Timing Pulsars with CHIME and the NANOGrav 15yr Dataset

Autor/innen

DOI:

https://doi.org/10.17307/wsc.v1i1.364

Schlagworte:

Pulsars, Neutron Stars

Abstract

The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) conducts long-term timing campaigns on large numbers of millisecond pulsars (MSPs). Wideband (WB) timing of the NANOGrav datasets was first done in the 12.5yr dataset, and proved to be extremely helpful for measuring the time-varying dispersion measure, which can significantly limit timing precision. However, we are limited by the fact that NANOGrav only observes most pulsars once per month. In contrast, the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Telescope currently observes most NANOGrav MSPs at nearly daily cadence at 600 MHz with a 400 MHz bandwidth. Using WB timing techniques, we combined one year of data taken at CHIME with data over the same time period from the NANOGrav 15yr Dataset for three MSPs.

Literaturhinweise

Zaven Arzoumanian et al. The NANOGrav 12.5 yr Data Set: Search for an Isotropic Stochastic Gravitational-

wave Background. The Astrophysical Journal Letters, 905(2):L34, December 2020.

Duncan R. Lorimer. Binary and Millisecond Pulsars. Living Reviews in Relativity, 11(1):8, November 2008.

G. F. Burgio, H. J. Schulze, I. Vida ̃na, and J. B. Wei. Neutron stars and the nuclear equation of state. Progress in

Particle and Nuclear Physics, 120:103879, September 2021.

D. R. Lorimer and M. Kramer. Handbook of Pulsar Astronomy. Cambridge University Press, 2012.

Timothy T. Pennucci. Frequency-dependent Template Profiles for High-precision Pulsar Timing. The Astrophys-

ical Journal Supplement, 871(1):34, January 2019.

The CHIME Collaboration et al. An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experi-

ment. arXiv e-prints, page arXiv:2201.07869, January 2022.

Deborah C. Good. Timing pulsars and detecting radio transients with CHIME. PhD thesis, University of British

Columbia, 2021.

NANOGrav Collaboration et al. The NANOGrav Nine-year Data Set: Observations, Arrival Time Measurements,

and Analysis of 37 Millisecond Pulsars. The Astrophysical Journal, 813(1):65, November 2015.

Md F. Alam et al. The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars. The Astro-

physical Journal Supplement, 252(1):5, January 2021.

Willem van Straten, Paul Demorest, and Stefan Osłowski. Pulsar data analysis with psrchive, 2012.

L. Nicastro, A. G. Lyne, D. R. Lorimer, P. A. Harrison, M. Bailes, and B. D. Skidmore. PSR:J1012+5307 -

a 5.26-MILLISECOND Pulsar in a 14.5-HOUR Binary System. Monthly Notices of the Royal Astronomical

Society, 273:L68, April 1995.

D. Mata S ́anchez, A. G. Istrate, M. H. van Kerkwijk, R. P. Breton, and D. L. Kaplan. PSR J1012+5307: a mil-

lisecond pulsar with an extremely low-mass white dwarf companion. Monthly Notices of the Royal Astronomical

Society, 494(3):4031–4042, May 2020.

Ch. Lange, F. Camilo, N. Wex, M. Kramer, D. C. Backer, A. G. Lyne, and O. Doroshenko. Precision timing mea-

surements of PSR J1012+5307. Monthly Notices of the Royal Astronomical Society, 326(1):274–282, September

I. Cognard et al. Discovery of Two Millisecond Pulsars in Fermi Sources with the Nanc ̧ay Radio Telescope. The

Astrophysical Journal, 732(1):47, May 2011.

T. Damour and N. Deruelle. General relativistic celestial mechanics of binary systems. I. The post-Newtonian

motion. Ann. Inst. Henri Poincar ́e Phys. Th ́eor, 43(1):107–132, January 1985.

T. Damour and N. Deruelle. General relativistic celestial mechanics of binary systems. II. The post-Newtonian

timing formula. Ann. Inst. Henri Poincar ́e Phys. Th ́eor, 44(3):263–292, January 1986.

K. Stovall et al. The Green Bank Northern Celestial Cap Pulsar Survey. I. Survey Description, Data Analysis,

and Initial Results. The Astrophysical Journal, 791(1):67, August 2014.

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Veröffentlicht

2023-10-12

Zitationsvorschlag

Agazie, G. Y. (2023). Timing Pulsars with CHIME and the NANOGrav 15yr Dataset. Proceedings of the Wisconsin Space Conference, 1(1). https://doi.org/10.17307/wsc.v1i1.364

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Rubrik

Astronomy and Cosmology