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Shravan Hanasoge

Co-Principal Investigator (non-NYU)

    20062019
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    Research Output 2006 2019

    2019

    Detection of Rossby Waves in the Sun using Normal-mode Coupling

    Hanasoge, S. & Mandal, K., Feb 1 2019, In : Astrophysical Journal Letters. 871, 2, L32.

    Research output: Contribution to journalArticle

    Rossby wave
    planetary waves
    coupled modes
    sun
    rotating fluid
    ambient noise
    directivity
    cross correlation
    Signal to noise ratio
    Earth (planet)

    Latitudinal differential rotation in the solar analogues 16 Cygni A and B

    Bazot, M., Benomar, O., Christensen-Dalsgaard, J., Gizon, L., Hanasoge, S., Nielsen, M. B., Petit, P. & Sreenivasan, K., Mar 1 2019, In : Astronomy and Astrophysics. 623, 1834594.

    Research output: Contribution to journalArticle

    analogs
    stars
    equators
    poles
    oscillation

    Machine learning reveals systematic accumulation of electric current in lead-up to solar flares

    Dhuri, D. B., Hanasoge, S. & Cheung, M. C. M., Jun 4 2019, In : Proceedings of the National Academy of Sciences of the United States of America. 166, 23, p. 11141-11146 6 p.

    Research output: Contribution to journalArticle

    Solar Activity
    Magnetic Fields
    Physics
    Weather
    Radiation

    Supervised neural networks for helioseismic ring-diagram inversions

    Alshehhi, R., Hanson, C. S., Gizon, L. & Hanasoge, S., Feb 1 2019, In : Astronomy and Astrophysics. 622, A124.

    Research output: Contribution to journalArticle

    machine learning
    diagram
    diagrams
    inversions
    rings

    Validating Time-Distance Helioseismic Inversions for Nonseparable Subsurface Profiles of an Average Supergranule

    Dhruv, V., Bhattacharya, J. & Hanasoge, S. M., Oct 1 2019, In : Astrophysical Journal. 883, 2, 136.

    Research output: Contribution to journalArticle

    travel time
    inversions
    travel
    seismic wave
    seismic waves
    2018

    Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars

    Benomar, O., Bazot, M., Nielsen, M. B., Gizon, L., Sekii, T., Takata, M., Hotta, H., Hanasoge, S., Sreenivasan, K. & Christensen-Dalsgaard, J., Sep 21 2018, In : Science. 361, 6408, p. 1231-1234 4 p.

    Research output: Contribution to journalArticle

    Solar System
    Convection
    stellar oscillations
    asymmetry
    oscillation
    oscillators
    sun

    Helioseismic Inversion to Infer the Depth Profile of Solar Meridional Flow Using Spherical Born Kernels

    Mandal, K., Hanasoge, S., Rajaguru, S. P. & Antia, H. M., Aug 10 2018, In : Astrophysical Journal. 863, 1, 39.

    Research output: Contribution to journalArticle

    meridional flow
    travel time
    travel
    meridional circulation
    inversions

    Measurement Process and Inversions Using Helioseismic Normal-mode Coupling

    Hanasoge, S., Jul 1 2018, In : Astrophysical Journal. 861, 1, 46.

    Research output: Contribution to journalArticle

    coupled modes
    sun
    inversions
    solar interior
    spherical harmonics
    2017

    Discrete wave equation upscaling

    Fichtner, A. & Hanasoge, S., Apr 1 2017, In : Geophysical Journal International. 209, 1, p. 353-357 5 p.

    Research output: Contribution to journalArticle

    upscaling
    wave equation
    Wave equations
    wave equations
    Wave propagation
    coupled modes
    sun
    magnetic field
    sensitivity
    magnetic fields

    Finite-frequency Sensitivity Kernels in Spherical Geometry for Time-Distance Helioseismology

    Mandal, K., Bhattacharya, J., Halder, S. & Hanasoge, S., Jun 20 2017, In : Astrophysical Journal. 842, 2, 89.

    Research output: Contribution to journalArticle

    helioseismology
    travel time
    travel
    geometry
    sensitivity

    Numerical analysis of the lattice Boltzmann method for simulation of linear acoustic waves

    Dhuri, D. B., Hanasoge, S., Perlekar, P. & Robertsson, J. O. A., Apr 21 2017, In : Physical Review E. 95, 4, 043306.

