M
M. A. Krishnakumar
Researcher at Tata Institute of Fundamental Research
Publications - 36
Citations - 496
M. A. Krishnakumar is an academic researcher from Tata Institute of Fundamental Research. The author has contributed to research in topics: Pulsar & Radio telescope. The author has an hindex of 9, co-authored 26 publications receiving 300 citations. Previous affiliations of M. A. Krishnakumar include Bielefeld University & National Centre for Radio Astrophysics.
Papers
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Journal ArticleDOI
Scatter Broadening Measurements of 124 Pulsars At 327 Mhz
TL;DR: In this article, the authors present the measurements of scatter broadening timescales for 124 pulsars at 327 MHz using the upgraded Ooty Radio Telescope, and they confirm that the ionized interstellar medium up to 3 kpc is consistent with the Kolmogorov spectrum, while it deviates significantly beyond this distance.
Journal ArticleDOI
Precision pulsar timing with the ORT and the GMRT and its applications in pulsar astrophysics
Bhal Chandra Joshi,Prakash Arumugasamy,Manjari Bagchi,Debades Bandyopadhyay,Avishek Basu,Neelam Dhanda Batra,Neelam Dhanda Batra,Suryarao Bethapudi,Arpita Choudhary,Kaushik De,Lankeswar Dey,Achamveedu Gopakumar,Yashwant Gupta,M. A. Krishnakumar,Yogesh Maan,P. K. Manoharan,A. Naidu,Rana Nandi,Dhruv Pathak,Mayuresh Surnis,Abhimanyu Susobhanan +20 more
TL;DR: A brief review of pulsar timing arrays is provided in this article, where a program to monitor frequently glitching pulsars with Indian radio telescopes using high cadence observations is presented, with illustrations of glitches detected in this program, including the largest ever glitch in PSR B0531+21.
Journal ArticleDOI
Scatter broadening measurements of 124 pulsars at 327 MHz
TL;DR: In this article, the authors present the measurements of scatter broadening time-scales for 124 pulsars at 327 MHz, using the upgraded Ooty Radio Telescope (ORT).
Journal ArticleDOI
The second data release from the European Pulsar Timing Array. III. Search for gravitational wave signals
John Antoniadis,P Arumugam,Swetha M. Arumugam,Stanislav Babak,Manjari Bagchi,A. B. Nielsen,C. G. Bassa,Adarsh Bathula,Anne Berthereau,Matteo Bonetti,Elisa Bortolas,Paul R. Brook,M. Burgay,R. N. Caballero,Aurelie Chalumeau,D. J. Champion,Savvas Chanlaridis,Si Chen,Ismaël Cognard,Subhajit Dandapat,Dipten Deb,S. Desai,Gregory Desvignes,C. Dwivedi,Mikel Falxa,Robert D. Ferdman,Alessia Franchini,Jonathan R. Gair,B. Goncharov,Achamveedu Gopakumar,E. Graikou,J.-M. Grießmeier,L. Guillemot,Y J Guo,Yashwant Gupta,Shinnosuke Hisano,H Hu,Federica Iraci,David Izquierdo-Villalba,J. S. Jang,Jennifer Jawor,Gemma H. Janssen,Axel Jessner,Bhal Chandra Joshi,Fazal Kareem,Ramesh Karuppusamy,Evan Keane,Michael Keith,Divya Kharbanda,T. Kikunaga,Neel Kolhe,Manuel Kramer,M. A. Krishnakumar,Kristen Lackeos,K J Lee,K. Liu,Yi Liu,Andrew Lyne,J. W. McKee,Yogesh Maan,Robert Main,Mitchell B. Mickaliger,I. C. Nitu,K. Nobleson,Avinash Kumar Paladi,Aditya Parthasarathy,Benetge Perera,Delphine Perrodin,Antoine Petiteau,N.K. Porayko,A. Possenti,Thiagaraj Prabu,Prerna Rana,A. Samajdar,S. Sanidas,Alberto Sesana,G. Shaifullah,Jaikhomba Singha,Lorenzo Speri,Renée Spiewak,A. K. Srivastava,Ben Stappers,Mayuresh Surnis,Sai Chaitanya Susarla,Abhimanyu Susobhanan,K. Takahashi,Pratik Tarafdar,Gilles Theureau,Caterina Tiburzi,E. V. D. Wateren,Alberto Vecchio,V. Venkatraman Krishnan,Joris P. W. Verbiest,J Wang,Lu Wang,Z Wu +95 more
TL;DR: In this article , the results of the search for an isotropic stochastic gravitational wave background (GWB) at nanohertz frequencies using the second data release of the European Pulsar Timing Array (EPTA) for 25 millisecond pulsars and a combination with the first data release (InPTA) was presented.
Journal ArticleDOI
PONDER - A Real time software backend for pulsar and IPS observations at the Ooty Radio Telescope
TL;DR: The Pulsar Ooty Radio Telescope New Digital Efficient Receiver (PONDER) as mentioned in this paper is a real-time versatile backend for pulsar observations, obtained by coherent dedispersion over a bandpass of 16 MHz.