## 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)"

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.

Title/Abstract: 1. 10,000 solar mass black hole in NGC 4395 - primordial or no AGN feedback? I will present the reverberation-mapping study of the lowest-luminosity Seyfert 1 galaxy NGC 4395, based on the monitoring campaign in 2017 and 2018. The time delay of the Hα emission is measured as 83±14 min.. Combining with the Hα … Continue reading "CRA seminar (Prof. Jong-Hak Woo)"

Web: https://ccrg.rit.edu/user/jacob.lange Title: RIFT'ing the Waves: An algorithm to perform Rapid parameter inference on gavitational wave sources via Iterative FiTing Abstract: As the gravitational wave (GW) observatories get more sensitive, the number of confident detection will grow exponentially. Conventional parameter estimation (PE) algorithms have to use specifically-tuned settings with fast waveform models to estimation parameters … Continue reading "CRA Seminar by Jacob Lange (RIT)"

Web: "https://space.mit.edu/people/london-lionel-t" Title: On the gravitational wave multipole moments of systems with angular momentum Abstract: Since Einstein's quadrupole formalism, multipolar analysis has played a central role in gravitational wave theory. In particular, gravitational waves from compact sources are ubiquitously represented using spin weighted spherical harmonic multipoles. But there is good reason to expect that a … Continue reading "CRA seminar by Dr. Lionel London (MIT)"

Web:https://phys.washington.edu/people/sanjay-reddy Title: Neutron stars in the multi-messenger era Abstract: About 50 years after their discovery, neutron stars are poised to take center stage in this era of multi-messenger astrophysics.  I will highlight advances in theory and key observations including GW170817 that have provided fundamental new insights about neutron star properties and their central role in … Continue reading "CRA seminar by Dr. Sanjay Reddy (University of Washington)"

Web: https://sites.google.com/view/jcbecker/ Title: Forming hot Jupiters: observational constraints on gas giant formation and migration Abstract: The three commonly considered pathways for hot Jupiter formation are in situ formation, runaway accretion in the outer disk followed by disk migration, and tidal migration (occurring after the disk has dissipated). None of these explains the entire observed sample … Continue reading "CRA Seminar by Dr. Juliette Becker (Caltech)"

Web: https://dark.nbi.ku.dk/people/marianne/ Title: Determining black hole masses of active galactic nuclei across cosmic time Abstract: Observations show that supermassive black holes can affect their environment through outflows and other feedback processes. In order to establish the exact role that supermassive black holes play for galaxy evolution, we need to determine accurately the mass of the … Continue reading "CRA Seminar by Prof. Marianne Vestergaard (Niels Bohr Institute, Univ. of Copenhagen)"