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Shravan Hanasoge

Co-Principal Investigator (non-NYU)

20062019
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Research Output 2006 2019

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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

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

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
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

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

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

Noise cross-correlation sensitivity kernels

Tromp, J., Luo, Y., Hanasoge, S. & Peter, D., Nov 1 2010, In : Geophysical Journal International. 183, 2, p. 791-819 29 p.

Research output: Contribution to journalArticle

cross correlation
receivers
sensitivity
Tomography
Seismic waves

Seismic constraints on interior solar convection

Hanasoge, S., Duvall, T. L. & DeRosa, M. L., Jan 1 2010, In : Astrophysical Journal Letters. 712, 1 PART 2

Research output: Contribution to journalArticle

helioseismology
convection
cells
sensitivity
spherical harmonics
2009

A wave scattering theory of solar seismic power haloes

Hanasoge, S., Aug 1 2009, In : Astronomy and Astrophysics. 503, 2, p. 595-599 5 p.

Research output: Contribution to journalArticle

wave scattering
halos
scattering
sunspot
sunspots

Helioseismology of sunspots: A case study of NOAA Region 9787

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., Apr 1 2009, In : Space Science Reviews. 144, 1-4, p. 249-273 25 p.

Research output: Contribution to journalArticle

helioseismology
sunspots
sunspot
travel
travel time

Multiple scattering of waves by a pair of gravitationally stratified flux tubes

Hanasoge, S. & Cally, P. S., Jan 1 2009, In : Astrophysical Journal. 697, 1, p. 651-659 9 p.

Research output: Contribution to journalArticle

scattering
tubes
near fields
jackets
induction