Publications of S. P. Rajaguru

A list of publications authored or co-authored by S. P. Rajaguru, derived from the SAO/NASA Astrophysics Data System (ADS). The number in brackets after each title indicates the number of citations that the paper has received.

Orcid ID: 0000-0003-0003-4561

List of publications ordered by citations
Number of papers: 67 (refereed: 41)
No. of citations: 989
First author papers: 25 (refereed: 12)

2026

  1. Hemispheric Magnetic Asymmetry and Cross-equatorial Circulation Cells within the Sun's Near-surface Shear Layer [0]
    Sen, Anisha, Rajaguru, S. P., Chen, Ruizhu, Zhao, Junwei & Kholikov, Shukur, ApJ, 997, 57

2025

  1. Wave analysis tools [12]
    Jafarzadeh, Shahin, Jess, David B., Stangalini, Marco, Grant, Samuel D. T., Higham, Jonathan E., Pessah, Martin E., Keys, Peter H., Belov, Sergey, Calchetti, Daniele, Duckenfield, Timothy J., Fedun, Viktor, Fleck, Bernhard, Gafeira, Ricardo, Jefferies, Stuart M., Khomenko, Elena, Morton, Richard J., Norton, Aimee A., Rajaguru, S. P., Schiavo, Luiz A. C. A., Sharma, Rahul, Silva, Suzana S. A., Solanki, Sami K., Steiner, Oskar, Verth, Gary, Vigeesh, Gangadharan & Yadav, Nitin, Nature Reviews Methods Primers, 5, 21
  2. Structure and Dynamics of the Sun's Interior Revealed by the Helioseismic and Magnetic Imager [7]
    Kosovichev, Alexander G., Basu, Sarbani, Bekki, Yuto, Buitrago-Casas, Juan Camilo, Chatzistergos, Theodosios, Chen, Ruizhu, Christensen-Dalsgaard, Jørgen, Donea, Alina, Fleck, Bernhard, Fournier, Damien, García, Rafael A., Getling, Alexander V., Gizon, Laurent, Gough, Douglas O., Hanasoge, Shravan, Hanson, Chris S., Hess Webber, Shea A., Hoeksema, J. Todd, Howe, Rachel, Jain, Kiran, Kasapis, Spiridon, Kashyap, Samarth G., Kitiashvili, Irina N., Komm, Rudolf, Korzennik, Sylvain G., Krivova, Natalie A., Kuhn, Jeffrey R., Liang, Zhi-Chao, Lindsey, Charles, Mahajan, Sushant S., Mandal, Krishnendu, Mani, Prasad, Martinez Oliveros, Juan Carlos, Mathur, Savita, Rabello Soares, M. Cristina, Rajaguru, S. Paul, Reiter, Johann, Rhodes, Edward J., Rozelot, Jean-Pierre, Scherrer, Philip H., Solanki, Sami K., Stefan, John T., Toomre, Juri, Tripathy, Sushanta C., Upton, Lisa A. & Zhao, Junwei, Solar Physics, 300, 70
  3. Formation of Jet-driven Forced Reconnection Region and Associated Plasma Blobs in a Prominence Segment [2]
    Mishra, Sudheer K., Srivastava, A. K., Rajaguru, S. P. & Jelínek, P., ApJ, 982, 147
  4. Solar Cycle Variations in Meridional Flows and Rotational Shear within the Sun's Near-surface Shear Layer [2]
    Sen, Anisha, Rajaguru, S. P., Iyer, Abhinav Govindan, Chen, Ruizhu, Zhao, Junwei & Kholikov, Shukur, ApJ, 984, L1

2024

  1. Investigation of Phase Shift and Travel Time of Acoustic Waves in the Lower Solar Atmosphere Using Multiheight Velocities [2]
    Kumar, Hirdesh, Kumar, Brajesh, Mathew, Shibu K., Bayanna, A. Raja & Rajaguru, S. P., ApJ, 972, 39

2023

  1. Origin of Quasi-periodic Pulsation at the Base of a Kink-unstable Jet [12]
    Mishra, Sudheer K., Sangal, Kartika, Kayshap, Pradeep, Jelínek, Petr, Srivastava, A. K. & Rajaguru, S. P., ApJ, 945, 113
  2. Dynamics of Photospheric Magnetic Flux Distribution and Variations in Solar RVs: A Study Using HARPS-N Solar and SDO Observations [5]
    Sen, Anisha & Rajaguru, S. P., ApJ, 956, 145

