Category: Uncategorized

  • Wide-Field Direct Radio Imaging

    Wide-Field Direct Radio Imaging

    After implementation of the EPIC correlator on the Long Wavelength Array in New Mexico, my attention turned to understanding how to solve the problem of imaging wide fields of view with a direct imaging telescope such as EPIC. In radio interferometry this is a serious problem for arrays that are not built on a flat…

  • Introductory Statistics Examples

    When I first started working in statistics and data processing algorithms, or “Machine Learning” which has become the general term for a broad collection of methods like this, I found it difficult to navigate a seemingly disjointed literature. Literature was either very theoretical, such as laboriously proving convergence criteria for different learning methods, or applied…

  • Chaotic Double Pendulum in Julia: from Theory to Implementation

    Chaotic Double Pendulum in Julia: from Theory to Implementation

    I recently started getting interested in Julia after people insisting I look into it more. Unrelated to that, I have always enjoyed solving Classical Mechanics problems, so decided to try and combine the two with a very familiar problem: The Chaotic Double Pendulum. This is a nice, tractable problem that lets the ODE solving capabilities…

  • A Practical Introduction to Nested Sampling: Part 2

    A Practical Introduction to Nested Sampling: Part 2

    In Part 1 of this introduction to nested sampling scheme we grappled with how to search a likelihood space where we already had a ground truth programmed in, resulting in a fairly trivial example. This was sufficient for introducing the schema and general area, and taxonomy. Next we will take this to a more real…

  • A Practical Introduction to Nested Sampling: Part 1

    A Practical Introduction to Nested Sampling: Part 1

    During my PhD, I have been lucky to be supervised by a pretty famous Bayesian, Steve Gull, who by proxy introduced me to John Skilling, the inventor of Nested Sampling [1]. My PhD went in half a dozen different directions, most of them well explored, and the Bayesian side of Radio Astronomy was something I…

  • My Org-Mode Workflow

    My Org-Mode Workflow

    I have been a massive fan of Emacs ever since my PhD supervisor introduced it to me, and how he used it to manage almost the entirety of his daily workflow. I’ve also gone fully down the rabbit hole and use Emacs for development, content writing (using excellent packages like AucTex), and managing my emails.…

  • EPIC: Real-time whole sky imaging on the LWA Telescope

    For the last three months I have been living in the United States in Phoenix, Arizona working on implementing a novel real-time imager for a radio telescope that is capable of imaging the radio sky in real-time, something which is nominally not feasible because of the high data rates involved. This is done through a…