Zobrazeno 1 - 10
of 89
pro vyhledávání: '"K. D. Leka"'
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 168 (2024)
Solar energetic events are caused by the release of magnetic energy accumulated in the solar atmosphere. To understand their initiating physical mechanisms, the dynamics of the coronal magnetic fields must be studied. Unfortunately, the dominant mech
Externí odkaz:
https://doaj.org/article/5434a8f54e97462aaa03bbcf3ce17399
Autor:
Ruoyu Wang, David F. Fouhey, Richard E. L. Higgins, Spiro K. Antiochos, Graham Barnes, J. Todd Hoeksema, K. D. Leka, Yang Liu, Peter W. Schuck, Tamas I. Gombosi
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 168 (2024)
Vector magnetograms of the Sun’s photosphere are cornerstones for much of solar physics research. These data are often produced by data-analysis pipelines combining per-pixel Stokes polarization vector inversion with a disambiguation that resolves
Externí odkaz:
https://doaj.org/article/5f136cbe855a46b7986b1f514f70a5d8
Publikováno v:
The Astrophysical Journal, Vol 942, Iss 2, p 84 (2023)
A large sample of active-region-targeted time-series images from the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA), the AIA Active Region Patch database (Paper I) is used to investigate whether parameters describing the coronal, trans
Externí odkaz:
https://doaj.org/article/9143b26c0c8e4842b265f825fde77985
Publikováno v:
The Astrophysical Journal, Vol 942, Iss 2, p 83 (2023)
We begin here a series of papers examining the chromospheric and coronal properties of solar active regions. This first paper describes an extensive data set of images from the Atmospheric Imaging Assembly on the Solar Dynamics Observatory curated fo
Externí odkaz:
https://doaj.org/article/2e6d119eafc44d7cbb92bac7c47fb19c
Autor:
David F. Fouhey, Richard E. L. Higgins, Spiro K. Antiochos, Graham Barnes, Marc L. DeRosa, J. Todd Hoeksema, K. D. Leka, Yang Liu, Peter W. Schuck, Tamas I. Gombosi
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 264, Iss 2, p 49 (2023)
We investigate the cross-calibration of the Hinode/Solar Optical Telescope-Spectro-Polarimeter (SOT-SP) and Solar Dynamics Observatory/Helioseismic and Magnetic Imager (SDO/HMI) instrument metadata, specifically the correspondence of the scaling and
Externí odkaz:
https://doaj.org/article/1a7bf6cc159e4a74ab2c6d76184d226e
A large sample of active-region-targeted time-series images from the Solar Dynamics Observatory / Atmospheric Imaging Assembly, the AIA Active Region Patch database ("AARPs", Paper I: Dissauer et al 2022) is used to investigate whether parameters des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49d561205ce9bd0e97f8b590aeb7f544
http://arxiv.org/abs/2212.11255
http://arxiv.org/abs/2212.11255
Publikováno v:
Solar Physics. 297
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::789b2e2e6d4fb1d79c7226273cdc0c65
https://doi.org/10.1007/s11207-022-02079-1
https://doi.org/10.1007/s11207-022-02079-1
Publikováno v:
Solar Physics. 297
The problem of bias, meaning over- or underestimation, of the component perpendicular to the line-of-sight, Bperp, in vector magnetic field maps is discussed. Previous works on this topic have illustrated that the problem exists; here we perform nove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bffc977a8522557facdaa679f7bd106
https://doi.org/10.1007/s11207-022-02039-9
https://doi.org/10.1007/s11207-022-02039-9
Autor:
David F. Fouhey, Richard E. L. Higgins, Spiro K. Antiochos, Graham Barnes, Marc L. DeRosa, J. Todd Hoeksema, K. D. Leka, Yang Liu, Peter W. Schuck, Tamas I. Gombosi
We investigate the cross-calibration of the Hinode/SOT-SP and SDO/HMI instrument meta-data, specifically the correspondence of the scaling and pointing information. Accurate calibration of these datasets gives the correspondence needed by inter-instr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c98f66c3df36f78771f84528a23a7dd9
Autor:
Richard E. L. Higgins, David F. Fouhey, Spiro K. Antiochos, Graham Barnes, Mark C. M. Cheung, J. Todd Hoeksema, K. D. Leka, Yang Liu, Peter W. Schuck, Tamas I. Gombosi
Both NASA’s Solar Dynamics Observatory (SDO) and the JAXA/NASA Hinode mission include spectropolarimetric instruments designed to measure the photospheric magnetic field. SDO’s Helioseismic and Magnetic Imager (HMI) emphasizes full-disk, high-cad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89421ccb5accc423bac480a96d70dcf3
http://arxiv.org/abs/2108.12421
http://arxiv.org/abs/2108.12421