Revisiting wideband pulsar timing measurements
subject: methods: data analysis; pulsars: general
description: 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. The Author(s) 2026. Published by Oxford University Press on behalf of Royal Astronomical Society.
creator: Susobhanan, Abhimanyu; Paladi, Avinash Kumar; Desmecht, Ra; Amarnath; Bagchi, Manjari; Chakraborty, Manoneeta; Chowdhury, Shaswata; Das, Suruj Jyoti; Deb, Debabrata; Desai, Shantanu; Dwivedi, Churchil; Grover, Himanshu; Jose, Jibin; Joshi, Bhal Chandra; Kala, Shubham; Kareem, Fazal; Meena, Kuldeep; Mondal, Sushovan; Nobleson, K.; Pandian, B Arul; Rai, Kaustubh; Shukla, Adya; Singh, Manpreet; Srivastava, Aman; Surnis, Mayuresh; Tahbildar, Hemanga; Takahashi, Keitaro; Tarafdar, Pratik; Vara, Kunjal; Vyasraj, Vaishnavi; Zuraiq, Zenia
source: Monthly Notices of the Royal Astronomical Society;Volume;547;Issue;4;
publisher: Oxford University Press
date: 01-01-2026
rights: All Open Access; Gold Open Access; Green Open Access
relation: ISSN: 358711; CODEN: MNRAA
format: online
language: English
type: Article
coverage: Susobhanan A., MaxPlanckInstitut f Gravitationsphysik (AlbertEinsteinInstitut), Liebniz Universit Hannover, Callinstra 38, Hannover, D-30167, Germany, School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Kerala, Thiruvananthapuram, 695551, India; Paladi A.K., MaxPlanckInstitut f Gravitationsphysik (AlbertEinsteinInstitut), Liebniz Universit Hannover, Callinstra 38, Hannover, D-30167, Germany, Department of Physics, Indian Institute of Science, C. V. Raman Avenue, Karnataka, Bengaluru, 560012, India; Desmecht R., MaxPlanckInstitut f Gravitationsphysik (AlbertEinsteinInstitut), Liebniz Universit Hannover, Callinstra 38, Hannover, D-30167, Germany, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, B-1050, Belgium; Amarnath, Raman Research Institute, Karnataka, Bengaluru, 560080, India; Bagchi M., The Institute of Mathematical Sciences, C. I. T. Campus, Taramani, Tamil Nadu, Chennai, 600113, India, Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Maharashtra, Mumbai, 400094, India; Chakraborty M., Department of Astronomy, Astrophysics, and Space Engineering, Indian Institute of Technology Indore, Madhya Pradesh, Indore, 453552, India; Chowdhury S., The Institute of Mathematical Sciences, C. I. T. Campus, Taramani, Tamil Nadu, Chennai, 600113, India; Das S.J., Particle Theory and Cosmology Group, Center for Theoretical Physics of the Universe, Institute for Basic Science, Daejeon, 34126, South Korea; Deb D., Centre for Space Research, NorthWest University, Private Bag X6001, Potchefstroom, 2520, South Africa; Desai S., Department of Physics, Indian Institute of Technology Hyderabad, Kandi, Telangana, 502284, India; Dwivedi C., Astronomy and Astrophysics Division, Physical Research Laboratory, Thaltej Campus, Gujarat, Ahmedabad, 380059, India; Grover H., Department of Physics, Indian Institute of Technology Roorkee, Uttarakhand, Roorkee, 247667, India; Jose J., Department of Astronomy, Astrop…