    Research output: Contribution to journalArticle

    Lattice Boltzmann Method
    Acoustic Waves
    numerical analysis
    Numerical Analysis
    Lattice Boltzmann

    Recovery of subsurface profiles of supergranular flows via iterative inversion of synthetic travel times

    Bhattacharya, J., Hanasoge, S., Birch, A. C. & Gizon, L., Nov 1 2017, In : Astronomy and Astrophysics. 607, A129.

    Research output: Contribution to journalArticle

    travel time
    travel
    recovery
    inversions
    vertical profile

    Renormalization group theory outperforms other approaches in statistical comparison between upscaling techniques for porous media

    Hanasoge, S., Agarwal, U., Tandon, K. & Koelman, J. M. V. A., Sep 25 2017, In : Physical Review E. 96, 3, 033313.

    Research output: Contribution to journalArticle

    Upscaling
    group theory
    Group Theory
    Renormalization Group
    Porous Media

    Seismic sensitivity of normal-mode coupling to Lorentz stresses in the Sun

    Hanasoge, S., Sep 21 2017, In : Monthly Notices of the Royal Astronomical Society. 470, 3, p. 2780-2790 11 p., stx1342.

    Research output: Contribution to journalArticle

    coupled modes
    sun
    sensitivity
    stress tensors
    acoustics

    Sensitivity of helioseismic measurements of normal-mode coupling to flows and sound-speed perturbations

    Hanasoge, S., Woodard, M., Antia, H. M., Gizon, L. & Sreenivasan, K., Sep 11 2017, In : Monthly Notices of the Royal Astronomical Society. 470, 2, p. 1404-1420 17 p., stx1298.

    Research output: Contribution to journalArticle

    coupled modes
    derivation
    perturbation
    anomalies
    solar interior
    2016

    Asteroseismic determination of fundamental parameters of Sun-like stars using multilayered neural networks

    Verma, K., Hanasoge, S., Bhattacharya, J., Antia, H. M. & Krishnamurthi, G., Oct 1 2016, In : Monthly Notices of the Royal Astronomical Society. 461, 4, p. 4206-4214 9 p.

    Research output: Contribution to journalArticle

    sun
    stars
    metallicity
    observatories
    observatory

    Seismic Sounding of Convection in the Sun

    Hanasoge, S., Gizon, L. & Sreenivasan, K., Jan 3 2016, In : Annual Review of Fluid Mechanics. 48, p. 191-217 27 p.

    Research output: Contribution to journalArticle

    sounding
    sun
    convection
    seismic waves
    inference

    Spatio-spectral concentration of convolutions

    Hanasoge, S., May 15 2016, In : Journal of Computational Physics. 313, p. 674-686 13 p.

    Research output: Contribution to journalArticle

    Convolution
    convolution integrals
    Mathematical operators
    coefficients
    cut-off

    STRATEGIES in SEISMIC INFERENCE of SUPERGRANULAR FLOWS on the SUN

    Bhattacharya, J. & Hanasoge, S., Aug 1 2016, In : Astrophysical Journal. 826, 2, 105.

    Research output: Contribution to journalArticle

    profiles
    iteration
    inversions
    deviation
    helioseismology
    2015

    Frequency shifts of resonant modes of the Sun due to near-surface convective scattering

    Bhattacharya, J., Hanasoge, S. & Antia, H. M., Jan 1 2015, In : Proceedings of the International Astronomical Union. 11, A29B, p. 614-619 6 p.

    Research output: Contribution to journalArticle

    frequency shift
    sun
    convection
    oscillation
    scattering

    FREQUENCY SHIFTS OF RESONANT MODES OF THE SUN DUE TO NEAR-SURFACE CONVECTIVE SCATTERING

    Bhattacharya, J., Hanasoge, S. & Antia, H. M., Jun 20 2015, In : Astrophysical Journal. 806, 2, 246.

    Research output: Contribution to journalArticle

    frequency shift
    sun
    convection
    oscillation
    scattering

    Interpreting cross-correlations in seismology

    Hanasoge, S., Jan 1 2015, Extraterrestrial Seismology. Cambridge University Press, p. 353-364 12 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    seismology
    cross correlation
    sun
    tomography
    stellar interiors

    Simulating acoustic waves in spotted stars

    Papini, E., Birch, A. C., Gizon, L. & Hanasoge, S., May 1 2015, In : Astronomy and Astrophysics. 577, A145.

    Research output: Contribution to journalArticle

    acoustic wave
    stars
    acoustics
    spherical harmonics
    starspots

    Solar Dynamics, Rotation, Convection and Overshoot

    Hanasoge, S., Miesch, M. S., Roth, M., Schou, J., Schüssler, M. & Thompson, M. J., Dec 1 2015, In : Space Science Reviews. 196, 1-4, p. 79-99 21 p.

