9 papers
-parabolicity of Riemannian manifolds
Alexander Grigor'yan, Leandro F. Pessoa, Alberto G. Setti
We describe the -parabolicity of a Riemannian manifold in terms of a unified theory of nonlinear -capacities, for the whole range . For example, the \…
LeoNet: A Machine Learning Method for Binary Pulsar Classification
Zhaocheng Gong, Jack White, Zeyu Yang +3
Binary pulsars provide valuable laboratories for testing theories of gravity, but orbital Doppler shifts complicate their detection. Fourier-domain acceleration and jerk searches a…
Discovering Millisecond Pulsars in Globular Clusters with the GMRT (GCGPS)
Jyotirmoy Das, Jayanta Roy, Paulo C. C. Freire +6
The Globular Clusters GMRT Pulsar Search (GCGPS) project, launched in mid-May 2023, has emerged as one of the most successful pulsar surveys conducted with the upgraded Giant Metre…
Globular Clusters GMRT Pulsar Search (GCGPS) I: Survey description, discovery and timing of the first pulsar in NGC 6093 (M80)
Jyotirmoy Das, Jayanta Roy, Paulo C. C. Freire +6
This paper describes the new Globular Clusters GMRT Pulsar Search (GCGPS) survey. This survey aims to find MSPs in the globular clusters (GCs) of the Milky Way using uGMRT. The obs…
Distribution of the Högbom CLEAN Algorithm Using Tiled Images with Feedback
Daniel Wright, Karel Adámek, Wesley Armour
Data sizes for next generation radio telescopes, such as the Square Kilometre Array (SKA), are far above that of their predecessors. The CLEAN algorithm was originally developed by…
Lowering In-Memory Footprint of Antenna Beams via Polynomial Approximation
Ali Taqi, Karel Adámek, Quentin Gueuning +3
With the emergence of new radio telescopes promising larger fields of view at lower observation frequencies (e.g., SKA), addressing direction-dependent effects (DDE) (e.g., directi…
Pulscan: Binary pulsar detection using unmatched filters on NVIDIA GPUs
Jack White, Karel Adámek, Jayanta Roy +2
The Fourier Domain Acceleration Search (FDAS) and Fourier Domain Jerk Search (FDJS) are proven matched filtering techniques for detecting binary pulsar signatures in time-domain ra…
CLEAN algorithm implementation comparisons between popular software packages
Daniel Wright, Karel Adámek, Wesley Armour
The CLEAN algorithm, first published by Högbom and its later variants such as Multiscale CLEAN (msCLEAN) by Cornwell, has been the most popular tool for deconvolution in radio astr…
Toward using GANs in astrophysical Monte-Carlo simulations
Ahab Isaac, Wesley Armour, Karel Adámek
Accurate modelling of spectra produced by X-ray sources requires the use of Monte-Carlo simulations. These simulations need to evaluate physical processes, such as those occurring…