RK
R. Karuppusamy
astro-ph.HEastro-ph.IMastro-ph.GAastro-ph.SRgr-qcastro-ph.COhep-phastro-phastro-ph.EPCompact astrophysical objects
On Valency
published · living versionsW_zzpfj2f3·v1 · currentpublished
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
with J. Antoniadis, Z. Arzoumanian, S. Babak, M. Bailes +121
1 version
W_ykc5jvcb·v1published
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Preprints & journals
137 papers in the corpus · 2008–2026Discovery of 27 new Rotating Radio Transients by MeerTRAP2608.11968v1 · S. Singh, J. Tian, B. W. Stappers et al.2026 · 0 citationsarXiv
On the polarization position angle jumps in FRB 20240114A2604.28012v1 · Ninisha Manaswini, Dant'e M. Hewitt, Laura G. Spitler et al.2026 · 1 citationarXiv
Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign2604.10287v1 · Ezequiel Albentosa-Ruiz, Jasmin E. Washington, Nicola Marchili et al.2026 · 1 citationAstronomy & Astrophysics 708 (2026) A179
The Northern High Time Resolution Universe pulsar survey: III. Single-pulse search continuation, follow-up observations, and initial results2604.09080v1 · L.J.M. Houben, H. Falcke, L.G. Spitler et al.2026 · 0 citationsA&A 708, A119 (2026)
Pulsar Discoveries from the TRAPUM UHF Survey of Fermi-LAT Sources2602.20811v2 · Tinn Thongmeearkom, Colin J. Clark, Rene P. Breton et al.2026 · 1 citationarXiv
Locating the missing large-scale emission in the jet of M87* with short EHT baselines2601.13356v1 · Boris Georgiev, Paul Tiede, Sebastiano D. von Fellenberg et al.2026 · 1 citationA&A 709, A26 (2026)
Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations2512.08970v1 · Saurabh, Hendrik Muller, Sebastiano D. von Fellenberg et al.2025 · 4 citationsarXiv
The Northern High Time Resolution Universe pulsar survey: II. Single-pulse search set-up and simulations2511.17797v2 · L.J.M. Houben, H. Falcke, L.G. Spitler et al.2025 · 2 citationsarXiv
Discovery of 30 Galactic radio transient pulsars with MeerTRAP2510.17723v1 · J. Tian, S. Singh, B. W. Stappers et al.2025 · 1 citationarXiv
Revisiting FRB 20121102A: milliarcsecond localisation and a decreasing dispersion measure2510.11352v1 · M.P. Snelders, J.W.T. Hessels, J. Huang et al.2025 · 0 citationsarXiv
Multiwavelength observations of a new black-widow millisecond pulsar PSR J1544-25552509.09605v1 · Sergio Belmonte Diaz, Tinn Thongmeearkom, Adipol Phosrisom et al.2025 · 1 citationarXiv
A milliarcsecond localization associates FRB 20190417A with a compact persistent radio source and an extreme magneto-ionic environment2509.05174v2 · Alexandra M. Moroianu, Shivani Bhandari, Maria R. Drout et al.2025 · 14 citationsarXiv
A survey for radio pulsars and transients in the 10 pc region around Sgr A*2507.08534v1 · G. Desvignes, R. P. Eatough, Y. Men et al.2025 · 0 citationsarXiv
Origin of the ring ellipticity in the black hole images of M87*2505.10333v1 · Rohan Dahale, Ilje Cho, Kotaro Moriyama et al.2025 · 4 citationsA&A 699, A279 (2025)
The putative center in NGC 10522501.08685v1 · Anne-Kathrin Baczko, Matthias Kadler, Eduardo Ros et al.2025 · 10 citationsA&A, 692, A205 (2024)
A multi-frequency study of sub-parsec jets with the Event Horizon Telescope2501.05518v1 · Jan Roder, Maciek Wielgus, Andrei P. Lobanov et al.2025 · 13 citationsA&A 695, A233 (2025)
Searches for signatures of ultra-light axion dark matter in polarimetry data of the European Pulsar Timing Array2412.02232v1 · N. K. Porayko, P. Usynina, J. Terol-Calvo et al.2024 · 5 citationsarXiv
Radio and gamma-ray timing of TRAPUM L-band Fermi pulsar survey discoveries2411.14895v1 · M. Burgay, L. Nieder, C. J. Clark et al.2024 · 5 citationsA&A, 691, A315 (2024)
First Very Long Baseline Interferometry Detections at 870{\mu}m2410.07453v1 · Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada et al.2024 · 33 citationsThe Astronomical Journal, Volume 168, Issue 3, id.130, 19 pp. 2024
Periodicity search in the timing of the 25 millisecond pulsars from the second data release of the European Pulsar Timing Array2408.09795v1 · Iuliana Nitu, Michael Keith, David Champion et al.2024 · 3 citationsarXiv
Modeling non stationary noise in pulsar timing array data analysis2405.03295v1 · Mikel Falxa, J. Antoniadis, D. J. Champion et al.2024 · 9 citationsarXiv
Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode2404.17623v3 · J. C. Algaba, M. Balokovic, S. Chandra et al.2024 · 35 citationsA&A 692, A140 (2024)
Ordered magnetic fields around the 3C 84 central black hole2402.00927v1 · G. F. Paraschos, J.-Y. Kim, M. Wielgus et al.2024 · 27 citationsIssue: A&A Volume 682, February 2024; Article number: L3; Number of pages: 15
