Astrophysics Seminars

ABSTRACT: I will present some early results from 'the Tractor', a new approach for measuring astronomical sources in collections of images that David Hogg (NYU) and I have been developing. The idea to use generative (forward) modeling: we want to...

ABSTRACT: I present the results of atmospheric general circulation modelling experiments for Earth-like planets in tidally locked configurations. The factors controlling the atmospheric circulation, which transports heat from the day side to the...

ABSTRACT: For several decades, observational studies of supernova (SN) explosions have focused almost exclusively on the optical emission that dominates their bolometric luminosity. Yet many of the leading breakthroughs in our understanding of...

ABSTRACT: We know very little about primordial curvature perturbations on scales smaller than about a Mpc. I review how mu-type distortion of the Cosmic Microwave Background spectrum provides the unique opportunity to probe these scales over the...

ABSTRACT: OGLE-IV, in operation since March 2010, is one of the largest sky surveys worldwide, regularly monitoring about one billion objects and collecting over 30 TB of raw data per year with the new generation 32-chip CCD mosaic camera...

ABSTRACT: Star cluster ecology is the field of research where stellar evolution, gravitational dynamics, hydrodynamcs and the background potential dynamics of the parent galaxy interact to a complex non-linear evolution of self gravitating...

The Bar and Spiral Structure Legacy (BeSSeL) Survey is an NRAO Key Science Project that has been awarded 5000 hours of VLBA observing time from 2010 to 2015. Results from the first year's observations will be presented. A major goal is to determine...

ABSTRACT: The last few years have seen a tremendous increase of observational data regarding the properties of extrasolar planets. High precision radial velocity and transit observations have yielded large datasets which are important to improve our...