    Research output: Contribution to journalReview article

    meridional flow
    helioseismology
    inference
    convection
    methodology
    2014

    Additional Evidence Supporting a Model of Shallow, High-Speed Supergranulation

    Duvall, T. L., Hanasoge, S. & Chakraborty, S., Jan 1 2014, In : Solar Physics. 289, 9, p. 3421-3433 13 p.

    Research output: Contribution to journalArticle

    travel time
    travel
    high speed
    annuli
    quadrants

    Full waveform inversion for time-distance helioseismology

    Hanasoge, S. & Tromp, J., Mar 20 2014, In : Astrophysical Journal. 784, 1, 69.

    Research output: Contribution to journalArticle

    helioseismology
    waveforms
    inversions
    travel time
    travel

    Full waveform inversion of solar interior flows

    Hanasoge, S., Dec 10 2014, In : Astrophysical Journal. 797, 1, 23.

    Research output: Contribution to journalArticle

    solar interior
    waveforms
    inversions
    seismic noise
    helioseismology

    Subsurface supergranular vertical flows as measured using large distance separations in time-distance helioseismology

    Duvall, T. L. & Hanasoge, S., Jan 1 2014, Solar Dynamics and Magnetism from the Interior to the Atmosphere. Springer New York, p. 71-83 13 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    helioseismology
    travel
    filters
    annuli
    photosphere

    The Quest to Understand Supergranulation and Large-Scale Convection in the Sun

    Hanasoge, S. & Sreenivasan, K., 2014, In : Solar Physics. 289, 9, p. 3403-3419 17 p.

    Research output: Contribution to journalArticle

    sun
    convection
    meridional circulation
    Reynolds stress
    stratification
    2013

    Interpreting cross-correlations of one-bit filtered seismic noise

    Hanasoge, S. & Branicki, M., Dec 1 2013, In : Geophysical Journal International. 195, 3, p. 1811-1830 20 p.

    Research output: Contribution to journalArticle

    seismic noise
    cross correlation
    Tectonics
    tectonics
    perturbation

    Measurements and kernels for source-structure inversions in noise tomography

    Hanasoge, S., Jan 1 2013, In : Geophysical Journal International. 196, 2, p. 971-985 15 p.

    Research output: Contribution to journalArticle

    tomography
    Tomography
    inversions
    seismic noise
    cross correlation

    Propagation of seismic waves through a spatio-temporally fluctuating medium: Homogenization

    Hanasoge, S., Gizon, L. & Bal, G., Aug 20 2013, In : Astrophysical Journal. 773, 2, 101.

    Research output: Contribution to journalArticle

    seismic waves
    homogenizing
    seismic wave
    sun
    propagation

    Seismic constraints on rotation of Sun-like star and mass of exoplanet

    Gizon, L., Ballot, J., Michel, E., Stahn, T., Vauclair, G., Bruntt, H., Quirion, P. O., Benomar, O., Vauclair, S., Appourchaux, T., Auvergne, M., Baglin, A., Barban, C., Baudin, F., Bazot, M., Campante, T., Catala, C., Chaplin, W., Creevey, O., Deheuvels, S. & 15 others, Dolez, N., Elsworth, Y., García, R., Gaulme, P., Mathis, S., Mathur, S., Mosser, B., Régulo, C., Roxburgh, I., Salabert, D., Samadi, R., Sato, K., Verner, G., Hanasoge, S. & Sreenivasan, K., Aug 13 2013, In : Proceedings of the National Academy of Sciences of the United States of America. 110, 33, p. 13267-13271 5 p.

    Research output: Contribution to journalArticle

    Solar System
    Planets
    Orbit
    Magnetic Fields
    Observation

    Subsurface Supergranular Vertical Flows as Measured Using Large Distance Separations in Time-Distance Helioseismology

    Duvall, T. L. & Hanasoge, S., Oct 1 2013, In : Solar Physics. 287, 1-2, p. 71-83 13 p.

    Research output: Contribution to journalArticle

    helioseismology
    travel time
    travel
    filter
    filters

    Testing Helioseismic-Holography Inversions for Supergranular Flows Using Synthetic Data

    Dombroski, D. E., Birch, A. C., Braun, D. C. & Hanasoge, S., Jan 1 2013, In : Solar Physics. 282, 2, p. 361-378 18 p.