2022

  1. The Propagation of Coherent Waves Across Multiple Solar Magnetic Pores [15]
    Grant, S. D. T., Jess, D. B., Stangalini, M., Jafarzadeh, S., Fedun, V., Verth, G., Keys, P. H., Rajaguru, S. P., Uitenbroek, H., MacBride, C. D., Bate, W. & Gilchrist-Millar, C. A., ApJ, 938, 143
  2. Galactic Chemical Evolution of Exoplanet Hosting Stars: Are High-mass Planetary Systems Young? [19]
    Swastik, C., Banyal, Ravinder K., Narang, Mayank, Manoj, P., Sivarani, T., Rajaguru, S. P., Unni, Athira & Banerjee, Bihan, The Astronomical Journal, 164, 60
  3. Carbon Abundance of Stars in the LAMOST-Kepler Field [12]
    Unni, Athira, Narang, Mayank, Sivarani, Thirupathi, Manoj, P., Banyal, Ravinder K., Surya, Arun, Rajaguru, S. P. & Swastik, C., The Astronomical Journal, 164, 181
  4. Phase Shifts Measured in Evanescent Acoustic Waves above the Solar Photosphere and Their Possible Impacts on Local Helioseismology [10]
    Zhao, Junwei, Rajaguru, S. P. & Chen, Ruizhu, ApJ, 933, 109

2021

  1. Host Star Metallicity of Directly Imaged Wide-orbit Planets: Implications for Planet Formation [39]
    Swastik, C., Banyal, Ravinder K., Narang, Mayank, Manoj, P., Sivarani, T., Reddy, Bacham E. & Rajaguru, S. P., The Astronomical Journal, 161, 114

2020

  1. Time-Distance Helioseismology of Deep Meridional Circulation [10]
    Rajaguru, S. P. & Antia, H. M., Dynamics of the Sun and Stars; Honoring the Life and Work of Michael J. Thompson (Editors: Monteiro, Mário J. P. F. G., Garcia, Rafael A., Christensen-Dalsgaard, J\orgen & McIntosh, Scott W.), Astrophysics and Space Science Proceedings, 57, p. 107
  2. Signatures of Untwisting Magnetic Field in a Small Emerging Bipole in the Solar Photosphere [0]
    Sangeetha, C. R., Tripathi, Durgesh & Rajaguru, S. P., ApJ, 895, 67

2019

  1. Magnetic Fields and the Supply of Low-frequency Acoustic Wave Energy to the Solar Chromosphere [29]
    Rajaguru, S. P., Sangeetha, C. R. & Tripathi, Durgesh, ApJ, 871, 155

2018

  1. Twenty-one-year helioseismic measurement of solar meridional circulation from SOHO/MDI and SDO/HMI: Anomalous northern hemisphere during cycle 24 [0]
    Liang, Zhi-Chao, Gizon, Laurent, Birch, Aaron C., Duvall, Thomas L., Jr. & Rajaguru, S. P., Catalyzing Solar Connections, p. 59
  2. Solar meridional circulation from twenty-one years of SOHO/MDI and SDO/HMI observations. Helioseismic travel times and forward modeling in the ray approximation [32]
    Liang, Zhi-Chao, Gizon, Laurent, Birch, Aaron C., Duvall, Thomas L. & Rajaguru, S. P., A&A, 619, A99
  3. Helioseismic Inversion to Infer the Depth Profile of Solar Meridional Flow Using Spherical Born Kernels [28]
    Mandal, K., Hanasoge, S. M., Rajaguru, S. P. & Antia, H. M., ApJ, 863, 39
  4. Simulation of the small-scale magnetism in main-sequence stellar atmospheres [28]
    Salhab, R. G., Steiner, O., Berdyugina, S. V., Freytag, B., Rajaguru, S. P. & Steffen, M., A&A, 614, A78
  5. A study of acoustic halos in active region NOAA 11330 using multi-height SDO observations [4]
    Tripathy, S. C., Jain, K., Kholikov, S., Hill, F., Rajaguru, S. P. & Cally, P. S., Advances in Space Research, 61, 691

2017

  1. Signatures of the impact of flare-ejected plasma on the photosphere of a sunspot light bridge [12]
    Felipe, T., Collados, M., Khomenko, E., Rajaguru, S. P., Franz, M., Kuckein, C. & Asensio Ramos, A., A&A, 608, A97

