Fermi Gamma-ray Space Telescope. The observations can be used to learn about their violent central regions where a supermassive black hole holds sway.

Examples of optical spectra of Fermi FSRQ-type blazars as measured and presented by Shaw, Romani, and colleagues. In some the emission lines are clearly visible.

May 5, 2015 | Escaping Pulsar Particles Possibly Prominent

An intriguing new model of the emission surrounding the Vela Pulsar may explain a famous mystery in high energy astrophysics.

The left panel shows a VLA radio map of the Vela pulsar extended radio region with Fermi-LAT gamma-ray contours overlaid. The right panel shows the ROSAT satellite X-ray map with H.E.S.S. TeV gamma ray contours overlaid.

May 5, 2015 | Supernovae Tracked In Their Natural Environment

By assembling a large amount of optical data from galaxies which host supernova explosions, a KIPAC graduate student has shown that when it comes to supernovae, location matters.

Color composite images of 6 host galaxies of Type-IIb supernovae. The positions of the supernovae are indicated by white circles.

May 5, 2015 | Blazar Evolution With Cosmic Archaeology

Peering into the past, KIPAC scientists use Fermi gamma-ray telescope observations to unlock the story of blazar evolution over the history of the Universe.

The density of FSRQ type blazars in the Universe as a function of time. The present time is at the far left of the graph and higher redshift means farther back in time. The density is shown as number per cubic megaparsec, which is a large unit of volume.

May 5, 2015 | Missing Dark Matter Satellites Still Missing

Simulations based on our current understanding of dark matter predict a larger number of small dwarf satellite galaxies around our Milky Way than are observed. Now work by KIPAC scientists has shown that this discrepancy is more universal.

This early image of the very nearby Andromeda Galaxy, published in 1899, shows several dwarf satellite galaxies around it.