Significant new opportunities for astrophysics and cosmology have been identified at low
radio frequencies. The Murchison Widefield Array is the first telescope in the southern …

Superconducting cosmic strings can give transient electromagnetic signatures that we argue
are most evident at radio frequencies. We investigate the three different kinds of radio bursts …

We show that radio bursts from cusps on superconducting strings are linearly polarized, thus
providing a signature that can be used to distinguish them from astrophysical sources. We …

In this paper we calculate the radio burst signals from three kinds of structures of
superconducting cosmic strings. By taking into account the observational factors including …

Many large combinatorial optimization problems tackled with evolutionary algorithms often
require very high computational times, usually due to the fitness evaluation. This fact forces …

The radio skies remain mostly unobserved when it comes to transient phenomena. The
direct detection of gravitational waves (GWs) will mark a major milestone of modern …

Fascinating stories that describe the unlikely path from quirky idea to useful and essential
knowledge. Why in the world are we paying for all this “basic” research? The answer to this …

Astrophysical phenomena such as self-annihilation of primordial black holes (PBHs),
gamma ray bursts (GRBs), and supernovae are expected to produce single dispersed …

This dissertation presents new concepts in front end design for receivers with large,
multiband tuning ranges. Such receivers are required to support large bandwidths (up to …

Cutting edge astrophysical studies require more and more observing time at low-frequency
radio telescopes, which is limited and quite expensive. Modern digital signal processing …