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Astronomy & Astrophysics
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Postdoctoral Scholars Research

Our current postdoctoral scholars are engaged in a wide variety of research projects summarized below.

Clement Baruteau
Clement's research interests include the dynamics of astrophysical disk and the formation and evolution of planetary systems. His main focus is to study the tidal interaction of forming planets with their protoplanetary disk, under which planets should undergo an orbital decay toward the central object. This process, known as planetary migration, plays the major role in the building of planetary systems.

Rychard J. Bouwens
Rychard J. Bouwens uses data from the largest optical and infrared telescopes in space and on the ground to characterize galaxies forming at the dawn of the universe (within the first billion years). He has been a leader in the identification large, statistically interesting samples of star-forming galaxies at extremely high redshifts (z ~ 4 - 8) and using these samples to determine how galaxies evolve in size, luminosity, volume density, dust extinction, and star formation rate at the earliest times.

Fabio De Colle
Research Interests
The study of stellar jets, by numerical simulations, inverse theory, data analysis, etc.
Numerical simulations of astrophysical fluids (jets, disks, supernova remnants, stellar winds and coronae, ...).
Code development: development/implementation of numerical methods for the integration of hyperbolic equations, adaptive mesh refinement and code parallelization.
Analytical and numerical calculations of the structure of disks around young stellar objects.

Juerg Diemand
Juerg is a Hubble Fellow (SNF Fellow until 9/2006) at UCO/Lick Observatory. His main research interest is the formation of dark matter structures in Cosmology. He also works on the distribution of the first black holes and the kinematics of stellar halos and globular cluster systems.

Aaron Dutton Canandace Church
Aaron is a postdoc working in the DEEP2 team, studying the structure and formation of galaxies. His main research interests are: disk galaxy formation models; scaling relations of dark matter haloes in cosmological simulations; observed scaling relations of disk galaxies at low and high redshift; distribution of baryons and dark matter in low redshift galaxies.

Fulai Guo Canandace Church
Fulai studies the evolution of the hot, diffuse, X-ray emitting gas in clusters and groups of galaxies, using
both analytical methods and numerical simulations. In particular, his research focuses on the effects of AGN feedback and non-thermal components on the intracluster medium. He is also interested in black hole accretion flows, cosmic ray physics, and galaxy formation and evolution.

Sarah Hansen
Sarah is a postdoc in observational astrophysics at UC Santa Cruz. She is particularly interested in the formation and evolution of galaxies, galaxy clusters & large-scale structure, and in how to use this information to investigate cosmology. Previously Sarah was at the University of Chicago where she did her Ph.D. thesis on the correlation between the optical and Sunyaev-Zel'dovich signals from galaxy clusters in the SZA survey.

Tesla Jeltema
Tesla is a Morrison Fellow at the UCO/Lick Observatories. Her research has included observations at X-ray and optical wavelengths and numerical simulations. In the near future, it will also include gamma-ray observations with GLAST. Her research interests fall in to a few broad categories, including large-scale structure (clusters and groups of galaxies, cosmology), galaxy evolution, and indirect detection of dark matter.

Patrik Jonsson
Patrik studies the effects of interstellar dust and galaxy mergers on the galaxy population. He is the author of the Monte-Carlo radiation transfer code Sunrise (sunrise.familjenjonsson.org), which can be used to generate "simulated observations" of galaxies in hydrodynamic simulations. Patrik is also interested in science education and helped organize the workshop "Experiencing and Applying Inquiry in Science Learning and Teaching" by the Center for Adaptive Optics in 2008 (http://cfao.ucolick.org/EO/PDWorkshop/)

Daniel Kasen (Hubble Fellow):
Dan studies radiative transfer across a range of astrophysical environments and wavelength bands. He develops and applies large scale multi-dimensional radiation and radiation-hydrodynamics simulations. Much of his research focuses on modeling the light curves, spectra, and polarization of supernovae and other explosive transients, with an interest in scrutinizing their suitability as cosmological probes.

Elizabeth McGrath
Elizabeth is a postdoc at the CfAO and is working on developing the science requirements for the Next Generation Adaptive Optics (NGAO) system for the W. M. Keck Observatory. NGAO is a planned multiple laser guide-star system that will provide extremely high performance on-axis, as well as AO correction over wider fields of view and at shorter wavelengths than the current Keck AO system. Elizabeth's primary research interests center around understanding the formation of massive galaxies in the early Universe and their evolution over cosmic time. She works with a wide range of multiwavelength data to study the environments and global properties of these so-called "red and dead" galaxies.

Aaron Romanowsky
Aaron studies the properties of galaxies and stellar systems, both observationally and theoretically. As part of the SAGES project, his current main interest is in the halos of elliptical and lenticular galaxies at low redshift, using dynamical models combined with data from field stars, globular clusters, planetary nebulae, and X-ray emitting gas. Such tracers provide a new window into the formation history and mass content of these ancient systems.

David Rosario
David is a postdoc with the DEEP2 group. His primary research interests are in AGN physics, demographics and multiwavelength energetics, with particular expertise in Narrow Line Region dynamics and outflows. He also works on the star formation and chemical evolution of galaxies, as well as the nature of high star-forming environments, such as super star-clusters and starburst galaxies.

Sandrine Thomas
As a postdoc at the Laboratory for Adaptive optics (LAO), Sandrine works on different flavors of AO. She is interested in next generation adaptive optics for large telescopes, as well as extreme adaptive optics like the Gemini Planet Imager (GPI) designed to image planets around solar type stars. Scientifically, she is interested in star formation and binaries in general. More particularly, she has been working on intermediate mass stars (Herbig Ae Be) and on very low mass stars.

Gabor Worseck
Gabor is pursuing research on the detection of intergalactic singly ionized helium towards quasars and its implications on the reionization history of helium and the evolution of the UV background. He is also interested in radiative feedback of quasars onto the IGM and recovering the three-dimensional structure of the IGM on adjacent quasar sightlines.

  Sung-Chul Yoon
Sung-Chul works in stellar evolution theory and its applications to supernovae, gamma-ray bursts, nucleosynthesis, stellar population, and cosmology.


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