NT
Nithyanandan Thyagarajan
astro-ph.IMastro-ph.COastro-ph.GAphysics.opticsastro-ph.HEphysics.acc-phgr-qcastro-ph.EPastro-ph.SRphysics.class-ph
On Valency
published · living versionsW_ce9sta9n·v1 · currentpublished
Evaluating the prevalence of spurious correlations in pulsar timing array datasets
with Andrew Zic, George Hobbs, R. M. Shannon, Daniel Reardon +11
1 version
W_buxt8wmf·v1published
W_7k78wr95·v1published
Preprints & journals
109 papers in the corpus · 2013–2026A fast, wide-field, and real-time imaging prototype for large aperture arrays2609.03027v1 · Nithyanandan Thyagarajan, Jishnu Thekkeppattu, David Humphrey2026 · 0 citationsProc. SPIE 14153, Radio Telescopes, Technologies, and Methods, 141530G (17 Aug 2026)
Towards independent event horizon imaging of the supermassive black holes in M87 and the Milky Way2608.19675v1 · Nithyanandan Thyagarajan, Samuel Lai, Ivy Wong et al.2026 · 0 citationsProc. SPIE 14153, Radio Telescopes, Technologies, and Methods, 141530O (17 Aug 2026)
New techniques for high-resolution imaging and high-precision wavefront sensing via masked-aperture interferometry2607.27347v1 · Nithyanandan Thyagarajan, Bojan Nikolic, Chris Carilli et al.2026 · 0 citationsarXiv
Capabilities and Limitations of Non-Redundant Aperture Interferometry for Beam Size Measurements2607.19976v1 · C. Carilli, U. Iriso, B. Nikolic et al.2026 · 0 citationsarXiv
Exploiting Non Redundant Aperture Interferometry as a Diagnostics Tool for Synchrotron Light Characterization2607.19991v1 · C. Carilli, U. Iriso, B. Nikolic et al.2026 · 0 citationsProc. of ibic2025, Liverpool, UK, 07-11 September 2025
Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at with the 21-cm forest power spectrum2607.15341v1 · Tom'as Soltinsk'y, Arnab Chakraborty, Girish Kulkarni (TIFR) et al.2026 · 0 citationsarXiv
Conditional Image Diffusion with Interferometric Closure Invariants: Independent EHT Imaging of Centaurus~A and 3C~2792602.21507v1 · Samuel Lai, Nithyanandan Thyagarajan, O. Ivy Wong et al.2026 · 0 citationsarXiv
Establishing a relationship between the cosmological 21 cm power spectrum and interferometric closure phases2602.04965v1 · Pascal M. Keller, Bojan Nikolic, Nithyanandan Thyagarajan2026 · 0 citationsA&A, 705, A221 (2026)
The FarView Low Frequency Radio Array on the Moon's Far Side: Science and Array Architecture2601.16170v2 · Jack O. Burns, Judd Bowman, Tzu-Ching Chang et al.2026 · 0 citationsarXiv
Exploring One-point Statistics in HERA Phase I Data: Effects of Foregrounds and Systematics on Measuring One-Point Statistics2511.02190v1 · Honggeun Kim, Jacqueline N. Hewitt, Nicholas S. Kern et al.2025 · 3 citationsApJ, 993, 189 (2025)
Very-Long Baseline Interferometry Imaging with Closure Invariants using Conditional Image Diffusion2510.12093v1 · Samuel Lai, Nithyanandan Thyagarajan, O. Ivy Wong et al.2025 · 0 citationsPubl. Astron. Soc. Aust. 42 (2025) e148
Two-dimensional light beam shape characterization using interferometric closure amplitudes.40981810 · Thyagarajan, Nithyanandan, Nikolic, Bojan, Carilli, Christopher L et al.2025 · 0 citationsJournal of the Optical Society of America. A, Optics, image science, and vision. 2025;42(9):1261-1267
Identifying Habitable Exoplanets with Radio Telescopes on the Lunar Farside2508.14126v1 · N. Mahesh, J. D. Bowman, J. O. Burns et al.2025 · 0 citationsarXiv
Detection of X-ray emission from a bright long-period radio transient.40437090 · Wang, Ziteng, Rea, Nanda, Bao, Tong et al.2025 · 30 citationsNature. 2025;642(8068):583-586
Estimating Soil Electrical Parameters in the Canadian High Arctic from Impedance Measurements of the MIST Antenna Above the Surface2504.14444v2 · I. Hendricksen, R. A. Monsalve, V. Bidula et al.2025 · 2 citationsGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026
