Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Publications 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 Quantum Lunch Archive 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 P/T Colloquia 
 Archive 
 Kac Lectures 
 Kac Fellows 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Postdocs 
 CNLS Fellowship Application 
 Students 
 Student Program 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Thursday, March 28, 2019
1:00 PM - 2:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Seminar

CANCELLED - Particle-in-Cell Simulations and Astrochemistry of Galactic and Extragalactic Star Forming Regions

Dr. Crystal Anderson

CANCELLED
Part 1: Particle-in-Cell Simulations
Recently, I have supported and developed various simulations using particle-in-cell (PIC) software (Chicago) in pulsed-power physics, high energy density physics, circuit analysis, plasma theory and strongly coupled plasma (SCP) physics. In this talk, I will discuss the scientific reasoning behind these simulations. I will also discuss previous work on algorithm implementation into Chicago. I will also describe the motivation behind the stand-alone C++ SCP code with GPU implementation. I will end this part of my presentation discussing the benchmark testing done with code developers in order to validate high performance computing algorithms for Chicago.
 
Part 2: Astrochemistry of Galactic and Extragalactic Star Forming Regions
In the second part of my talk, I will discuss the work accomplished for my dissertation. The physical processes that determine how molecular clouds fragment, form clumps/cores and then stars depend strongly on both recent radiative and mechanical feedback from massive stars and, on longer term, through enhanced cooling due to the buildup of metals. Radiative and mechanical energy input from stellar populations can alter subsequent star formation over a large part of a galaxy and is hence relevant to the evolution of galaxies, but to understand the overall evolution of star formation in galaxies we need to watch the feedback processes at work on giant molecular cloud (GMC) scales. By doing this we can begin to answer how strong feedback environments change the properties of the substructure in GMCs. Applying the theory of Galactic star formation to other galaxies has been a challenging process due to the lack of resolution with previous instruments. However, due to current radio interferometry we are able to resolve nearby galaxies GMCs on galactic scales.  In this talk, I discuss observations of molecular gas tracers (e.g. HCO+, HCN, HNC, CS, C2H, N2H+) in nearby dwarf galaxies, the Galactic Center and the Large Magellanic Cloud.


Host: Jonas Lippuner