    Research output: Contribution to journalArticle

    holography
    inversions
    convection
    helioseismology
    mass flow

    The influence of noise sources on cross-correlation amplitudes

    Hanasoge, S., Mar 26 2013, In : Geophysical Journal International. 192, 1, p. 295-309 15 p.

    Research output: Contribution to journalArticle

    cross correlation
    Green's function
    wave attenuation
    Surface waves
    Spatial distribution
    2012

    Anomalously weak solar convection

    Hanasoge, S., Duvall, T. L. & Sreenivasan, K., Jul 24 2012, In : Proceedings of the National Academy of Sciences of the United States of America. 109, 30, p. 11928-11932 5 p.

    Research output: Contribution to journalArticle

    Convection
    Solar System
    Coriolis Force
    Entropy
    Hot Temperature

    Detectable seismic consequences of the interaction of A primordial black hole with Earth

    Luo, Y., Hanasoge, S., Tromp, J. & Pretorius, F., May 20 2012, In : Astrophysical Journal. 751, 1, 16.

    Research output: Contribution to journalArticle

    seismic wave
    interactions
    collision
    perturbation
    collision rates

    Multichannel Three-Dimensional SOLA Inversion for Local Helioseismology

    Jackiewicz, J., Birch, A. C., Gizon, L., Hanasoge, S., Hohage, T., Ruffio, J. B. & Švanda, M., Feb 1 2012, In : Solar Physics. 276, 1-2, p. 19-33 15 p.

    Research output: Contribution to journalArticle

    helioseismology
    inverse problem
    inversions
    solar interior
    seismic data

    Seismic probes of solar interior magnetic structure

    Hanasoge, S., Birch, A., Gizon, L. & Tromp, J., Sep 6 2012, In : Physical Review Letters. 109, 10, 101101.

    Research output: Contribution to journalArticle

    solar interior
    probes
    advection
    sun
    inversions
    2011

    Lattice Boltzmann method for electromagnetic wave propagation

    Hanasoge, S., Succi, S. & Orszag, S. A., Oct 1 2011, In : EPL. 96, 1, 14002.

    Research output: Contribution to journalArticle

    wave propagation
    electromagnetic radiation
    Maxwell equation
    Boltzmann distribution
    spectral methods

    The adjoint method applied to time-distance helioseismology

    Hanasoge, S., Birch, A., Gizon, L. & Tromp, J., Sep 1 2011, In : Astrophysical Journal. 738, 1, 100.

    Research output: Contribution to journalArticle

    adjoint method
    helioseismology
    inversions
    sensitivity
    wave spectrum

    Transient solar oscillations driven by primordial black holes

    Kesden, M. & Hanasoge, S., Sep 8 2011, In : Physical Review Letters. 107, 11, 111101.

    Research output: Contribution to journalArticle

    transient oscillations
    solar oscillations
    stars
    solar observatories
    asteroids

    Validated helioseismic inversions for 3D vector flows

    Švanda, M., Gizon, L., Hanasoge, S. & Ustyugov, S. D., Jun 2 2011, In : Astronomy and Astrophysics. 530, A148.

    Research output: Contribution to journalArticle

    travel time
    travel
    inversions
    helioseismology
    convective flow
    2010
    absorbing boundary
    perfectly matched layers
    hydrodynamic equations
    hydrodynamics
    formulations

    Erratum: Helioseismology of sunspots: A case study of NOAA Region 9787 (Space Science Reviews (2009) 144 (249-273) DOI:10.1007/s11214-008-9466-5)

    Gizon, L., Schunker, H., Baldner, C. S., Basu, S., Birch, A. C., Bogart, R. S., Braun, D. C., Cameron, R., Duvall, T. L., Hanasoge, S., Jackiewicz, J., Roth, M., Stahn, T., Thompson, M. J. & Zharkov, S., Oct 1 2010, In : Space Science Reviews. 156, 1-4, p. 257-258 2 p.

    Research output: Contribution to journalComment/debate

    helioseismology
    aerospace sciences
    sunspots
    sunspot
    science

    Modeling the Subsurface Structure of Sunspots

    Moradi, H., Baldner, C., Birch, A. C., Braun, D. C., Cameron, R. H., Duvall, T. L., Gizon, L., Haber, D., Hanasoge, S., 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. & 2 others, Thompson, M. J. & Zharkov, S., Nov 1 2010, In : Solar Physics. 267, 1, p. 1-62 62 p.

    Research output: Contribution to journalArticle

    sunspots
    sunspot
    modeling
    helioseismology
    forward modeling