Using the antenna impedance to estimate soil electrical parameters for the MIST global 21-cm experiment2503.19401v2 · Cinthia Altamirano, Ricardo Bustos, Raul A. Monsalve et al.2025 · 1 citationarXiv
A New Method for Wavefront Sensing using Optical Masking Interferometry2503.10820v2 · C.L. Carilli (NRAO), L. Torino (ALBA-CELLS), B. Nikolic et al.2025 · 1 citationProceedings Volume 13619, Unconventional Imaging, Sensing, and Adaptive Optics 2025; 136190V (2025)
Comparison of Fast, Hybrid Imaging Architectures for Multi-scale, Hierarchical Aperture Arrays2411.17804v1 · Nithyanandan Thyagarajan2024 · 1 citationPubl. Astron. Soc. Aust. 42 (2025) e001
Deep Learning VLBI Image Reconstruction with Closure Invariants2411.12233v1 · Samuel Lai, Nithyanandan Thyagarajan, O. Ivy Wong et al.2024 · 5 citationsarXiv
New interferometric aperture masking technique for full transverse beam characterization using synchrotron radiation2409.11135v1 · Ubaldo Iriso, Laura Torino, Chris Carilli et al.2024 · 1 citationProceedings IBIC 2024 Beijing, pages 178-181, JACoW Publishing, Geneva, Switzerland
The CRAFT Coherent (CRACO) upgrade I: System Description and Results of the 110-ms Radio Transient Pilot Survey2409.10316v2 · Z. Wang, K. W. Bannister, V. Gupta et al.2024 · 17 citationsPubl. Astron. Soc. Aust. 42 (2025) e005
21cm Epoch of Reionisation Power Spectrum with Closure Phase using the Murchison Widefield Array2409.02906v1 · Himanshu Tiwari, Nithyanandan Thyagarajan, Cathryn M. Trott et al.2024 · 2 citationsarXiv
Laboratory demonstration of image plane self-calibration in interferometry.39873576 · Carilli, Christopher L, Nikolic, Bojan, Torino, Laura et al.2025 · 0 citationsJournal of the Optical Society of America. A, Optics, image science, and vision. 2024;41(8):1513-1517
Deriving the size and shape of the ALBA electron beam with optical synchrotron radiation interferometry using aperture masks: technical choices2406.02114v1 · C.L. Carilli (NRAO), L. Torino (CELLS), U. Iriso (CELLS) et al.2024 · 0 citationsarXiv
Two-dimensional Synchrotron Beam Characterisation from a Single Interferogram2405.12090v3 · Bojan Nikolic, Christopher L. Carilli, Nithyanandan Thyagarajan et al.2024 · 1 citationPhys. Rev. Accel. Beams 27, (2024) 112802
A demonstration of the effect of fringe-rate filtering in the Hydrogen Epoch of Reionization Array delay power spectrum pipeline2402.08659v2 · Hugh Garsden, Philip Bull, Mike Wilensky et al.2024 · 8 citationsarXiv
Radio-loud fraction of z>6 quasars2402.08732v1 · Pascal M. Keller, Nithyanandan Thyagarajan, Ajay Kumar et al.2024 · 11 citationsMonthly Notices of the Royal Astronomical Society, stae418 (2024)
Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning2401.04304v1 · Lindsay M. Berkhout, Daniel C. Jacobs, Zuhra Abdurashidova et al.2024 · 34 citationsPASP 2024 136 045002
matvis: A matrix-based visibility simulator for fast forward modelling of many-element 21 cm arrays2312.09763v2 · Piyanat Kittiwisit, Steven G. Murray, Hugh Garsden et al.2023 · 12 citationsarXiv
Bayesian estimation of cross-coupling and reflection systematics in 21cm array visibility data2312.03697v2 · Geoff G. Murphy, Philip Bull, Mario G. Santos et al.2023 · 5 citationsarXiv
Direct Optimal Mapping Image Power Spectrum and its Window Functions2311.10711v2 · Zhilei Xu, Honggeun Kim, Jacqueline N. Hewitt et al.2023 · 4 citationsarXiv
Interferometric Image Reconstruction using Closure Invariants and Machine Learning2311.06349v3 · Nithyanandan Thyagarajan, Lucas Hoefs, O. Ivy Wong2023 · 4 citationsarXiv