Radio Pulse Profile Evolution of Magnetar Swift J1818.0-16072401.12909v1 · Rebecca Fisher, Elliot Butterworth, Kaustubh Rajwade et al.2024 · 8 citationsarXiv
A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data2401.07917v1 · Iuliana C. Nitu, Michael J. Keith, Caterina Tiburzi et al.2024 · 12 citationsarXiv
A freely precessing magnetar following an X-ray outburst.38798716 · Desvignes, Gregory, Weltevrede, Patrick, Gao, Yong et al.2024 · 26 citationsNature astronomy. 2024;8(5):617-627
Quasi-periodic sub-pulse structure as a unifying feature for radio-emitting neutron stars2311.13762v1 · Michael Kramer, Kuo Liu, Gregory Desvignes et al.2023 · 40 citationsarXiv
Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm.37955508 · Smarra, Clemente, Goncharov, Boris, Barausse, Enrico et al.2023 · 79 citationsPhysical review letters. 2023;131(17):171001
Comparing recent PTA results on the nanohertz stochastic gravitational wave background2309.00693v1 · G. Agazie, J. Antoniadis, A. Anumarlapudi et al.2023 · 17 citationsarXiv
A search for pulsars around Sgr A* in the first Event Horizon Telescope dataset2308.15381v1 · Pablo Torne, Kuo Liu, Ralph P. Eatough et al.2023 · 15 citationsarXiv
Rotation measure variations in Galactic Centre pulsars2307.03230v1 · F. Abbate, A. Noutsos, G. Desvignes et al.2023 · 15 citationsarXiv
The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals2306.16214v1 · J. Antoniadis, P. Arumugam, S. Arumugam et al.2023 · 1,047 citationsA&A 678, A50 (2023)on Valency
The second data release from the European Pulsar Timing Array I. The dataset and timing analysis2306.16224v1 · J. Antoniadis, S. Babak, A.-S. Bak Nielsen et al.2023 · 309 citationsarXiv
The second data release from the European Pulsar Timing Array II. Customised pulsar noise models for spatially correlated gravitational waves2306.16225v1 · J. Antoniadis, P. Arumugam, S. Arumugam et al.2023 · 100 citationsA&A 678, A49 (2023)
The second data release from the European Pulsar Timing Array V. Search for continuous gravitational wave signals2306.16226v3 · J. Antoniadis, P. Arumugam, S. Arumugam et al.2023 · 94 citationsA&A 690, A118 (2024)
The second data release from the European Pulsar Timing Array: IV. Implications for massive black holes, dark matter and the early Universe2306.16227v2 · J. Antoniadis, P. Arumugam, S. Arumugam et al.2023 · 67 citationsarXivon Valency
Variable Scintillation Arcs of Millisecond Pulsars observed with the Large European Array for Pulsars2306.13462v1 · R. A. Main, J. Antoniadis, S. Chen et al.2023 · 19 citationsarXiv
Practical approaches to analyzing PTA data: Cosmic strings with six pulsars2306.12234v3 · Hippolyte Quelquejay Leclere, Pierre Auclair, Stanislav Babak et al.2023 · 28 citationsPhys. Rev. D 108 (2023), 123527
BlackHoleCam -- Testing general relativity with pulsars orbiting Sagittarius A*2306.01496v1 · Ralph P. Eatough, Gregory Desvignes, Kuo Liu et al.2023 · 2 citationsarXiv
Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration2303.12004v2 · Cora Prather, Jason Dexter, Monika Moscibrodzka et al.2023 · 24 citationsApJ, 950, 35, 2023
The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources2212.08528v1 · C. J. Clark, R. P. Breton, E. D. Barr et al.2022 · 40 citationsMNRAS, 519, 5590-5606 (2023)
Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars2206.10045v1 · K. Liu, J. Antoniadis, C. G. Bassa et al.2022 · 11 citationsarXiv
A burst storm from the repeating FRB 20200120E in an M81 globular cluster2206.03759v2 · K. Nimmo, J. W. T. Hessels, M. P. Snelders et al.2022 · 56 citationsarXiv
Long-term scintillation studies of EPTA pulsars. I. Observations and basic results2203.16950v2 · Yulan Liu, Joris P. W. Verbiest, Robert A. Main et al.2022 · 23 citationsA&A 664, A116 (2022)
Long term radio and X-ray evolution of the magnetar Swift J1818.0-16072202.07548v1 · K. M. Rajwade, B. W. Stappers, A. G. Lyne et al.2022 · 20 citationsarXiv
A repeating fast radio burst source in a globular cluster.35197615 · Kirsten, F, Marcote, B, Nimmo, K et al.2022 · 293 citationsNature. 2022;602(7898):585-589
Two New Black Widow Millisecond Pulsars In M282201.11238v3 · Andrew Douglas, Prajwal Padmanabh, Scott Ransom et al.2022 · 18 citationsarXiv
Submillimeter pulsations from the magnetar XTE J1810-1972201.07820v1 · Pablo Torne, Graham Bell, Dan Bintley et al.2022 · 14 citationsarXiv
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background2201.03980v1 · J. Antoniadis, Z. Arzoumanian, S. Babak et al.2022 · 323 citationsarXivon Valency
Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars2201.04245v1 · G. Mall, R. A. Main, J. Antoniadis et al.2022 · 41 citationsarXiv
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