2016

  1. p-Mode Interaction with Sunspots [14]
    Cally, P. S., Moradi, H. & Rajaguru, S. P., Geophysical Monograph Series, 216, 489
  2. 3D Simulations of Realistic Power Halos in Magnetohydrostatic Sunspot Atmospheres: Linking Theory and Observation [28]
    Rijs, Carlos, Rajaguru, S. P., Przybylski, Damien, Moradi, Hamed, Cally, Paul S. & Shelyag, Sergiy, ApJ, 817, 45
  3. Relationships between Fluid Vorticity, Kinetic Helicity, and Magnetic Field on Small-scales (Quiet-Network) on the Sun [4]
    Sangeetha, C. R. & Rajaguru, S. P., ApJ, 824, 120

2015

  1. Modeling approaches in helioseismology [0]
    Rajaguru, S. P., Extraterrestrial Seismology (Editors: Tong, V. & Garci, R.), p.123
  2. Meridional Circulation in the Solar Convection Zone: Time-Distance Helioseismic Inferences from Four Years of HMI/SDO Observations [111]
    Rajaguru, S. P. & Antia, H. M., ApJ, 813, 114

2014

  1. Properties of small-scale magnetism of stellar atmospheres [14]
    Steiner, Oskar, Salhab, René, Freytag, Bernd, Rajaguru, Paul, Schaffenberger, Werner & Steffen, Matthias, Publications of the Astronomical Society of Japan, 66, S5

2013

  1. Properties of High-Frequency Wave Power Halos Around Active Regions: An Analysis of Multi-height Data from HMI and AIA Onboard SDO [35]
    Rajaguru, S. P., Couvidat, S., Sun, Xudong, Hayashi, K. & Schunker, H., Solar Physics, 287, 107
  2. Reflection and Refraction of (Magneto-)Acoustic Waves at the Magnetic Canopy: Further Evidences from Multi-Height Seismic Data [2]
    Rajaguru, S. P., Sun, X., Hayashi, K. & Couvidat, S., Fifty Years of Seismology of the Sun and Stars (Editors: Jain, K., Tripathy, S. C., Hill, F., Leibacher, J. W. & Pevtsov, A. A.), Astronomical Society of the Pacific Conference Series, 478, p. 345
  3. First steps with CO5BOLD using HLLMHD and PP reconstruction . [8]
    Steiner, O., Rajaguru, S. P., Vigeesh, G., Steffen, M., Schaffenberger, W. & Freytag, B., Memorie della Societa Astronomica Italiana Supplementi, 24, 100

2012

  1. Line-of-Sight Observables Algorithms for the Helioseismic and Magnetic Imager (HMI) Instrument Tested with Interferometric Bidimensional Spectrometer (IBIS) Observations [60]
    Couvidat, Sébastien, Rajaguru, S. P., Wachter, Richard, Sankarasubramanian, K., Schou, Jesper & Scherrer, Philip H., Solar Physics, 278, 217
  2. Sunspot seismology: accounting for magnetohydrodynamic wave processes using imaging spectropolarimetry [1]
    Rajaguru, S. P., arXiv:1206.5671

2011

  1. Solar physics in India: developments from the nineteenth century to the present era [0]
    Hasan, S. S., Choudhuri, Arnab Rai & Rajaguru, S. P., Astronomical Society of India Conference Series, Astronomical Society of India Conference Series, 2, p. 367
  2. Studies of waves in sunspots using spectropolarimetric observations [0]
    MacDonald, Gordon A. & Rajaguru, S. P., Physics of Sun and Star Spots (Editors: Prasad Choudhary, Debi & Strassmeier, Klaus G.), IAU Symposium, 273, p. 361
  3. Effects of observation heights and atmospheric wave evolution in sunspot seismology: a study using HMI and AIA (1600 A and 1700 A) data [0]
    Rajaguru, S. P. & Couvidaa, S., SDO-3: Solar Dynamics and Magnetism from the Interior to the Atmosphere (Editors: Pesnell, W. Dean & Thompson, Barbara), p. 66
  4. A study of acoustic power maps over sunspot regions using HMI and AIA (1600 A and 1700 A) data [0]
    Rajaguru, S. P. & Couvidat, S., SDO-3: Solar Dynamics and Magnetism from the Interior to the Atmosphere (Editors: Pesnell, W. Dean & Thompson, Barbara), p. 65
  5. Magnetohydrostatic equilibrium in starspots: dependences on color (Teff) and surface gravity (g) [0]
    Rajaguru, S. P. & Hasan, S. S., Physics of Sun and Star Spots (Editors: Prasad Choudhary, Debi & Strassmeier, Klaus G.), IAU Symposium, 273, p. 276
  6. Sunspot seismology: accounting for magnetohydrodynamic wave processes using imaging spectropolarimetry [0]
    Rajaguru, S. P., Astronomical Society of India Conference Series, Astronomical Society of India Conference Series, 2, p. 181

