PSR J0437-4715: The Argentine Institute of Radioastronomy 2019-2020 Observational Campaign

Abstract

The Argentine Institute of Radio astronomy (IAR) is equipped with two single-dish 30-m radio antennas capable of performing daily observations of pulsars and radio transients in the southern hemisphere at 1.4 GHz. We aim to contribute to pulsar timing studies related to short time-scale interstellar scintillation and searches for sources of continuous gravitational waves. We performed high-cadence (almost daily) and long-duration observations of the bright millisecond pulsar J0437$-$4715 for over a year, gathering more than 700 hours of good-quality data with timing precision better than 1~$\mu$s. We characterize the white and red timing noise in IAR's observations of J0437$-$4715. We quantify the effects of scintillation in this data set and perform single pulsar searches of continuous gravitational waves, setting constraints in the nHz--$\mu$Hz frequency range. We demonstrate IAR's potential for performing pulsar monitoring in the 1.4 GHz radio band for long periods of time with a daily cadence. In particular, we conclude that the ongoing observational campaign of the millisecond pulsar J0437$-$4715 can contribute to increase the sensitivity of the existing pulsar timing arrays.

16 pages, 13 figures, 5 tables. version to appear in The Astrophysical Journal

References in corpus (13)

• TEMPO2, a new pulsar timing package. I: Overview
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects
• The International Pulsar Timing Array: Second data release
• Limitations in timing precision due to single-pulse shape variability in millisecond pulsars
• The NANOGrav 12.5-year Data Set: Wideband Timing of 47 Millisecond Pulsars
• Colloquium: Comparison of Astrophysical and Terrestrial Frequency Standards
• The NANOGrav 11-Year Data Set: Evolution of Gravitational Wave Background Statistics
• Timing, polarimetry and physics of the bright, nearby millisecond pulsar PSR J0437-4715 - a single-pulse perspective
• Upgraded antennas for pulsar observations in the Argentine Institute of Radio astronomy
• Interstellar Scintillation of PSR J0437-4715
• Noise in pulsar timing arrays

Cited by in corpus (6)

• Fourier domain excision of periodic radio frequency interference
• pinta: The uGMRT Data Processing Pipeline for the Indian Pulsar Timing Array
• Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves
• Search for continuous gravitational waves from PSR J0437$-$4715 with a hidden Markov model in O3 LIGO data
• Vela Pulsar: Single Pulses Analysis with Machine Learning Techniques
• Precision Timing of PSR J0437-4715 with the IAR Observatory and Implications for Low-Frequency Gravitational Wave Source Sensitivity