Simulating the Detection of the Global 21 cm Signal with MIST for Different Models of the Soil and Beam Directivity2310.07741v3 · Raul A. Monsalve, Christian H. Bye, Jonathan L. Sievers et al.2023 · 17 citations2024, ApJ, 961, 56
Mapper of the IGM spin temperature: instrument overview2309.02996v2 · R. A. Monsalve, C. Altamirano, V. Bidula et al.2023 · 59 citationsMonthly Notices of the Royal Astronomical Society, Volume 530, Issue 4, June 2024, Pages 4125-4147
Comparing recent PTA results on the nanohertz stochastic gravitational wave background2309.00693v1 · G. Agazie, J. Antoniadis, A. Anumarlapudi et al.2023 · 17 citationsarXiv
The Parkes Pulsar Timing Array Third Data Release2306.16230v2 · Andrew Zic, Daniel J. Reardon, Agastya Kapur et al.2023 · 212 citationsPubl.Astron.Soc.Austral. 40 (2023) e049
Measuring the global 21-cm signal with the MWA-II: improved characterisation of lunar-reflected radio frequency interference2306.01013v2 · Himanshu Tiwari, Benjamin McKinley, Cathryn M. Trott et al.2023 · 4 citationsarXiv
Search for the Epoch of Reionisation with HERA: Upper Limits on the Closure Phase Delay Power Spectrum2302.07969v1 · Pascal M. Keller, Bojan Nikolic, Nithyanandan Thyagarajan et al.2023 · 8 citationsarXiv
Optimization and Commissioning of the EPIC Commensal Radio Transient Imager for the Long Wavelength Array2301.09662v1 · Hariharan Krishnan, Adam P. Beardsley, Judd D. Bowman et al.2023 · 8 citationsarXiv
Image-plane self-calibration in interferometry.36520736 · Carilli, Christopher L, Nikolic, Bojan, Thyagarajan, Nithyanandan2022 · 3 citationsJournal of the Optical Society of America. A, Optics, image science, and vision. 2022;39(12):2214-2223
Characterization Of Inpaint Residuals In Interferometric Measurements of the Epoch Of Reionization2210.14927v2 · Michael Pagano, Jing Liu, Adrian Liu et al.2022 · 11 citationsarXiv
Improved Constraints on the 21 cm EoR Power Spectrum and the X-Ray Heating of the IGM with HERA Phase I Observations2210.04912v2 · Zara Abdurashidova, Tyrone Adams, James E. Aguirre et al.2022 · 186 citations2023 ApJ 945 124
Impact of instrument and data characteristics in the interferometric reconstruction of the 21 cm power spectrum2210.03721v3 · Ad'elie Gorce, Samskruthi Ganjam, Adrian Liu et al.2022 · 15 citationsarXiv
Evaluating the prevalence of spurious correlations in pulsar timing array datasets2207.12237v1 · Andrew Zic, George Hobbs, R. M. Shannon et al.2022 · 35 citationsarXivon Valency
Direct Optimal Mapping for 21cm Cosmology: A Demonstration with the Hydrogen Epoch of Reionization Array2204.06021v2 · Zhilei Xu, Jacqueline N. Hewitt, Kai-Feng Chen et al.2022 · 11 citationsarXiv
Simulations of primary beam effects on the cosmic bispectrum phase observed with the Hydrogen Epoch of Reionization Array2112.12765v5 · N. Charles, G. Bernardi, H.L. Bester et al.2021 · 4 citationsarXiv
High-precision search for dark photon dark matter with the Parkes Pulsar Timing Array2112.07687v2 · Xiao Xue, Zi-Qing Xia, Xingjiang Zhu et al.2021 · 34 citationsPhys. Rev. Research 4, L012022 (2022)
Hybrid mapping of the Black Hole Shadow in M872111.11626v3 · Christopher L. Carilli, Nithyanandan Thyagarajan2021 · 18 citationsarXiv
Automated Detection of Antenna Malfunctions in Large-N Interferometers: A Case Study with the Hydrogen Epoch of Reionization Array2109.12733v3 · Dara Storer, Joshua S. Dillon, Daniel C. Jacobs et al.2021 · 5 citationsRadio Science, vol. 57, no. 1, 2022
Invariants in Co-polar Interferometry: an Abelian Gauge Theory2108.11399v3 · Nithyanandan Thyagarajan, Rajaram Nityananda, Joseph Samuel2021 · 15 citationsPhysical Review D, 105, 043019 (2022)
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