Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Chris S. Hanson"'
Autor:
Prasad Mani, Chris S. Hanson, Siddharth Dhanpal, Shravan Hanasoge, Srijan Bharati Das, Matthias Rempel
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 186 (2024)
Magnetic flux emergence from the convection zone into the photosphere and beyond is a critical component of the behavior of large-scale solar magnetism. Flux rarely emerges amid field-free areas at the surface, but when it does, the interaction betwe
Externí odkaz:
https://doaj.org/article/a27fc8f6663a4b8ca63d9f12ddff2aca
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 55 (2024)
Inertial wave modes in the Sun are of interest owing to their potential to reveal new insight into the solar interior. These predominantly retrograde-propagating modes in the solar subsurface appear to deviate from the thin-shell Rossby–Haurwitz mo
Externí odkaz:
https://doaj.org/article/d45e0c2be6b94087bae5770aa43ac8cc
Publikováno v:
Nature Astronomy. 6:708-714
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fec07ac9f008b429851ca281d33fcda9
https://doi.org/10.1038/s41550-022-01632-z
https://doi.org/10.1038/s41550-022-01632-z
The technique of normal-mode coupling is a powerful tool with which to seismically image non-axisymmetric phenomena in the Sun. Here we apply mode coupling in the Cartesian approximation to probe steady, near-surface flows in the Sun. Using Doppler c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::716518773b0662b2dd7631b117c6cacd
http://arxiv.org/abs/2201.00178
http://arxiv.org/abs/2201.00178
Normal-mode coupling is a technique applied to probe the solar interior using surface observations of oscillations. The technique, which is straightforward to implement, makes more use of the seismic information in the wavefield than other comparable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dfd7d21d53a17833e29a13ebb141134
http://arxiv.org/abs/2102.08715
http://arxiv.org/abs/2102.08715
Autor:
Robert H. Cameron, Damien Fournier, Aaron C. Birch, Zhi-Chao Liang, Laurent Gizon, Chris S. Hanson, Majid Pourabdian
Publikováno v:
Science
The flow of plasma inside the SunThe activity of the Sun, including the occurrence of sunspots, is driven by magnetic fields that originate from the motion of charged plasma beneath the surface. Helioseismology uses acoustic oscillations to probe the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8f7f12a6bb1e4573ec0163eac38fc2f
Context: Giant-cell convection is believed to be an important component of solar dynamics. For example, it is expected to play a crucial role in maintaining the Sun's differential rotation. Aims: We re-examine early reports of giant convective cells
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef7c62add724741093b04e47ca999c00
The inversion of ring fit parameters to obtain subsurface flow maps in ring-diagram analysis for 8 years of SDO observations is computationally expensive, requiring ~3200 CPU hours. In this paper we apply machine learning techniques to the inversion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::392b573693ac3ac644bf28c16ab0aee2
http://arxiv.org/abs/1901.01505
http://arxiv.org/abs/1901.01505
Publikováno v:
Astronomy & Astrophysics. 635:A109
Context: Solar sectoral Rossby waves have only recently been unambiguously identified in Helioseimsic and Magnetic Imager (HMI) and Michelson Doppler Imager (MDI) maps of flows near the solar surface. So far this has not been done with the Global Osc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7cf80afa7328d0aa1c91b91e751950
https://doi.org/10.1051/0004-6361/201937321
https://doi.org/10.1051/0004-6361/201937321
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 616, ⟨10.1051/0004-6361/201833206⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 616, ⟨10.1051/0004-6361/201833206⟩
Context. The interpretation of helioseismic measurements, such as wave travel-time, is based on the computation of kernels that give the sensitivity of the measurements to localized changes in the solar interior. These kernels are computed using the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::733ac87905bc7887541139fd3be59f4e
https://hal.inria.fr/hal-01938331/file/aa33206-18.pdf
https://hal.inria.fr/hal-01938331/file/aa33206-18.pdf