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Solar magnetic field and its influence on solar variability and activity

Publications

The Dimmest State of the Sun

Author(s): K. L. Yeo, S. K. Solanki, N. A. Krivova, M. Rempel, L. S. Anusha, A. I. Shapiro, R. V. Tagirov, V. Witzke
Published in: Geophysical Research Letters, Issue 47/19, 2020, ISSN 0094-8276
DOI: 10.1029/2020gl090243

Achievements of Hinode in the first eleven years

Author(s): Khalid Al-Janabi, Patrick Antolin, Deborah Baker, Luis R Bellot Rubio, Louisa Bradley, David H Brooks, Rebecca Centeno, J Leonard Culhane, Giulio Del Zanna, George A Doschek, Lyndsay Fletcher, Hirohisa Hara, Louise K Harra, Andrew S Hillier, Shinsuke Imada, James A Klimchuk, John T Mariska, Tiago M D Pereira, Katharine K Reeves, Taro Sakao, Takashi Sakurai, Toshifumi Shimizu, Masumi Shimojo, Daiko
Published in: Publications of the Astronomical Society of Japan, Issue 71/5, 2019, ISSN 0004-6264
DOI: 10.1093/pasj/psz084

Slow magneto-acoustic waves in simulations of a solar plage region carry enough energy to heat the chromosphere

Author(s): N. Yadav, R. H. Cameron, S. K. Solanki
Published in: Astronomy and Astrophysics, Issue 652, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/202039908

3D Radiative MHD Simulations of Starspots

Author(s): Mayukh Panja, Robert Cameron, Sami K. Solanki
Published in: The Astrophysical Journal, Issue 893/2, 2020, Page(s) 113, ISSN 1538-4357
DOI: 10.3847/1538-4357/ab8230

Impulsive coronal heating during the interaction of surface magnetic fields in the lower solar atmosphere

Author(s): L. P. Chitta, H. Peter, E. R. Priest, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 644, 2020, Page(s) A130, ISSN 0004-6361
DOI: 10.1051/0004-6361/202039099

Coronal Heating and Solar Wind Formation in Quiet Sun and Coronal Holes: A Unified Scenario

Author(s): D. Tripathi1, V. N. Nived, S. K. Solanki
Published in: The Astrophysical Journal, Issue 908/28, 2021, ISSN 1538-4357
DOI: 10.3847/1538-4357/abcc6b

Power spectrum of turbulent convection in the solar photosphere

Author(s): L. Yelles Chaouche, R. H. Cameron, S. K. Solanki, T. L. Riethmüller, L. S. Anusha, V. Witzke, A. I. Shapiro, P. Barthol, A. Gandorfer, L. Gizon, J. Hirzberger, M. van Noort, J. Blanco Rodríguez, J. C. Del Toro Iniesta, D. Orozco Suárez, W. Schmidt, V. Martínez Pillet, M. Knölker
Published in: Astronomy & Astrophysics, Issue 644, 2020, Page(s) A44, ISSN 0004-6361
DOI: 10.1051/0004-6361/202037545

Modeling stellar Ca II H & K emission variations. I. Effect of inclination on the S-index

Author(s): K. Sowmya, A. I. Shapiro, V. Witzke, N.-E. Nèmec, T. Chatzistergos, K. L. Yeo, N. A. Krivova, S. K. Solanki
Published in: The Astrophysical Journal, Issue 914/21, 2021, ISSN 1538-4357
DOI: 10.3847/1538-4357/abf247

Sunspot Simulations: Penumbra Formation and the Fluting Instability

Author(s): Mayukh Panja, Robert H. Cameron, Sami K. Solanki
Published in: The Astrophysical Journal, Issue 907/2, 2021, Page(s) 102, ISSN 1538-4357
DOI: 10.3847/1538-4357/abccbf

Ti I lines at 2.2 μm as probes of the cool parts of sunspots

Author(s): H. N. Smitha, J. S. Castellanos Durán, S. K. Solanki, S. K. Tiwari
Published in: Astronomy and Astrophysics, Issue 653, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/202141447

Connecting the Wilson depression to the magnetic field of sunspots

Author(s): B. Löptien, A. Lagg, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 635, 2020, Page(s) A202, ISSN 0004-6361
DOI: 10.1051/0004-6361/201936975

Magnetohydrostatic modeling of AR11768 based on a SUNRISE/IMaX vector magnetogram

Author(s): X. Zhu, T. Wiegelmann, S K. Solanki
Published in: Astronomy & Astrophysics, Issue 640, 2020, Page(s) A103, ISSN 0004-6361
DOI: 10.1051/0004-6361/202037766

Simulations Show that Vortex Flows Could Heat the Chromosphere in Solar Plage

Author(s): Nitin Yadav, R. H. Cameron, S. K. Solanki
Published in: The Astrophysical Journal, Issue 894/2, 2020, Page(s) L17, ISSN 2041-8213
DOI: 10.3847/2041-8213/ab8dc5

