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CRA Cosmic Coffee: Danielle Skinner

Howey N201/202 837 State Street, Atlanta, GA, United States

  Title: Where Do Population III Stars Form? Abstract: We perform a cosmological simulation with a comoving volume of 1 Mpc^3 to study the birth-places of Population III stars, using the adaptive mesh refinement code Enzo. We investigate the distribution of host halo masses and its relationship to the Lyman-Werner background intensity. In our sample … Continue reading "CRA Cosmic Coffee: Danielle Skinner"

CRA Cosmic Coffee: Chris Evans

Howey N201/202 837 State Street, Atlanta, GA, United States

Title: Marginally Trapped Surfaces in Black Hole Mergers Abstract: For numerical simulations of black hole mergers, typically the apparent horizon that forms is of primary interest and can be used to calculate the mass and angular momentum of the merger remnant. In a generic binary black hole evolution however, the apparent horizon is only one … Continue reading "CRA Cosmic Coffee: Chris Evans"

CRA seminar (Dr. Colleen Wilson-Hodge)

Bogg 1-44 VizLab

Title: “Time Domain Astronomy with the Fermi Gamma-ray Burst Monitor in the Multimessenger Era” Abstract: On August 17, 2017, a new era in astronomy began with the detection of merging neutron stars in gravitational waves by LIGO/Virgo followed 1.7 seconds later by the detection of a short gamma-ray burst (GRB) with Fermi GBM. This short … Continue reading "CRA seminar (Dr. Colleen Wilson-Hodge)"

CRA special seminar: Jason Gallicchio and Brian Shuve (Harvey Mudd College)

Bogg 1-44 VizLab

Jason Gallicchio and Brian Shuve from Harvey Mudd College Title: Improving Tests of Quantum Entanglement by using Light from Distant Quasars Abstract: Quantum entanglement, described by Einstein as "spooky action at a distance," is both fascinating philosophically and is the basis for quantum computing and quantum encryption. For this reason, it deserves to be tested … Continue reading "CRA special seminar: Jason Gallicchio and Brian Shuve (Harvey Mudd College)"

CRA Seminar: Dr. J. Brian Pitts (University of Cambridge)

Title: Change and Observables in Hamiltonian General Relativity   Abstract: Canonical (Hamiltonian) General Relativity and the associated project in quantum gravity are said to suffer from a problem of missing change, especially in "observables": part of the "problem of time." This talk addresses this problem by reflecting on definitions of observables. Typically observables in Hamiltonian … Continue reading "CRA Seminar: Dr. J. Brian Pitts (University of Cambridge)"

CRA seminar (Hari Sundar)

Bogg 1-44 VizLab

## Scalable Space-time adaptivity for Simulations of Binary Black Hole Intermediate-Mass-Ratio-Inspirals We present a highly scalable framework that targets problems of interest to the numerical relativity and broader astrophysics communities. This framework combines a parallel octree-refined adaptive mesh with a wavelet adaptive multiresolution and a physics module to solve the Einstein equations of general relativity. … Continue reading "CRA seminar (Hari Sundar)"

CRA seminar (Prof. Rahul Prasad Nigam)

Title: Wind noise mitigation in LIGO India structure. Abstract: We will discuss the observations that necessitate a detail study of wind noise effects on the LIGO-India structure and different ways we plan to mitigate such a noise.