Revisiting wideband pulsar timing measurements

Monthly Notices of the Royal Astronomical Society 2026 Open access

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Authors: Abhimanyu Susobhanan, Avinash Kumar Paladi, Réka Desmecht, Amarnath, Manjari Bagchi, M. Chakraborty, Shaswata Chowdhury, Suruj Jyoti Das, Debabrata Deb, S. Desai, C. Dwivedi, Himanshu Grover
+19 more Jibin Jose, Bhal Chandra Joshi, Shubham Kala, Faten Mohammed Kareem, Kuldeep Meena, Sushovan Mondal, K. Nobleson, Arul Pandian B, K.N. Rai, Aprajita Shukla, M. Singh, Aman Srivastava, Mayuresh Surnis, Hemanga Tahbildar, Keitaro Takahashi, Pratik Tarafdar, Kunjal Vara, Vaishnavi Vyasraj, Zenia Zuraiq
DOI: 10.1093/mnras/stag444
Cited by: 1
References: 42

Abstract

ABSTRACT In the wideband paradigm of pulsar timing, the time of arrival of a pulsar pulse is measured simultaneously with the corresponding dispersion measure from a frequency-resolved integrated pulse profile. We present a new method for performing wideband measurements that rigorously accounts for measurement noise. We demonstrate this method using observations of PSR J2124−3358 made as part of the Indian Pulsar Timing Array experiment using the upgraded Giant Metre-wave Radio Telescope, and show that our method produces more realistic measurement uncertainty estimates compared to the existing wideband measurement method.

Fields of Study & Subjects

Pulsars and Gravitational Waves Research Radio Astronomy Observations and Technology Advanced Frequency and Time Standards

Publication details

Journal / source
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Volume
547
Issue
4
Publication date
7 March 2026
Language
EN