A5030725666- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Advanced Frequency and Time Standards
- Astrophysics and Cosmic Phenomena
Astronomy and Space
2022
Commonwealth Scientific and Industrial Research Organisation
2022
International Centre for Radio Astronomy Research
2019-2022
Curtin University
2019-2022
ARC Centre of Excellence for All-sky Astrophysics
2019
Abstract We describe system verification tests and early science results from the pulsar processor (PTUSE) developed for newly commissioned 64-dish SARAO MeerKAT radio telescope in South Africa. is a high-gain ( ${\sim}2.8\,\mbox{K Jy}^{-1}$ ) low-system temperature ${\sim}18\,\mbox{K at }20\,\mbox{cm}$ array that currently operates 580–1 670 MHz can produce tied-array beams suitable observations. This paper presents MeerTime Large Survey Project commissioning with PTUSE. Highlights include...
Abstract One of the major challenges for pulsar timing array (PTA) experiments is mitigation effects turbulent interstellar medium (ISM) from data. These can potentially lead to measurable delays and/or distortions in pulse profiles and scale strongly with inverse radio frequency. Low-frequency observations are therefore highly appealing characterizing them. However, order achieve necessary time resolution resolve profile features short-period millisecond pulsars, phase-coherent dedispersion...
Abstract Making precise measurements of pulsar dispersion measures (DMs) and applying suitable corrections for them is among the major challenges in high-precision timing programs such as arrays (PTAs). While advent wideband instrumentation can enable more DM thence improved precision, it also necessitates doing careful assessments frequency-dependent (chromatic) DMs that were theorized by Cordes et al (2016). Here we report detection an effect broadband observations millisecond PSR...