2010

  1. Solar Physics at the Kodaikanal Observatory: A Historical Perspective [15]
    Hasan, S. S., Mallik, D. C. V., Bagare, S. P. & Rajaguru, S. P., Magnetic Coupling between the Interior and Atmosphere of the Sun (Editors: Hasan, S. S. & Rutten, R. J.), Astrophysics and Space Science Proceedings, 19, p. 12
  2. Modeling the Subsurface Structure of Sunspots [101]
    Moradi, H., Baldner, C., Birch, A. C., Braun, D. C., Cameron, R. H., Duvall, T. L., Gizon, L., Haber, D., Hanasoge, S. M., Hindman, B. W., Jackiewicz, J., Khomenko, E., Komm, R., Rajaguru, P., Rempel, M., Roth, M., Schlichenmaier, R., Schunker, H., Spruit, H. C., Strassmeier, K. G., Thompson, M. J. & Zharkov, S., Solar Physics, 267, 1
  3. Local Helioseismic and Spectroscopic Analyses of Interactions Between Acoustic Waves and a Sunspot [19]
    Rajaguru, S. P., Wachter, R., Sankarasubramanian, K. & Couvidat, S., ApJ, 721, L86

2008

  1. Impact of locally suppressed wave sources on helioseismic traveltimes [22]
    Hanasoge, S. M., Couvidat, S., Rajaguru, S. P. & Birch, A. C., MNRAS, 391, 1931
  2. Separating surface magnetic effects in sunspot seismology: new time-distance helioseismic diagnostics [3]
    Rajaguru, S. P., arXiv:0802.2756

2007

  1. Contamination by Surface Effects of Time-Distance Helioseismic Inversions for Sound Speed beneath Sunspots [36]
    Couvidat, S. & Rajaguru, S. P., ApJ, 661, 558
  2. Radiative Transfer Effects on Doppler Measurements as Sources of Surface Effects in Sunspot Seismology [42]
    Rajaguru, S. P., Sankarasubramanian, K., Wachter, R. & Scherrer, P. H., ApJ, 654, L175

2006

  1. Comparison of subsurface sound-speed structures of three active regions [3]
    Couvidat, S., Birch, A. C., Rajaguru, S. P. & Kosovichev, A. G., Solar Activity and its Magnetic Origin (Editors: Bothmer, Volker & Hady, Ahmed Abdel), IAU Symposium, 233, p. 75
  2. Influence of magnetic field on the Doppler measurements of velocity field in the solar photosphere and implications for helioseismology [3]
    Rajaguru, S. P., Wachter, R. & Hasan, S. S., Proceedings of the ILWS Workshop (Editors: Gopalswamy, N. & Bhattacharyya, A.), p. 21
  3. Sensitivity of Time-Distance Helioseismic Measurements to Spatial Variation of Oscillation Amplitudes. I. Observations and a Numerical Model [38]
    Rajaguru, S. P., Birch, A. C., Duvall, T. L., Jr., Thompson, M. J. & Zhao, J., ApJ, 646, 543
  4. Correcting Dopplergrams for solar active regions: consequences for local helioseismology [0]
    Wachter, R., Rajaguru, S. P. & Bogart, R. S., Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (Editors: Fletcher, Karen & Thompson, Michael), ESA Special Publication, 624, p. 48
  5. Systematic Errors in Dopplergrams of Active Regions and Their Correction [0]
    Wachter, R. & Rajaguru, S. P., Solar Polarization 4 (Editors: Casini, R. & Lites, B. W.), Astronomical Society of the Pacific Conference Series, 358, p. 100

2005

  1. Comparison of GONG and MDI: Sound-Speed Anomalies beneath Two Active Regions [19]
    Hughes, S. J., Rajaguru, S. P. & Thompson, M. J., ApJ, 627, 1040
  2. How Similar are Starspots to Sunspots? [0]
    Rajaguru, S. P., Kurucz, R. L. & Hasan, S. S., Bulletin of the Astronomical Society of India, 33, 362