Correction of atmospheric stray light in restored slit spectra

Author(s): S. Saranathan, M. van Noort, S. K. Solanki
Published in: Astronomy and Astrophysics, Issue 653, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/201937100

Nonequilibrium Equation of State in Stellar Atmospheres

Author(s): L. S. Anusha, M. van Noort, R. H. Cameron
Published in: The Astrophysical Journal, Issue 911/1, 2021, Page(s) 71, ISSN 0004-637X
DOI: 10.3847/1538-4357/abe45d

How faculae and network relate to sunspots, and the implications for solar and stellar brightness variations

Author(s): K. L. Yeo, S. K. Solanki, N. A. Krivova
Published in: Astronomy & Astrophysics, Issue 639, 2020, Page(s) A139, ISSN 0004-6361
DOI: 10.1051/0004-6361/202037739

The influence of NLTE effects in Fe I lines on an inverted atmosphere

Author(s): H. N. Smitha, R. Holzreuter, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 647, 2021, Page(s) A46, ISSN 0004-6361
DOI: 10.1051/0004-6361/202039107

The magnetic fine structure of the Sun’s polar region as revealed by Sunrise

Author(s): A. Prabhu, A. Lagg, J. Hirzberger, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 644, 2020, Page(s) A86, ISSN 0004-6361
DOI: 10.1051/0004-6361/202038704

The Small-scale Structure of Photospheric Convection Retrieved by a Deconvolution Technique Applied to Hinode /SP Data

Author(s): T. Oba, T. L. Riethmüller, S. K. Solanki, Y. Iida, C. Quintero Noda, T. Shimizu
Published in: The Astrophysical Journal, Issue 849/1, 2017, Page(s) 7, ISSN 1538-4357
DOI: 10.3847/1538-4357/aa8e44

Solar Irradiance Variability is Caused by the Magnetic Activity on the Solar Surface

Author(s): Kok Leng Yeo, Sami K. Solanki, Charlotte M. Norris, Benjamin Beeck, Yvonne C. Unruh, Natalie A. Krivova
Published in: Physical Review Letters, Issue 119/9, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.091102

Probing photospheric magnetic fields with new spectral line pairs

Author(s): H. N. Smitha, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 608, 2017, Page(s) A111, ISSN 0004-6361
DOI: 10.1051/0004-6361/201731261

Evershed and Counter-Evershed Flows in Sunspot MHD Simulations

Author(s): A. L. Siu-Tapia, M. Rempel, A. Lagg, S. K. Solanki
Published in: The Astrophysical Journal, Issue 852/2, 2018, Page(s) 66, ISSN 1538-4357
DOI: 10.3847/1538-4357/aaa007

Frequently Occurring Reconnection Jets from Sunspot Light Bridges

Author(s): Hui Tian, Vasyl Yurchyshyn, Hardi Peter, Sami K. Solanki, Peter R. Young, Lei Ni, Wenda Cao, Kaifan Ji, Yingjie Zhu, Jingwen Zhang, Tanmoy Samanta, Yongliang Song, Jiansen He, Linghua Wang, Yajie Chen
Published in: The Astrophysical Journal, Issue 854/2, 2018, Page(s) 92, ISSN 1538-4357
DOI: 10.3847/1538-4357/aaa89d

Solar polarimetry in the K I D 2 line : A novel possibility for a stratospheric balloon

Author(s): C. Quintero Noda, G. L. Villanueva, Y. Katsukawa, S. K. Solanki, D. Orozco Suárez, B. Ruiz Cobo, T. Shimizu, T. Oba, M. Kubo, T. Anan, K. Ichimoto, Y. Suematsu
Published in: Astronomy & Astrophysics, Issue 610, 2018, Page(s) A79, ISSN 0004-6361
DOI: 10.1051/0004-6361/201732111

Emission of solar chromospheric and transition region features related to the underlying magnetic field

Author(s): K. Barczynski, H. Peter, L. P. Chitta, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 619, 2018, Page(s) A5, ISSN 0004-6361
DOI: 10.1051/0004-6361/201731650

Nature of the energy source powering solar coronal loops driven by nanoflares

Author(s): L. P. Chitta, H. Peter, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 615, 2018, Page(s) L9, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833404

Observations of solar chromospheric heating at sub-arcsec spatial resolution

Author(s): H. N. Smitha, L. P. Chitta, T. Wiegelmann, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 617, 2018, Page(s) A128, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833276

Dark Structures in Sunspot Light Bridges

Author(s): Jingwen Zhang, Hui Tian, Sami K. Solanki, Haimin Wang, Hardi Peter, Kwangsu Ahn, Yan Xu, Yingjie Zhu, Wenda Cao, Jiansen He, Linghua Wang
Published in: The Astrophysical Journal, Issue 865/1, 2018, Page(s) 29, ISSN 1538-4357
DOI: 10.3847/1538-4357/aada0a

Measuring the Wilson depression of sunspots using the divergence-free condition of the magnetic field vector

Author(s): B. Löptien, A. Lagg, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 619, 2018, Page(s) A42, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833571

