Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Lisa A Upton"'
Autor:
Bibhuti Kumar Jha, Lisa A. Upton
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L15 (2024)
The process of the Sun’s polar field cancellation reversal commences with the emergence of new cycle Hale’s polarity active regions. Once the Sun undergoes polarity reversal, typically occurring near the peak of solar activity, it begins the proc
Externí odkaz:
https://doaj.org/article/3c7822b6373b486f9bedfae140a21735
Autor:
Kalman J. Knizhnik, Micah J. Weberg, Ajeet Singh Zaveri, Ignacio Ugarte-Urra, Yi-Ming Wang, Lisa A. Upton, Elena Provornikova
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 154 (2024)
A significant challenge facing heliospheric models is the lack of full Sun observational coverage. The lack of information about the farside photospheric magnetic field necessitates the use of various techniques to approximate the structure and appea
Externí odkaz:
https://doaj.org/article/f9044aa541794dbeb205b729c5d0b9ee
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 114 (2024)
Observations of the Sun’s photospheric magnetic field are often confined to the Sun–Earth line. Surface flux transport (SFT) models, such as the Advective Flux Transport (AFT) model, simulate the evolution of the photospheric magnetic field to pr
Externí odkaz:
https://doaj.org/article/638bcebd6f3342b982f3f81473eca2ef
Autor:
Kalman J. Knizhnik, Micah J. Weberg, Elena Provornikova, Harry P. Warren, Mark G. Linton, Shaheda Begum Shaik, Yuan-Kuen Ko, Samuel J. Schonfeld, Ignacio Ugarte-Urra, Lisa A. Upton
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 188 (2024)
The launches of Parker Solar Probe (Parker) and Solar Orbiter (SolO) are enabling a new era of solar wind studies that track the solar wind from its origin at the photosphere, through the corona, to multiple vantage points in the inner heliosphere. A
Externí odkaz:
https://doaj.org/article/9bf745bd36cf4330ab41744ef43d90e1
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
We measure differential rotation and meridional flow in the Sun’s surface shear layer by tracking the motions of the magnetic network seen in magnetograms from SOHO/MDI and SDO/HMI over solar cycles 23, 24, and the start of 25 (1996–2022). We exa
Externí odkaz:
https://doaj.org/article/b52e3d22f6b74a248921f0e7574b22fd
The meridional circulation at high latitudes is crucial to the build-up and reversal of the Sun's polar magnetic fields. Here we characterize the axisymmetric flows by applying a magnetic feature cross-correlation procedure to high resolution magneto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7623c132a20df3c4bd7ee86dfb7fc0c2
http://arxiv.org/abs/1211.0944
http://arxiv.org/abs/1211.0944
Publikováno v:
Astrophysical Journal; 9/10/2021, Vol. 846 Issue 2, p1-1, 1p