2004

  1. Comparison of GONG and MDI Sound-Speed Anomalies Beneath Two Active Regions [1]
    Hughes, S. J., Rajaguru, S. P. & Thompson, M. J., SOHO 14 Helio- and Asteroseismology: Towards a Golden Future (Editors: Danesy, D.), ESA Special Publication, 559, p. 493
  2. Application of Local-Area Helioseismic Methods as Predictors of Space Weather [3]
    Jensen, J. M., Lundstedt, H., Thompson, M. J., Pijpers, F. P. & Rajaguru, S. P., SOHO 14 Helio- and Asteroseismology: Towards a Golden Future (Editors: Danesy, D.), ESA Special Publication, 559, p. 497
  3. Local Modulation of Solar Oscillations by Magnetic Fields [11]
    Nicholas, C. J., Thompson, M. J. & Rajaguru, S. P., Solar Physics, 225, 213
  4. The Effect of Strong Magnetic Fields on Acoustic Power in Their Surroundings at the Surface of the Sun [2]
    Nicholas, C. J., Thompson, M. J. & Rajaguru, S. P., SOHO 14 Helio- and Asteroseismology: Towards a Golden Future (Editors: Danesy, D.), ESA Special Publication, 559, p. 590
  5. Comparison OF Noise Properties Of GONG And MDI Time-Distance Helioseismic Data [16]
    Rajaguru, S. P., Hughes, S. J. & Thompson, M. J., Solar Physics, 220, 381

2003

  1. Time-distance analysis of GONG+ data [0]
    Rajaguru, S. P., Hughes, S. J. & Thompson, M. J., GONG+ 2002. Local and Global Helioseismology: the Present and Future (Editors: Sawaya-Lacoste, Huguette), ESA Special Publication, 517, p. 75
  2. Acoustic Wave Propagation in the Sun: Implications for Wave Field and Time-Distance Helioseismology [10]
    Tong, C. H., Thompson, M. J., Warner, M. R., Rajaguru, S. P. & Pain, C. C., ApJ, 582, L121

2002

  1. Convective Intensification of Magnetic Flux Tubes in Stellar Photospheres [12]
    Rajaguru, S. P., Kurucz, R. L. & Hasan, S. S., ApJ, 565, L101

2001

  1. Photospheric Flow Fields and Properties of Embedded Small-scale Magnetic Flux Concentrations [0]
    Rajaguru, S. P., Srikanth, R. & Hasan, S. S., Recent Insights into the Physics of the Sun and Heliosphere: Highlights from SOHO and Other Space Missions (Editors: Brekke, P\ral, Fleck, Bernhard & Gurman, Joseph B.), IAU Symposium, 203, p. 205
  2. Ring Diagram Analysis of the Characteristics of Solar Oscillation Modes in Active Regions [64]
    Rajaguru, S. P., Basu, Sarbani & Antia, H. M., ApJ, 563, 410

2000

  1. Radiative Transfer Effects and the Dynamics of Small-Scale Magnetic Structures on the Sun [11]
    Rajaguru, S. P. & Hasan, S. S., ApJ, 544, 522

1999

  1. Radiative Transfer Effects and Convective Collapse: Size(flux)-Strength Distribution for the Small-Scale Solar Magnetic Flux Tubes [1]
    Rajaguru, S. & Hasan, S., High Resolution Solar Physics: Theory, Observations, and Techniques (Editors: Rimmele, T. R., Balasubramaniam, K. S. & Radick, R. R.), Astronomical Society of the Pacific Conference Series, 183, p. 53
  2. Radiative Cooling, Convective Downflows and the Formation of Small-Scale Strong Magnetic Field Structures on the Sun [0]
    Rajaguru, S. Paul & Hasan, S. S., SOHO-9 Workshop on Helioseismic Diagnostics of Solar Convection and Activity (Editors: Duvall, Jr., T. L. & Kosovichev, A. G.), 9, p. 16

1997

  1. Determination of linear polarization of solar corona from observations of the eclipse of October 24, 1995. [0]
    Srikanth, R., Sharma, M. & Rajaguru, S., Kodaikanal Observatory Bulletins, 13, 59

Created on Wed Apr 8 04:30:18 2026.