Temporal evolution of arch filaments as seen in He I 10 830 Å

Author(s): S. J. González Manrique, C. Kuckein, M. Collados, C. Denker, S. K. Solanki, P. Gömöry, M. Verma, H. Balthasar, A. Lagg, A. Diercke
Published in: Astronomy & Astrophysics, Issue 617, 2018, Page(s) A55, ISSN 0004-6361
DOI: 10.1051/0004-6361/201832684

Detection of spatially structured scattering polarization of Sr I 4607.3 Å with the Fast Solar Polarimeter

Author(s): F. Zeuner, A. Feller, F. A. Iglesias, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 619, 2018, Page(s) A179, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833241

The potential of many-line inversions of photospheric spectropolarimetric data in the visible and near UV

Author(s): T. L. Riethmüller, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 622, 2019, Page(s) A36, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833379

A comparison between solar plage and network properties

Author(s): D. Buehler, A. Lagg, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 630, 2019, Page(s) A86, ISSN 0004-6361
DOI: 10.1051/0004-6361/201833585

Using the infrared iron lines to probe solar subsurface convection

Author(s): I. Milić, H. N. Smitha, A. Lagg
Published in: Astronomy & Astrophysics, Issue 630, 2019, Page(s) A133, ISSN 0004-6361
DOI: 10.1051/0004-6361/201935126

Solar Disk Center Shows Scattering Polarization in the Sr i 4607 Å Line

Author(s): Franziska Zeuner, Rafael Manso Sainz, Alex Feller, Michiel van Noort, Sami K. Solanki, Francisco A. Iglesias, Kevin Reardon, Valentín Martínez Pillet
Published in: The Astrophysical Journal, Issue 893/2, 2020, Page(s) L44, ISSN 2041-8213
DOI: 10.3847/2041-8213/ab86b8

Detection of the Strongest Magnetic Field in a Sunspot Light Bridge

Author(s): J. S. Castellanos Durán, Andreas Lagg, Sami K. Solanki, Michiel van Noort
Published in: The Astrophysical Journal, Issue 895/2, 2020, Page(s) 129, ISSN 1538-4357
DOI: 10.3847/1538-4357/ab83f1

Radiative transfer with opacity distribution functions: Application to narrow band filters

Author(s): L. S. Anusha, A. I. Shapiro, V. Witzke, M. Cernetic, S. K. Solanki, L. Gizon
Published in: The Astrophysical Journal Supplement Series, Issue 255/3, 2021, ISSN 1538-4365
DOI: 10.3847/1538-4365/abfb72

Predictions of Astrometric Jitter for Sun-like Stars. II. Dependence on Inclination, Metallicity, and Active-Region Nesting

Author(s): K. Sowmya, N.-E. Nèmec, A. I. Shapiro, E. Işık, V. Witzke, A. Mints, N. A. Krivova, S. K. Solanki
Published in: Astrophysical Journal, Issue 919/2, 2021, ISSN 1538-4357
DOI: 10.3847/1538-4357/ac111b

Vortex flow properties in simulations of solar plage region: Evidence for their role in chromospheric heating

Author(s): N. Yadav, R. H. Cameron, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 645, 2021, Page(s) A3, ISSN 0004-6361
DOI: 10.1051/0004-6361/202038965

Transient small-scale brightenings in the quiet solar corona: A model for campfires observed with Solar Orbiter

Author(s): Y. Chen, D. Przybylski, H. Peter, H. Tian, F. Auchère, D. Berghmans
Published in: Astronomy & Astrophysics, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/202140638

On the Magnetic Nature of an Exploding Granule as Revealed by Sunrise/IMaX

Author(s): Salvo L. Guglielmino, Valentín Martínez Pillet, Basilio Ruiz Cobo, Luis R. Bellot Rubio, José Carlos del Toro Iniesta, Sami K. Solanki, Tino L. Riethmüller, Francesca Zuccarello
Published in: The Astrophysical Journal, Issue 896/1, 2020, Page(s) 62, ISSN 1538-4357
DOI: 10.3847/1538-4357/ab917b

The influence of NLTE effects in Fe I lines on an inverted atmosphere

Author(s): H. N. Smitha, R. Holzreuter, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 633, 2020, Page(s) A157, ISSN 0004-6361
DOI: 10.1051/0004-6361/201937041

No universal connection between the vertical magnetic field and the umbra-penumbra boundary in sunspots

Author(s): B. Löptien, A. Lagg, M. van Noort, S. K. Solanki
Published in: Astronomy & Astrophysics, Issue 639, 2020, Page(s) A106, ISSN 0004-6361
DOI: 10.1051/0004-6361/202037974

How rare are counter Evershed flows?

Author(s): J. S. Castellanos Durán, A. Lagg, S. K. Solanki
Published in: Astronomy and Astrophysics, Issue 651, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/202141159

The relationship between bipolar magnetic regions and their sunspots

Author(s): K. L. Yeo, S. K. Solanki, N. A. Krivova, J. Jiang
Published in: Astronomy ans Astrophysics, Issue 654, 2021, ISSN 0004-6361
DOI: 10.1051/0004-6361/202141336